What if Oxalis purpurea (Lucky Grass) has no leaves?

(1) temperature: I like a warm and cool climate. What is the optimum temperature for growth? 16? 22 degrees Celsius. It's not cold-resistant. When the temperature is lower than 10℃, the plants stop growing, when the temperature is lower than 5℃, the leaves will suffer from chilling injury, and when the temperature is 0℃, the leaves will wither. However, as long as the bulbs of underground roots are not damaged by freezing, new leaves can still germinate and resume normal growth in April of the following year, and perennial roots can overwinter in the Yangtze River basin. If you want to keep the leaves in a normal state in winter, the temperature should be kept above 5℃. In cold areas, bulbs can be dug out of the sand before winter and replanted in the next spring. Not resistant to high temperature, when the temperature exceeds 35℃, the leaves are easy to curl and turn yellow, grow slowly and go into dormancy. Water should be sprayed on the blades and surrounding environment frequently, and measures such as shading and strengthening ventilation should be taken to reduce the temperature.

(2) illumination: I like full sunshine, and both full sunshine and half sunshine can grow. In spring and autumn, we should fully receive sunlight and avoid too cool environment, otherwise the purple on the leaves will fade to green, and the petiole will become thinner, which will lead to scattered plant shapes, affect the appreciation and reduce the flowering amount. Avoid direct light, 5? Shading should be carried out in September, covering about 50% of the light, otherwise sunburn will occur, resulting in pale and dull leaves, and even curly and scorched leaves. In winter, when the leaves don't fall, you need to give enough sunshine. Plants have strong phototaxis, so when placed on balconies and windowsills, the position of plants should be adjusted frequently to make them receive light evenly.

(3) watering: drought-tolerant, but like to wet the soil. Sufficient water should be supplied during the growth period to keep the basin soil moist, which is beneficial to the rapid growth of plants. When the soil in the basin is dry, the leaves will lose water and sag. But don't water too much, the pot soil is too wet or accumulate water, which will easily lead to mildew of leaves and bulbs. Watering during growth should follow the principle of "no watering, no watering". Deciduous leaves after rain will lead to petiole rot and make plants die in pieces, so it is not suitable as undergrowth ground cover plants or potted under trees. It is easy to get wilt in rainy season, which will cause plants to die in pieces. Pay attention to timely drainage. In summer, when the temperature is high, plants have a short dormancy period. At this time, it is not advisable to invest too much water. Instead of watering, spray should be used to keep the basin soil slightly wet. In winter, when the temperature drops below 10 1C, when the plants stop growing, water should be controlled, which should be dry but not wet to prevent bulbs from rotting.

(4) Environmental humidity: In a humid environment, when the climate is dry during the growth period, water should be sprayed on the plants and the surrounding environment to improve the environmental humidity and make the leaves grow plump and shiny.

(5) Fertilization: I like fertilizer, not barren. Apply sufficient base fertilizer when going to the basin; In the growing season, applying nitrogen, phosphorus and potassium with Hefei 1 time every month will make the plants grow strong, the leaves are thick, wide and colorful, and it is also beneficial to bulb hypertrophy. Avoid applying thick fertilizer, otherwise it will cause fertilizer damage and burn bulbs or roots. Be careful not to simply apply nitrogen fertilizer, otherwise the plants will migrate for a long time and the leaves will turn from purple to green, which will reduce the ornamental value. When applying fertilizer, it is also necessary to avoid splashing fertilizer solution on the leaves, so as not to cause leaf diseases. 7? Stop fertilizing in high temperature period in August and winter.

(6) Pruning: When the leaves grow too vigorously and densely, part of the leaves that are too dense should be removed, and the old leaves that are yellow should be removed at any time, so as to improve ventilation and light transmission conditions, promote plant growth and reduce the occurrence of diseases and insect pests. If the petiole grows too long and the plant shape is not beautiful, you can cut the leaves again and let them grow new leaves again.

(7) Turnover: Due to the rapid growth, it should be turned 1 time every spring. I like neutral or slightly acidic sandy soil rich in humus, loose and fertile, and well drained, and avoid clay. The matrix can be made of humus soil, garden soil, peat soil, perlite and stone. When putting or turning pots, put more drainage layers at the bottom of pots to facilitate drainage and prevent bulbs from rotting due to poor drainage.

(8) Pest control: there are leaf spot, gray mold, root rot, spider, aphid, snail and other pests and diseases.