1, culture soil selection.
Cactus likes slightly alkaline fertile sandy soil with good drainage. The culture soil for home cultivation of cactus can be mixed with 2 parts fertilizer, 4 parts garden soil and 4 parts river sand.
2, flower pot selection.
The flowerpot should be small, but not large. Generally, as long as it is slightly larger than the plant, some small tiles can be placed at the bottom of the second pot to facilitate drainage. Don't bury it too deep when planting, just stand firm. ?
3. Ventilation and sunshade.
Cactus can promote plant growth in the sun, so we should see more sunshine, but shade it in midsummer to prevent sunburn caused by direct strong light. Opuntia dillenii, which has been stored in an unventilated place for a long time, is easily harmed by red spiders in dry and hot seasons, showing an aging yellow-brown color, which affects its growth and ornamental value.
In order to avoid the above phenomenon, it should be placed in a well-ventilated place. In addition, cactus is easy to be frostbitten when the temperature is lower than 5℃, so it should be protected from freezing injury in winter. ?
4. Water and fertilize.
Cactus is drought-tolerant, so watering should be less than much, and water should not be accumulated in the basin, so it can be kept semi-wet. June to August is the season when cactus grows vigorously. To promote its rapid growth, it is generally watered once a day. To keep the soil moist, pay attention to drainage in rainy season, and do not water it in dormant period.
Do not water the stems with fuzz or white powder and grafting parts. Fertilization is in the vigorous growth season, but it is advisable to use completely decomposed organic fertilizer or slag fertilizer for fertilization. ?
5. Change the basin.
The root system of cactus flowers is developed, growing and aging, and it also excretes an organic acid that acidifies the soil. It is necessary to change pots and add new culture soil once or twice a year. The time for changing pots should be in the dormant period, and pots can be changed in early spring or autumn 10. When changing pots, the old roots of plants should be cut off, and the long roots should be cut short to promote new roots.
Opuntia stricta (haw.) haw. var. dillenii (ker-gavl.) Benson is a kind of cactus. Alias fairy palm, Guanyin palm, overlord, fire palm, etc., are cactus plants. Cactus is a tufted succulent shrub with broad obovate, obovate oval or nearly round upper branches. Flowers radial, receptacle obovate; Most of the seeds are oblate, with slightly irregular edges, hairless and yellowish brown.
Cactus likes strong light, is resistant to heat, drought and barren, and has tenacious vitality. The suitable temperature for growth is 20-30℃. It is mainly distributed in the arid areas of tropical and subtropical areas such as the southern and southeastern coastal areas of the United States, the West Indies, Bermuda and northern South America, southern China and Southeast Asia.
There are many kinds of cactus. There are 70- 1 10 genera and more than 2,000 species in the world, which can be divided into: round fan cactus, segment cactus, crab claw cactus (crab orchid), leaf forest cactus and spherical cactus. Often growing in dry environment such as desert, it is called "desert hero flower" and is a kind of succulent plant.
References:
Cactus-Baidu Encyclopedia