Key Points of Chrysanthemum Cutting Propagation for More Efficient Chrysanthemum Breeding and Seedling Production

Chrysanthemum cutting propagation is a method of asexual reproduction in which chrysanthemum branches are used as cuttings and inserted into a growing medium to grow into new plants. Chrysanthemums grown from seed are prone to variation and have poor seed-setting ability, while cuttings can fully preserve the variety characteristics of the mother plant. The operation is simple and seedlings form quickly, making it the most widely used propagation method in chrysanthemum seedling production.

Cuttings should be taken during the mild growing season, most commonly in spring and early summer. The cuttings are usually selected from the tender shoots at the tips of vigorous mother plants, about ten cm long, retaining two or three leaves at the top. The lower leaves are trimmed off to reduce transpiration, and the cut should be smooth. If necessary, they can be dipped in rooting hormone to promote root development.

The growing medium should be loose, breathable, and well-draining; river sand, vermiculite, or sandy loam are all suitable. After inserting the cuttings, water thoroughly and place them in a semi-shaded, well-ventilated spot for care. Mist frequently to maintain humidity, and avoid direct strong light and waterlogging of the medium. When conditions are suitable, the cuttings generally root and sprout new shoots in two to three weeks.

After rooting, light can be gradually increased. Once the seedlings have grown several new leaves, transplant them with the soil attached for final planting. During the seedling stage the plants are tender, so watch for common pests and diseases such as aphids, powdery mildew, and viral diseases, and promptly remove any diseased or weak seedlings. As long as the cuttings are vigorous and temperature and humidity are managed properly, the survival rate of chrysanthemum cuttings is usually quite good.