Articles in Tags plant flower gardening

How to prevent frozen frozen winter

1. Temperature Guide

In winter, the most important thing for succulent is the temperature. Master it well. Succulent plants can not only overwinter, but also become obese.

First of all, the flower friends should pay attention to the Outdoor temperature below 5 C, and take the succulent into the indoor or balcony; when the Outdoor temperature of the large area is lower than 10 C, the lotus palm, silver wave brocade, black mage, Xiong Tongzi, etc.Succulent plants should be quickly returned to the room.

In addition, the minimum temperature of the indoor environment is higher than 0 C, and the flesh can be safe to pass the winter; if the minimum temperature can be kept above 10 C, the Succulent plants will grow normally, and the flower buds can still add a little diluted organic nutrients that are diluted 500 times when they can dilute the organic nutrition of 500 times.Liquid is poured in fleshy to improve cold resistance.

Master these points to make your Succulent plants go smoothly!

Watering Guide

In winter, watering for succulents is the key to the state of succulent. If it is a relatively small succulent seedlings, then there will be more moisture it. It can be frequently watered to keep the soil a certain humidity.And try to put them in a warmer place, grow in a more stable environment.And the large Succulent plants will have much stronger resistance. Watering must be less, and it is not a problem to water or even a drop of water for a month.

Master these points to make your Succulent plants go smoothly!

Third, water spray guide

In addition to normal watering, it is important to spray water appropriately according to the weather.Because winter is also the most beautiful when Succulent plants need to seize this opportunity.It is generally recommended to spray water in the fleshy when it is sunny. After entering the winter, keep the air a certain humidity. With the temperature difference, the fleshy color will be faster.

Master these points to make your Succulent plants go smoothly!

Fourth, light guide

Light is too important for winter meat. As long as the flower friends have sunlight, they can take a few hours for a few hours.Even if you take the fleshy all day in winter, as long as there is the sun, it is okay.You will find that the fleshy of the sun is called a beautiful color.

Master these points to make your Succulent plants go smoothly!

Five, fertilization guide

In winter, many fleshy plants do not need to fertilize, but for the "winter species" and "intermediate species" that are still growing, they need to supplement certain liquid Fertilizer. flowers can use the organic nutrients fermented by pure plants at noon, the organic nutrition fermented with pure plants fermented with pure plants fermented.The liquid is 500 times the water, and the flesh is poured to supplement the nutrition to the succulent to grow obese.

1. Burning pot

The plain pot is a mud tile pot. It is the most commonly used plant container. It can be divided into two types: red and gray pots.There are various specifications, the smallest diameter is about 10 cm, generally 14_33 cm, and the larger is 39 59 cm.The water and exhaust drainage performance of the plain pot is good, which is conducive to plant growth. It is widely used in the cultivation of seedlings and the cultivation of seedlings.This kind of Flower pot is not enough. It is rough. When cultivating finished seedlings, you should try to use a small pot as much as possible so that you can place it in a slightly larger pot when displaying decoration indoors to make up for the shortcomings.

2. Zisha pot

Various flowers and plants are engraved on the purple sand basin, with a variety of styles, harmonious colors, simple and elegant, and antique beauty. It is more suitable for small leaf species for small leaf species on the indoor countertop.The disadvantage of this basin is that the water permeability of the water is slightly worse, and the appropriate species must be selected when used.

3. Plastic basin

Plastic pots are one of the commonly used plant containers for indoor leaf -viewing plants. They can be divided into hard plastic pots and soft -holding plastic basins.Hard plastic basins are generally small in size, light and beautiful, colorful, and are mostly used for viewing and cultivation, but their ventilation is poor and not conducive to growth. Therefore, it is not suitable for long -term planting.It is only used, and it must be loose, ventilated and drained multi -porous substrates with good ventilation and drainage performance.The soft plastic basin is only used for the nursery of indoor leaf -viewing plants, and is generally not used for ornamental cultivation.Can plastic Flower pots raise flowers & gt; & gt;

4, glaze basin

The glaze pot is strong and gorgeous, but the drainage ventilation performance is poor.It is often used as a pelvan, which can also be used directly to cultivate large leaf -viewing plants, but it must be equipped with loose porosity matrix, otherwise the plant growth is poor.

5. Wooden basin

The wooden basin is used to cultivate large leaf -viewing plants and can also be used to cultivate some fleshy.Its specifications can be determined according to actual needs.This kind of inside and outside of the pot can paint different colors to improve the service life and coordinate with the color of the plant.It has a light scenery, good breathability, strong water and Fertilizer, low cost, and low cost. It is suitable for planting of various flowers. In addition, it can also be determined and processed according to the shape, size and cultivation of flowers according to the shape, size and cultivation of flowers.This pot is easily rotted by the erosion of water, Fertilizer, and microorganisms, and has a short service life.

6. Cement basin

Cement Flower pot is usedCementPlaced it.It is simple, with different shapes, and moderate weight, but it is suitable for garden and balcony greening.

7. glass basin

The glass flower is not breathable and cannot be watered.The glass is transparent and you can see the internal moisture.In summer, the glass flower must be placed in a cool place.Put the water layer with a glass flower, you can use pottery grains or large light stones. This individual is casual.The glass flower is suitable for leaf insertion.

8.Porcelain basin

Porcelain pots are fired with porcelain soil, which is the best in the ceramic basin.It is bright in color, beautiful in appearance, and many varieties of color, but it has poor breathability and water seepage. It is difficult to master the wet and wetness of the pot soil with this pot.It is best not to plant flowers directly, only suitable for flowers for flowers.

precautions

In addition, there are all kinds of materials for decorative materials, such as glass tanks, vine products, stainless steel clads, etc. This type of pot is beautiful and generous, which can add a gorgeous and colorful atmosphere.But for display, not cultivation.

[rice species germination] Points of rice seeds soaking germination technology point Points of rice seeds precautions precautions

The main points of rice seed soaking germination technology

rice seeds need to be exposed to planting for 2-3 days before soaking to improve the germination and germination rate of seeds.However, it is not advisable to grow on the cement floor and slate.When soaking, seed disinfection should be performed, and then soaking.rice seeds are soaked in water soaking. If you really need to be soaked in static water, you must be squeezed or changed at least twice a day.Generally, early rice is soaked for more than 48 hours, and medium and late rice must be soaked for more than 36 hours.

After soaking, the buds are mainly grasped, mainly at high temperature (35 C -38 C) breaking the chest, the temperature (25 C -30 C) long buds, low temperature (normal temperature) dry buds to practice buds.The temperature and water of the valley species are adjusted in the method of leaching temperature and covered with closed coverage, and the temperature and humidity are uniform in the inside and outside of the valley piles in the piles, which makes the buds and roots be consistent.The criteria for germination are half a grain of buds and a grain of root.

1,Expose

Select the seeds one week before the routine rice seeds soaking6 to 8 hours, then put the sun -exposed seeds in a dry and cool place to cool the heart to promote the breathing effect and enzyme activity of the seeds, which is conducive to improving the seed germination rate and germination potential;Bacteries attached to the rice shell.However, do not expose the hybrid rice seeds before soaking. After the exposure is seeding, the germination rate is generally reduced by 5%to 10%. The negative impact on the seeds with weak living power is greater.

2,Seeding

Select the seeds with water, remove the floating on the surface, and choose a full rice seeds to cultivate neat and strong seedlings.

3,Promote living water soaking

It is not easy for the planting time, it is best to useThe method of "daily immersion and night dew" is to soak the seeds during the day and remove it at night. It is best to put the seeds in the flowing water for 6 hours when soaking (if there is no flowing water for about 4-6 hours, it will be changed once every 4-6 hours).To eliminate the direct soaking of the old (old) for 48 hours.

Adopting intermittent soaking methods: the best time for conventional early rice soaking33-35 hours, more than 48 hours are not conducive to seed buds and germination rates.(The specific soaking time depends on the temperature and water temperature, and the seeds are used to suck water.seeds have suck water).Miscellaneous early rice should be used to decline, intermittently immersion method, and avoid continuous soaking for a long time.The process of rice soaking in rice is the water absorption process of the seeds. After the seed absorption, the activity of the seed enzymes begins to rise. Under the action of enzyme activity, the embryo starch is gradually dissolved into sugar, releasing the nutrients required for embryo roots, germ and embryo axis.When the rice seeds absorb water to the valley weighing 24%, the embryo begins to spare, saying that it is broken or dew.When the seed absorption reaches 40%, the seeds can germinate normally. At this time, the water absorption is the saturated water absorption of the seeds.When the amount of water absorption is reached, on the one hand, due to the water temperature of the soaking, the higher the temperature within a certain temperature range. The faster the seed absorption, the shorter the water absorption time.On the other hand, it is affected by rice varieties and combination types.Due to the strong activity of hybrid rice water absorption, the soaking time of hybrid rice seeds is shorter than the soaking time of conventional rice seeds.

4,Promote pharmaceutical soaking

It is recommended to use potion soaking, except for coating seeds.Water soakingAfter 6 hours, the bacterial spores attached to the seeds moved, and then the pharmaceutical sterilization was performed.At present, the commonly used potions are 25%fresher 2000-3000 times liquid (that is, 5 kg of 2ml of water, 4-5 kg of planting 4-5 kg) for 6 hours.Or use 500 times strong chlorine essence (2 grams of strong chlorine essence and 1 kg of water) for 6-8 hours, the disinfection solution should be higher than the surface of the seeds (do not change the water during disinfection), and then repeatedly rinse the rice seeds with water repeatedly.Rinse the residue solution.

5.Sprout

At present, many farmers like to put seeds in woven Bags to germinate, and even because the temperature cannot come, the seeds are exposed to the sun, which often causes burning buds.The best and easiest way is to use double -layer, disease -free, and moist sacks to germinate, put a layer of diseaseless straw on the ground, spread a sacks, spread the seeds evenly, and cover the other sack on it.Just pay attention to whether to add water.You can also put a sack or a relatively ventilated woven bag, and you can use straw to keep the insulation.After the valley species is heating, the control temperature is in35-38 C, the temperature should be piled up with too high temperature, and measures should be taken to improve the pile temperature.After about 20 hours, the grain can be exposed.The temperature is normal in mid -to -late May, and the daily immersion and night exposure method can be used to germinate normally without the need to add insulation materials.

6.Refining

Before sowing, spread out the germination of germination at room temperature to refine the budsSowing after 3 to 6 hours.Make valley species adapt to air temperature and improve the seedling rate.

7.Sow

After the grain species is dew, the temperature is adjusted toFrom 25 to 30 C, the temperature can be promoted to the roots. When the buds are half a grain of valley and 1 grain of the roots, the lower fields can be sown.

precautions for rice seed germination

1,Flip it every day when germination1-2 times, the temperature of the seeds is uniform, the temperature of the upper and lower, the temperature is uniform, and the germination is neat.

2,When germination, you must pay attention to temperature changes, prevent and control high temperature burning, exceed40 C seeds lose their germination.

3,seed85%broke the chest, reduced the temperature to 25 C, the buds and root length were controlled within 2 mm, and the plant was spread out.

4,After breaking the chest, proper water replenishment, pay attention to the ventilation and oxygen, you can urge the strong bud.

5.According to their respective production plans, the germination, sowing in a timely manner, and controlling the seedling age in3.5 Leaf age, prevent small seedlings in the early stage, and insert large seedlings in the later stage.

How to raise potted plum blossoms

1. Select pot & amp; change pots

Potted plums are commonly used in pots with a diameter of 20-25 cm.After the Potted flowers, the pot is replaced. The pot is changed to remove the plum pile on a sunny day to remove the soil, cut off the long roots, dry roots, and rotten roots.

2. Soil selection

Plum potted plants can be mixed with fertile garden soil, corrupt leaf soil and coarse sand mixed soil, plus a small amount of Bone powder.

2. Change the pot and change the soil

Potted plum blossoms need to be turned over for two to three years. The soil can maintain soil fertility, which is conducive to the growth of plums.When changing the pot soil, you need to change a larger container for maintenance. Do not harm the root of the plant. The soil changing can be mixed with rural soil and rot leaf soil according to a certain proportion, which can promote flowering.

3. Reasonable watering

plum blossoms like to grow in warm and humid soils. Watering frequently should be frequently. spring and autumn can be watered every two to three days. The temperature in summer is relatively high. The steaming effect will cause too much water loss.Once, when the temperature is too high, it is necessary to spray water to cool down, and wait for the soil to dry in winter before pouring.

4. Reasonable fertilization

Plums require sufficient nutrients, but each fertilization should not be too much, otherwise the root system will be burned. When the growth is strong, they need to be pursued every half a month.Organic fertilizer can make plum blossoms waiting for sufficient nutrients, and the flowering period can promote plum blossoms.

5. Reasonable trimming

Plum Flower pot plants need to be trimmed frequently to control the size of the plant. If there are branches that grow too high during trimming, we must topical and avoid the high plant type., Avoid nutrients, can also make the space structure reasonable, increase light transmission, and make plum blossoms more branches.When each branch grows to 25 cm, the top part can be removed. It can be trimmed at least once a year. You can also cut the cliff, dry type, and so on through your own hobbies.

Plum bonsai Style

1.

1. Dry type: The bonsai trunk is irregularly bent. Do not bend too large or symmetrical. The purpose of pursuing nature is the purpose.

2, oblique drying type: sparse shadow oblique side, plum blossom oblique dry type.The tilted and dry plum bonsai is easy to make, as long as it is placed when planting.

3. Lie dry type: thin branches and jade leaves, plum blossom trunks are close to the pot surface, heading on the head, looking back, elegant and beautiful, beautiful attitude.

4. Cliff type: Cliff -shaped plum bonsai, when cultivating small trees, press down the trunk, put into the basin and make a cliff shape.The cliff -like plum bonsai has an elegant charm and is loved by ancient and modern people.

5. Dynamic branches: Generally made from Zhenmei plum blossoms.Its branches are naturally drooping and elegant.The plum blossoms can be obtained through ordinary plum blossoms.Making bonsai with plum branches can be supplemented by Panzha, which increases its drooping range to make it more elegant.

PS: The dryness of the plum bonsai can be achieved by cutting and leather with knife.When carving or tilting Skin, it is not suitable for completing the entire trunk at one time.It should be operated on one side from top to bottom to keep the trunk upward water transmission line.The operation line can be changed, such as spiral or entanglement.After the wound scars, do the same on the other side.If you feel that the vicissitudes are not enough, you can repeat the operation many times.

Two, root

The roots of the tree should be sagged from the root and wrapped with each other.Lugen can show the ancient elegance and fragrance of plum trees in various forms.The lust -rooted plums are mainly hung on the surface of the Flower pot like an eagle claw.When the plum pile is placed on the pot, it can only be formed by tied its parallel root into an inclined form and cultivate them.

Three, branches

The shape of plum bonsai branches mainly depends on pruning.plum blossom pruning is mainly performed after the flowers are withered.The trimming is mainly done by cutting, sparse branches, contraction, buds, and heartbroken.

1. Trip: It is part of the penetration of the potted plum blossoms in one year.Generally speaking, the new plum branches are cut lightly.For adult branches, it should be briefly short.Depending on the shape of the shape, the length of the branches to be retained and the budding direction should be kept.The short part is 1/3 of the cuts, and the shorter part is 2/3 of the cut branch.

2. Comb branches

Mainly cut off the dense branches.First, the dead branches, pest branches, cross branches and overlapping branches are cleaned up.increase plant ventilation and light transmission, and promote their healthy growth.

3. contraction

Generally speaking, branches of more than 2 years have been cut short to achieve younger.This pruning method is widely used in plum pruning technology, and it is also an important measure for plant shapes and trees.The trimming time is generally selected in the late spring and early summer.

4, scratch bud

This is well understood. Wipe off the new roots, dry buds, and axillary buds in time. At the same time, pay attention to retaining the direction of the buds to prevent the new sprouts from germinating cross branches, raw branches, overlapping branches and branches, which affects the beauty of plum bonsai.

5. Tool

The main purpose is to inhibit the growth and shortening of the side branch.When the bonsai grows 2-4 new leaves, the time of control is controlled.Stepping plum blossoms can stimulate the side branches to sprout and increase flowering.

planting method of Artificial lawn

one,Sowing method

Most lawn can be sowed or sowed in spring or sowing seedlings in late autumn.When a lawn is established in large areas, sowing machines can be sowed, and small area sowing is used in small areas.After sowing, use a rake to rake each other, and then suppress it with a wooden cricket.After the granular seeds are planted, the straw should be covered.The sowing method requires skilled sowing technology to ensure uniform planting.In addition, management is more expensive.

Second, paving method

Although this method can quickly build a lawn, the process is too complex and the investment is large.

three,Stem

Forcetic straw species, such as Dogs, Carpet grass, fine leaves, creek cuts, bull grass, etc., can be reproduced with stems.It is best to do it when the grass Skin is germinated in early spring, or it can be carried out in the rainy season.First cut the stubs from the lawn floor and cut it on the shade of the shade5--8In a small section of centimeters, there must be a section on each paragraph, otherwise the new root cannot be germinated.Then broadcast or sprinkle.

Broadcasting: In a flat location, open shallow grooves with a small pick, pour foot water, and use the water to seep2-- 3The strip is a bouquet of the ditch, and the soil is covered on it1Centimeter, line spacing20Cm, spray water every day in the future1Second, after the new bud is unearthed, spray water.

Sprinkle: first pour the ground through the water through the water, seep the water, and then sprinkle the cut stems on the soil surface and cover it up.1Cm thick thin soil.

Four,Roots

This method is suitable for plants without stems and most of the grass species, such as sheep -bearded grass, velvet, etc.Time is best in early spring or rainy season.Shake off the soil after placing the root of the densely dense place, remove the weeds, cut off part of the whisker, so as to2-- 3The seedlings are a pinch, tear it open, and then planted or planted according to a certain plant distance.Follow the soil, cover the thickness of the soil2It is advisable to be about centimeters.Gently compacted after covering the soil, and fully irrigated.Before the new leaf germination, spray water every day1-- 2Second, to prevent the soil plate and crack.

Under normal circumstances, the method of planting turf is simple and easy to save funds.

What is the planting step of Artificial lawn

Step 1: finely neatly

The lawn has high requirements for soil conditions, and the land is required to be very flat before laying.

1Filling back to the soil is full and slightly higher than the design elevation. Generally, the height difference is3~5Within centimeters.

2, clean up the venue30cmAll small stones and other objects within the depth.

3If the grass design with terrain, be sure to ensure Smooth and full terrain.

Step 2: Soil improvement (sand spreads)

1, Sprinkle suction and humus soil, river sand, etc. to improve the soil

2, Roll the soil behind the river and sand with the wooden strips

In order to ensure the follow -up growth of the lawn, you can also sprinkle some compound Fertilizers appropriately. At the same time, the bottom Fertilizer should be applied to the entire land. Conditional regions can be applied to rotten Organic fertilizer, and chemical Fertilizers can be used.5Grace, potassium chlorine5gram

Step 3: Lawstins

1Before planting, the soil layer will be flattened

2When planting, it should be used to keep the lines, keep the lawn's flat, tidy, and uniform

Note that there are no gaps in the garbri babes. Generally, the specifications that are best selected are300*300mm

Step 4: crushing

1Generally, three crushing is required to ensure that the sand soil layer is fully contact with the turf

2There are many ways to crush: If the area of the turf is large, the drum can be used. If the area is average, it can make a roller, and the manpower can be pulled.If it is sporadic grassland, you can make the workers try hard with iron.

Step 5: Watering

1If there are large grasslands such as parks and golf grasslands, the automatic spray irrigation system is generally installed. Just open it immediately after the grass laid laid laid.

2If artificially irrigation, be sure to pay attention to the first watering, and consider the settlement of the soil, sand, and turf with sand.

Step 6: Daily Pruning

Generally, the grasslands just paved do not need to be grass, because after crushing and watering, the grass is tight.Need to pass10Began to get grass around the sky.If you encounter sporadic weeds, you need to clean up in time.

Step 7: Makes insulation measures

In winter to promote the germination of the lawn, the lawn can be used to keep the lawn with non -woven fabric (breathable insulation).The film is used to keep the insulation without good breathability, and it should be removed regularly.

How to plant a beautiful lawn for lawn seeds

First, clean up all weeds in the planting area, previous grass, and other debris.

The chemical treatment method is: spray glyphosate to kill all plants in the area (if necessary).These toxins (glyphosate) may have a long -lasting effect on the soil.Properly flip the soil, so that the soil and weeds can be loose, which is conducive to collecting these weeds.If you have time, you can let the land idle for a week and water the land appropriately.This is a good way, because after this time, the weeds under the ground unearthed, so that you can remove them before planting the lawn.

Second, let the soil fully contact the air and soften it.

You can use hoe, plow or shovel to turn the soil. What tools are used depending on the size of the land.Before planting the lawn, you can pile up the soil (so that the soil can be improved).

three,Since the weeds on this land have been cleared and the soil has been turned over, the next thing to do is to make appropriate grades.

This can ensure that there is a certain small slope between the lawn and the infrastructure of the house, at least every10foot(3Mi) Reserve1inch(2.5The height of cm).

Fourth, when turning the soil, a large amount of weed seeds will be turned to the surface of the soil, and these seeds will germinate and compete with the newly planted grass.

Watering the soil before sowing (weekly1-2Times), and then spray the pesticide again, remove all weeds, so that no other plants will compete with new grass.

Fifth, apply small seedlings and sprinkle lime.

Fertilize the grass according to the guidance (control ratio) on the Fertilizer packaging.It may be a good way to use the Fertilizer, because it can ensure the accuracy of fertilization.Lime is prepared for acidic soil (acidic soil is widely distributed in the northeast region).Especially when there is an evergreen tree or shrub in the planting area, you can conclude that these soils are acidic soil.If you really want to determine the nature of the soil, you can get the soil sample to the local cooperative office to test it.If you have improved the soil and the soil is good, then you don't need to sprinkle import Fertilizer.

6. Type the soil as much as possible.

planting lawns on soft soil is not a good idea.You can use hand ramming or other things to rectify the soil. What tools are used depends on the size of the land area.If you fall down a lot of soil, then you are better to layered them and fight them.actually,13-15The soil with deep centimeters is not thick.If you want your lawn to grow all year round, then you must pay attention to these things.When rammed soil, using water rollers is not a good way. If necessary, it is best to use the rammer.

Seven, the surface of the land needs to be rough.

Use the dumplings to make the soil surface slightly rough.You need to leave some gaps to take root.

Eight, sowing.

Use an appropriate seeding machine and sow according to the proposed proportion prompting on the seed packaging bag.It's not good to sow too many seedsThe this will not make the lawn grow faster. On the contrary, this will cause the lawn to be crowded, which will cause the grass to suffocate and die.

Nine, make sure the seeds and soil are fully contact.

At this time, you can use water rollers to stuff the seeds into the hole (loose place) of the soil surface.Or, you can also use garden .Don't worry that most seeds will be exposed to the air because it is a good thing.

Ten, sprinkle peat soil or Fertilizer.

The peat soil or Fertilizer can be used as the protective layer of the seeds, and the other is to be used as a cover.If you want to spread a thin layer of coverage for the seeds, then use some container to make these things.You only need to bury the seeds into the soil until you can't see them.Too much peat soil will not hurt the seeds, but this is a waste.You only need to sprinkle a thin layer (until you can't see the soil).This step is very time -consuming, but this is very important.The coverage can play an important role in maintaining soil moisture. Do not water all the times a day (if you are lucky, you can once a day).If you don't buy toxic Fertilizers, fertilization can improve the soil, so that the soil becomes fertile.

Eleven, watering.

When watering for the first time, be sure to pour it thoroughly (ensuring that each area can be poured), which is very important.But don't pour too much water (don't make the floods).You have to water constantly, a small amount.After dampness (contact with water), the peat soil will show dark brown.The most important thing is not to leave any stagnant water.At the same time, the peat soil and soil must be fully absorbed, that is, at the beginning, you have to pour sufficient water.

12. Make sure to keep watering in the planting area.

Another advantage of peat soil is that through the color changes of peat soil, you can easily know when you need to water.When the peat soil becomes dry, its color will become light brown again, so you can knowIt is water.After watering, the peat soil will become wet, and its color will become dark brown.Ideally, the color of peat soil should always be dark brown (in other words, peat soil is wet).But the more practical approach is to pour water once before going to work, and then pour the water once after going home from get off work.If the peat soil does not dry, then you don't have to rush to water!Anyway, the color of peat soil is the signal indicator of watering.

13. Don't postpone the time of pruning the lawn for the first time.

The delayed trimming lawn will cause greater damage to the lawn.Once the new lawn reaches a trimming height or slightly exceeds this height, then you have to perform the first pruning.Generally speaking, the trimming height is probably6arrive8inch(15-20centimeter).Perhaps, when the first trimming time comes, your lawn still looks fragile.But the appearance is deceived.Just start your grass cutting machine on the lawn, don't worry about it crushing your lawn, because the grass is very flexible!If you let the lawn grow too long, then when you trim, they will be pressed down, and then the grass is cut off.So don't be afraid, as long as the grass is long enough, you have to risk cutting it off.