Cactus has strong drought tolerance, so its management is very simple.
Cactus has the characteristics of drought resistance, simple management, beautiful appearance and air purification.
Therefore, it has become a common ornamental plant in families and offices.
Now let’s learn about the cultivation methods and precautions of cactus.
Breeding method of cactus
1. Ground planting
Under normal conditions, the best cutting time is from May to June.
If there is a greenhouse, cutting can be carried out all year round.
(2) Ear picking
We should select robust and mature stem nodes from the mother plant with strong growth potential and no diseases and pests as cuttings.
We can cut cuttings from the mother plant with a rust free scraper.
Before and after each cutting, we should wipe and disinfect the knife with alcohol.
Cuttings after cutting should not be cut immediately.
We should air it in the room for 5 to 7 days.
After the incision dried up and the stem meat began to shrink, we cut again.
When we bury the base of the cuttings into the substrate, we should not be too deep, otherwise it will cause decay.
At this time, the cuttings are difficult to stand upright (because they have become soft after drying), so we can lay them flat on the substrate.
We can also use a small wooden stick to support, and then gently press the soil on both sides of the cuttings with both hands to make it close to the soil.
(1) Basin selection
The specification of the basin is 30cm ~ 50cm in diameter and 35cm ~ 55cm in height.
Cactus flower roots absorb best when the surface of the basin soil is relatively dry, but the interior of the basin soil is still wet.
The mud basin has good air permeability and drainage.
In summer, the root system of the basin is too dry or too close to the wall, but the temperature is often too high.
Purple sand basin has good air permeability.
It is the best choice for planting such plants.
We can use 5 parts of loam soil, 3 parts of peat soil or rotten leaf soil, 2 parts of coarse sand, and add a little hydrated lime or old wall debris ash.
The soil configured in this way is calcareous sand or sandy loam with good drainage and air permeability.
After the culture soil is prepared, we spray 400 ~ 500ml of 50 times solution of 40% formaldehyde per cubic meter.
We should sprinkle it on the culture soil 10 ~ 20 days before planting, turn and mix it evenly, and cover it with plastic film.
One week before planting, we opened the film and planted it after the smell of the medicine dissipated.
(3) Upper basin
We transplanted the treated cactus into the pot.
We spread nutrient soil around cactus and left half of cactus on top.
When we plant a new layer of gauze at the bottom of the pot, we should plant a new layer of gauze to prevent insect damage.
Then we covered the gauze with tiles and other things to facilitate drainage.
The basin soil shall be added 2 ~ 3cm away from the basin mouth to facilitate watering in the future.
As the soil is moist, we don’t have to water it immediately after planting.
After 7 ~ 10 days, we can pour water once.
The planted plants should be maintained in a place with bright light and no direct sunlight.
After about 10 days, it germinated new roots.
Then we pour water again and restore normal management.
3. Maintenance skills
Cactus likes a sunny environment, but exposure to the sun will slow down the growth rate of cactus.
Of course, cactus won’t be killed by the sun.
But if you want cactus to grow faster, you’d better find a shade for the cactus when the sun is too hot.
The optimum growth temperature of most cactus is 20-35 ℃.
The vast majority of species prefer a large temperature difference between day and night.
When the daytime temperature is within 35 ℃ and the nighttime temperature is about 15 ℃, it is conducive to the manufacture and accumulation of organic matter.
This can promote the vigorous growth of plants.
Cactus should not be watered more.
Cactus flowers are mostly native to the hot and arid desert wilderness of South and North America.
Cactus’ root system has strong water absorption capacity. If you water too much, it will make the root fester.
And some large cactus will not die even if they are not watered for a year or two.
Our fertilization is mainly phosphate fertilizer.
Moreover, we should not apply too much fertilizer at one time, otherwise the concentration of soil solution will be greater than that of cactus root cells.
This will drain the water from the youngest son, resulting in the dehydration of cactus.
Cactus is native to desert areas.
There is good ventilation and fresh air.
Therefore, in the hot weather in midsummer, we should do a good job in the ventilation and cooling of cultivation sites.
The cultivation greenhouse should be in the air circulation environment, and set more windows, skylights and other vents.
This is conducive to ventilation in hot weather.
If necessary, we can also install equipment such as exhaust fan, hair dryer or electric fan to enhance the air circulation effect of the environment.
This can promote the safety of cactus flowers in summer.
(6) Pest control
The bacteria that harm cactus include bacteria and fungi, but the problem is not very serious.
As long as we improve the cultivation conditions, take appropriate management measures, and prevent and eliminate diseases and pests at the same time, it is easy to obtain good results.
(7) Change Basin
We should stop watering 3 ~ 5 days before changing pots.
When changing the pot, we first buckle the plants out of the pot and shake the soil at the root.
Old roots, rotten roots and semi withered roots have to be cut off.
But we should be careful not to cut off the main root, the so-called radish root.
For healthy roots, we can leave only 3 ~ 4cm long.
We should put the plants after root cutting in a cool and ventilated place to air for 5 ~ 6 days and replant them.
In this way, the hair root will be fast and good.
Precautions for cactus
1. Pay attention to the light
Cactus is sensitive to strong sunlight.
In the direct sunlight in midsummer, cactus seedlings or stems and leaves will be burned, and in serious cases, it will lead to local wilting or even decay.
At noon, we should properly shade and prevent direct sunlight.
In winter, we should let cactus fully receive light.
If the indoor light is insufficient, we can use artificial lighting at night to make the stems and leaves green and pure color.
2. Pay attention to watering
If cactus is seriously short of water or water supply for a long time, it will not die, but it can lead to its growth stop or poor growth, stem shrinkage and semi dead state.
3. Pay attention to fertilization
Cactus after transplantation or dormancy in winter should not be fertilized to avoid root rot.
We should not fertilize it when the temperature is low or too high and during dormancy.