How to propagate thread iron

Cutting propagation

The suitable time for cuttings of thread iron is generally between March and October. When cuttings, place the cuttings with the buds facing upwards and insert them into the soil at a slight angle. The cutting depth should be about 1/2-2/3 of the cuttings.

Management after cutting

Water thoroughly immediately after planting. The moisture content of the cutting medium should be around 60%, and the relative humidity should be maintained between 80% and 90%. Pay attention to replenishing water in time. Callus tissue can usually be formed after half a month. At this time, in order to facilitate rooting, you can begin to gradually reduce the amount of watering.

It is best to keep the temperature 3-6℃ lower than the substrate temperature. You can use a film to cool down and keep moisturizing. The suitable temperature for rooting cuttings is about 20-25℃. If the temperature is above 30℃, ventilation is needed at noon and water spray is used to cool down.

After planting, you should spray with 65% mancozeb or 800 times diluted 50% carbendazim. Generally, spray once every 5 days, especially after rain, remember to spray in time. After the cuttings take root, you can gradually reduce the number of spraying times. After the callus tissue is formed, foliar fertilizer is needed once a week, and in the later stage, a mixture of 0.2% to 0.5% urea and potassium dihydrogen phosphate can be sprayed.

Cutting seedling cultivation

After the cuttings have grown for half a year, they can be transplanted when they are about 15-20 cm in length. Transplanting is generally carried out in spring and autumn, with the suitable time being between February to May and September to October. When transplanting, you should choose a place with a shade density of 60%-70%, a water source, and stone with moss to increase the survival rate. It is generally best to use the clamp nail method for cultivation. Use steel nails to compact the threaded iron roots, then clean the root system, retain other mosses, increase moisture content, and thus improve the survival rate.