Tulip Propagation Methods and Cultivation Techniques Explained in Detail

Tulips are also called "dry lotus" and are world-famous bulbous flowers. The flower stems are stiff and upright, holding the blooms high above, with neat flower shapes, rich and lustrous colors, beautiful and elegant. They can be planted in the ground, in pots, or used as cut flowers, with extremely high ornamental value.

I. Propagation Techniques

1. Bulblet propagation. Tulips renew every year, drying up after flowering, and beside them a new bulb and several bulblets are produced. The number of bulblets varies by variety; early-flowering varieties produce few bulblets, while late-flowering varieties produce many. The number of bulblets is also related to cultivation conditions. Generally, bulblets are planted in September-October, and in the south this can be extended to late October to early November. Before planting, prepare the soil and make beds. First dig out 15 cm of soil from the bed, spread well-rotted manure and plant ash as base fertilizer. Cover the base fertilizer with a layer of fine soil, plant the bulblets on top, and cover with soil at a thickness about 2 times the height of the bulblets. Row spacing 14-16 cm, plant spacing 5-15 cm. Water after planting to promote root growth. In winter in the north, cover with horse manure, straw mats, and other cold-protection materials. Remove the cold-protection materials before the soil thaws in early spring. For pot cultivation, plant 4-5 plump, large bulblets per pot, with soil covering level with the top of the bulbs, and add base fertilizer at the bottom of the pot. Generally, after planting bulbs in autumn, the pots can be buried in the soil to promote rooting, then dug out in the following spring, watered, and given normal pot cultivation management. If earlier flowering is desired, they can be dug out at any time starting in December. If placed in a greenhouse after potting, they can bloom at Spring Festival.

2. Seed propagation should be done in autumn, and after winter low temperatures they germinate in spring. Both greenhouse and open-field sowing are possible.

II. Cultivation Management

Choose a cultivation site with ample sunlight, fertile soil (sandy loam), and good drainage. Apply 2-4 times of light fertilizer before and after germination and flowering. For pot cultivation, water when dry, and apply dilute liquid fertilizer sparingly and frequently. Potted bulb growth is generally not plump, and they can be discarded after flowering. If you want to continue using them for propagation, they should be transferred to ground cultivation after being taken out, and it takes 1-2 years to flower. For open-field planting, when 6-7 leaves turn yellow and dry, dig up the bulbs, dry them thoroughly in the sun, and store them on shelves in a dry, ventilated, cool indoor room. Small bulbs need 3-4 years to be cultivated into large bulbs. After 2-3 years, most bulbs can flower; at this time, cutting flowers does not affect bulb development, so bulb cultivation can also serve as cut flower production.

Tulips can undergo forcing cultivation. Currently, 5 steps are used abroad: (1) The bulbs should be dug up slightly early, and immediately after digging treated at 34°C for 7 days. (2) The treated bulbs are then stored at 20°C until flower bud differentiation is complete, which takes about 30 days. (3) Then transfer to 17°C for 14 days. (4) Then transfer to 50°C for 60-65 days. (5) Finally plant in a greenhouse with a soil temperature of 16°C and a room temperature of 18°C. Calculating according to this procedure and moving it forward with earlier treatment can achieve the goal of flowering on New Year's Day. If delaying the flowering period, lower the required temperatures appropriately.