How to Propagate Hyacinths? A Detailed Explanation of Common Propagation Methods
Hyacinth propagation is usually based mainly on bulb division; in breeding, seed propagation is used, and bulb propagation can also be used. After the mother bulb is planted for 1 year, it produces 1-2 daughter bulbs, and some varieties can produce more than ten daughter bulbs. This can be used for bulb division propagation, and daughter bulbs require 3 years to bloom. For seed propagation, sow in autumn; they do not germinate until February of the following year, and seedlings take 4-5 years to bloom. Let us take a look at hyacinth propagation methods together below!
Growth Habits of Hyacinths
Hyacinths prefer sunlight and tolerate cold, and are suitable for growing in cool, moist environments and loose, fertile sandy soil; they dislike waterlogging. They prefer warm, moist winters and cool, slightly dry summers, in sunny or semi-shaded environments. They like fertilizer and are suited to fertile, well-drained sandy loam. Ground planting, pot planting, and water culture are all possible.
Hyacinths root in autumn, new shoots emerge from the soil in early spring, bloom in March, and the fruit ripens in late May. In early June the aboveground parts wither and the plant enters dormancy. Flower bud differentiation occurs during the dormant period, with an optimum temperature of about 25°C, and the differentiation process takes about 1 month. After flower bud differentiation and before elongation growth, there must be a low-temperature stage of about two months, and the temperature must not exceed 13°C.
During the growth process of hyacinths, the root system grows best when the bulb is at a low temperature of 2-6°C. The optimum temperature for bud sprouting is 5-10°C, the optimum temperature for leaf growth is 5-12°C, and 15-18°C is most favorable during the bud-appearing and flowering stage. The storage temperature for bulbs is 20-28°C, with 25°C being the optimum and most ideal for flower bud differentiation. They can tolerate short periods of frost. They prefer a cool environment with moist air and sufficient sunlight, and are relatively cold-tolerant.
Bulb Division Propagation of Hyacinths
After digging up the bulbs in June, separate the large bulbs from the daughter bulbs. “The large bulbs can bloom in early spring of the following year after autumn planting, while the daughter bulbs need to be cultivated for 3 years before they can bloom. Because the natural bulb division rate of hyacinths is low, generally after the mother plant is planted for one year it can only produce 1-2 daughter bulbs. To increase the propagation coefficient, in summer during the dormant period, a scoring operation can be used on the large bulbs to stimulate them to grow daughter bulbs.
The method is as follows: in August, when the flower buds have already formed, first evenly scoop out part of the basal plate at the bottom of the bulb so that the wound at the basal plate is concave, then cut once vertically and once horizontally from bottom to top, forming a cross-shaped cut, reaching as deep as the bud center inside the bulb. At this time, mucus will flow out, and 0.1% mercuric chloride water should be applied for disinfection. Then expose it to strong sunlight for 1-2 hours, and then spread it flat indoors. First keep the room temperature at about 21°C to allow callus tissue to form. When the base of the scales swells, gradually raise the temperature to 30°C with a relative humidity of 85%. In about three months, many small bulbs will form. The small bulbs induced in this way take 3-4 years of cultivation to bloom.
Seed Propagation of Hyacinths
Hyacinth seed propagation is mostly used when breeding new varieties. Sow the seeds in autumn in the culture soil of a cold frame, cover with 1 cm of soil, and they germinate in late January to early February of the following year. The small bulbs cultivated from seedlings bloom after 4-5 years. Under ordinary storage conditions, the seeds can remain viable for 3 years.