How to choose soil for cultivating cactus?

Cactus has strong adaptability to soil, and can grow in red soil and loess in the south and calcareous soil and chernozem in the north, especially in sandy loam soil. The soil should have the following conditions: (1) leeward and sunny, with good drainage and water retention; (2) The soil is loose and has good air permeability; (3) Weakly acidic or neutral; (4) Contains a certain amount of humus and organic matter.

For plots that are too sticky, you can mix sand or river sand into the soil, spread evenly on the surface of the ground about 3 5 cm, and then mix well. After deep turning, fully rake fine, rake flat, and then make a bed. It is better to have a north-south orientation of the seedbed, which is not only beautiful, but also conducive to light transmission.

The width of the seedbed is generally about meters, and the width of the bed is about meters. Granular soil is best. At present, the rare cactus varieties planted in China generally use red jade soil and deer swamp soil, which have large particles, excess water can flow away, and have a certain water retention capacity.

Sandy soil, because it does not accumulate water, cacti are succulent plants that are afraid of water.

Optimal soil for growth: Cactus soil requires drainage, good air permeability, and calcareous sandy soil (or sandy loam).

Growth Humidity Requirements: Cactus balls need to create a local environment with high humidity.

Optimal growth temperature: The optimal growth temperature for cactus is 20 25.

Best growth light: Cactus requires full sunlight, but should not be exposed to strong light in summer, and need proper shade. Indoor cultivation can be irradiated with light to make it grow robustly.

Cactus cultivation soil materials:

Natural soil: loam or sandy loam is the best, these two kinds of soil have good aeration, strong water and fertilizer retention ability, soil temperature and fertilizer effect are stable. It can be selected in the vegetable garden and melon field, and the grass roots and leaves can be picked up, heated and disinfected or spread out for exposure, and then sieved off the fine dust for later use.

Humus: It is made by piling up and rotting leaves, bean shells, vegetable leaves, etc. When stacking, you can add meal, cow and sheep manure or poultry manure in layers, and you can't let it rain during the stacking, and you have to turn it several times.

The accumulation should be completed for at least one summer, and after it has been fully decomposed (unformed leaves, bean shells, etc.), it will be sieved and sterilized before being set aside.

Peat or peat: it is a good material because it is clumpy, has a lot of organic matter, has good permeability and water and fertilizer retention ability, and has a light texture.

Sand or coal: River sand should be used for sand, and it should be washed before use. The coal ash is light, keep the soil temperature good, sieve off the fine dust before use, and the unburned black coal ash should not be put in.

Shell powder, eggshell powder or stale ash wall shavings: This is an indispensable calcareous material for the cultivation of many terrestrial types of cacti plants, and shell powder is the most ideal, not fresh lime. Chaff charcoal:

It is unburned but blackened chaff. A small amount of chaff is added to the culture soil to facilitate drainage, loosen the soil, and increase the soil temperature. Bone meal, superphosphate, potassium sulfate:

As a base fertilizer, it is mixed into the culture soil, and the amount is not much, but after being added, it can promote the growth of plants and the flowering is luxuriant.

Soil formula for the cultivation of cactus: 2 parts of soil, 2 parts of humus soil, 2 parts of coarse sand, plus a small amount of calcareous material, suitable for terrestrial cacti and stem succulents. 4 parts of humus, 2 parts of peat, 2 parts of chaff charcoal, plus an appropriate amount of bone meal, suitable for epiphytic type of palm flowers.

3 parts of loam, 2 parts of humus, 1 part of sand and chaff charcoal, plus an appropriate amount of bone meal, suitable for leaf succulents. 2 parts of humus, 1 part of loam soil, 1 part of sand, chaff charcoal, plus an appropriate amount of bone meal, suitable for stem succulents. John Innney No. 2 Culture Soil:

First, 2 parts of loam, 3 parts of peat, and 2 parts of sand are taken according to the volume ratio, and they are fully mixed to form the culture soil, and then add calcareous materials (chalk powder, shell powder, eggshell powder or stale ash wall cuttings) and mixed base fertilizer (according to the weight ratio, bone meal: superphosphate: potassium sulfate = 2:)

2:1).

Fertilizer application:

1. When changing the potting soil for the cactus, a small amount of basal fertilizer should be applied to the bottom of the pot, such as horseshoe slices, bean cakes or sesame sauce residues. During the growth period, the fermented organic fertilizer liquid fertilizer (concentration of 20% is appropriate) is watered every half month, and the fertilizer concentration should not be too large.

2. In spring and summer, the growth of cactus begins, fertilizer is applied once every half month, and it is best to apply nitrogen, phosphorus and potassium mixed fertilizer. In addition, it is necessary to properly shade the sun and never expose it to the scorching sun.

Watering points: 1, the principle of watering is "not dry do not water, rather dry than wet", watering can not water the heart of the cactus, generally in the spring every half a month to water Yong, once a week in summer, and autumn and winter growth slows down, more than 20 days to water once on it, it should be noted that it is best to water the flowers in the rain, if it is tap water, it is best to expose to the sun for two days in use.

2. The watering time is better in the early morning in summer, and it should be carried out in the afternoon in sunny weather in winter, and it can be in the morning and evening in spring and autumn. In general, do not pour water from the top, otherwise there will be unsightly spots on the sphere for a long time. In general, watering must be done sufficiently, for which the soil must be loosened frequently, so that the potting soil can easily and evenly absorb enough water.

3. Summer is the growth period of cactus, with high temperature and high water demand. It must be fully watered, and it should be carried out in the morning and evening when the temperature is low, and it is hot at noon, and watering can easily cause burns to the sphere.

Pruning essentials: Dig out the cactus every year when it is sown in spring, remove the soil on the roots, and then cut off the small roots on the taproot, leaving a few taproots, clean them, place them for a day or two, and then bury them back.

Potting soil replacement: Generally, cacti grow in pots for 2 to 3 years, and the nutrients of the soil will be confirmed, which will also cause the hardening of the culture soil, and it is necessary to change the pot at this time. Pay attention to carefully remove the cactus from the original pot, put some pieces at the bottom of the new pot to facilitate drainage and aeration, and then fill the configured culture soil to 1 3 time.

Compacted by hand, gently put the dug cactus ball (to cut off the rotten old roots and diseased roots) into it, fill it with culture soil around it, lightly lift the cactus ball to facilitate the extension of the root system, and finally fill in the remaining culture soil and compact.

Cacti prefer well-drained, sandy soils.

Potted cactus soil requires drainage, good air permeability, calcareous sand (or sandy loam), can be prepared with 2 parts of sandy loam, 2 parts of humus, 3 parts of coarse sand, and 1 part of limestone gravel or old lime wall chips discarded when the old building is demolished.

It can also be mixed with 2 parts of loam and coarse sand, 1 part of broken bricks, humus and 1 part of old gray wall chips. When cultivating, a small amount of crushed masonry and tiles should be placed at the bottom of the pot to make the drainage smooth.

Cactus prefers high temperature and dry environment, and the room temperature in winter should be kept above 20 during the day and not less than 5 at night. If the temperature is too low, it is easy to cause root rot. In winter, when the temperature in the north is low, watering should be stopped and placed indoors above 5.

Cactus balls require plenty of sunlight, but they cannot be exposed to strong light in the summer and need proper shade. Indoor cultivation can be irradiated with light to make it grow robustly.

Commonly used things are peat, perlite, vermiculite.

There are also cinders, activated carbon, bamboo charcoal, and red jade clay.

Morphological characteristics. Cactus is a perennial succulent herb of the family Cactaceae. The stem is spherical or oval, up to 25 cm high, green, the sphere has several longitudinal ridges, the ridges are densely pricked, yellow-green, the length is different, and it is radial.

The flowers are born in longitudinal spiny bushes, silvery-white or pink, long trumpet-shaped, up to 20 cm long, with scales on the outside of the trumpet, and the scales have long hairs. Cacti bloom in the early morning or late afternoon and last from a few hours to a day. The sphere often bears many small balls on its side, and its shape is beautiful and elegant.

Cacti are dicots that belong to the cactus family in plant taxonomy. There are many species, about 40 varieties, the spherical shape is different, there are stems spherical, oval, longitudinal ridges, radial arrangement; The length and density of the bristles are also different; The colors of the flowers are golden yellow, white, red, etc. In spring and summer, large, long trumpet-shaped flowers bloom from bulbs.

Baby balls can grow on the sphere.

Home growing. 1. Home-grown cacti are generally potted. The cultivation soil is made of 5 parts of humus, 3 parts of sand, 2 parts of sugar ash, if you add a little bone meal, it is better, stir evenly and you can plant.

2. In spring and summer, the growth of cactus begins, fertilizer is applied once every half month, and it is best to apply nitrogen, phosphorus and potassium mixed fertilizer. In addition, it is necessary to properly shade the sun and never expose it to the scorching sun.

3. In winter, the potted cactus should be moved indoors, and the room temperature above 5 can be safely wintered. At this time, the cactus balls of the family potted plants can be placed in an indoor glass jar to keep warm for the winter, or they can be covered with a double-layer plastic bag to keep warm for the winter. In winter, the cactus is in a dormant period, and the potting soil should be relatively dry, otherwise it is easy to rot the roots.

1. The soil for potted cacti requires renting town drainage, good air permeability, and calcareous sand pei soil;

2. It can be mixed with loam, 2 parts of humus, 3 parts of coarse sand, plus limestone gravel or 1 part of the old lime wall chips discarded when the old building is demolished;

3. It can also be mixed with loam, 2 parts of coarse sand, and 1 parts of broken bricks, humus and gray wall chips;

4. When cultivating, a small amount of crushed masonry and tiles should be used at the bottom of the pot to make the drainage smooth.

1. The soil for potted cactus balls requires drainage, good air permeability, and sandy soil containing limestone;

2. It can be mixed with loam, 2 parts of humus, 3 parts of coarse sand, and 1 part of limestone gravel or 1 part of the old lime wall chips discarded when the old building is demolished;

3. It can also be prepared by mixing loam, coarse sand and 2 parts of round and vertical, broken bricks, humus and gray wall chips;

4. When cultivating, a small amount of crushed masonry and tiles should be placed at the bottom of the pot to make the drainage smooth.