The latest culture method of purple back taro

Purple back arrowroot, also known as red back lying arrowroot, red back Xiao arrowroot, red back Ge Curcuma, etc., is a perennial herb belonging to arrowroot family. Its plant type is beautiful, its leaf color is colorful, and it has strong shade resistance. It is often used for indoor potted plant viewing. Large varieties can be used to decorate the halls of hotels and shopping malls. Small varieties can decorate the balcony, living room, bedroom, etc. of the room. Let's take a look at the cultivation method of purple back arrowroot together.

Growth Habits of Purple Back arrowroot

Purple back arrowroot originated in Central America and Brazil, and cultivated in southern provinces of China. Likes warm, humid, shady environment. It grows at 20~30℃, needs more water and is not resistant to drought. It is more heat-resistant, slightly cold-resistant, and safe for winter above 5℃. Fear of frost, like loose, fertile, moist and well-drained acid soil.

Propagation method of purple back arrowroot

1, ramets: purple back arrowroot generally used ramets propagation, spring temperature around 20℃ reproduction is ideal, but as long as the temperature, humidity is appropriate, can also be carried out throughout the year. During propagation, cut the root block with stem leaves or leaf buds with a sharp knife. For a small amount of propagation, the cut root block with stem leaves and leaf buds can be directly placed in a mud pot. For mass propagation, it should be placed on the seedbed. When the temperature and humidity do not meet the requirements, the film should be covered. The temperature in the film must reach 20~28℃ and the humidity is above 80%.

2. Cutting: Purple back arrowroot is generally cut with top tender shoots. The cuttings are 10~15 cm long. Depending on the size of the leaves, one third or one half of the leaves are reserved. The cuttings are treated with 500ppm of acetic acid for 2~3 seconds. They can also be treated with indoleacetic acid, indolebutyric acid and ABT rooting powder. After cutting treatment, it should be inserted into seedbed, with plant spacing of 5×10 cm. Usually, 30~50 cuttings have natural roots, but the survival rate of cuttings is not as high as that of ramets, generally about 50%.

Cultivation method of purple arrowroot

1, soil: purple back arrowroot cultivation soil requirements fertile, loose and good drainage, avoid soil hardening and ponding, multi-use fertile humus soil and porous coarse medium as matrix. Generally, it is mixed with rotten leaf soil and peat soil in equal amount. It can also be mixed with pond mud, peat and pearlite in a ratio of 2:3:1, or with loose rotten leaf soil rich in organic matter plus 1/3 pearlite and a small amount of base fertilizer.

2, watering: purple back arrowroot is not resistant to drought, the growing season must be given sufficient moisture, keep the pot soil often moist, and pay attention to spraying water on the leaves, especially in summer and autumn when the temperature is higher, the air is dry, but also often spray water on the leaves and around to maintain a higher air humidity. However, attention should be paid not to make the basin soil ponding, so as not to affect the root ventilation, resulting in poor growth or rotten roots, after the end of autumn temperature is low, to control the watering amount, keep the basin soil slightly wet.

3. Temperature: Purple back arrowroot originated in tropical and subtropical areas, likes high temperature, wet and semi-overcast environment, suitable growth temperature is 20~30℃, the best growth temperature during the day is 18~21℃, night 16~18℃, safe winter temperature is 10℃. Therefore, in summer to prevent high temperature exposure, put it in a cool place, winter should pay attention to cold, can be moved to the windless, warmer indoor winter.

4, light: purple back arrowroot avoid direct sunlight, in indirect radiation or scattering light growth is better, in summer direct sunlight is easy to cause leaf burns, so production in the refractive index of 75~80% shading net artificial control light environment cultivation. If you find a leaf burn, you should immediately move it to a place without direct light or shading facilities or shade, and cut off the burned leaves to prevent other pathogenic bacteria from invading the wound.

5. Fertilization: Purple back arrowroot should be applied according to the principle of "frequent application and thin application", and the mixed fertilizer or decomposed compost of peanut bran and compound fertilizer should be applied once every 2 weeks in the growth season. Nitrogen fertilizer should be the main nutrient component, followed by phosphorus and potassium fertilizer. Appropriate increase in nitrogen fertilizer can make the leaf color more beautiful. However, the concentration of fertilizer should not be too large, otherwise it is easy to cause leaf burns to cause fertilizer damage, and even cause plant death in serious cases. Don't fertilize during winter dormancy and summer heat.

6. Diseases and insect pests: Common diseases of purple back arrowroot mainly include leaf spot disease and leaf blight. In the early stage of disease, spray 200 times Bordeaux mixture for 2~3 times every half month, or spray 65% zinc wettable powder for 600 times. Common insect pests are mainly scale insects, easy to occur when ventilation is poor, in the nymph stage with 50% fenitrothion EC 1000 times spray kill.