Hibiscus syriacus 15 seeds

In severe frosts, the plants can freeze a bit. As soon as the plant sprouts again in the spring, the dead parts can be cut away. Because the plants are often grafted onto a rootstock of the primordial form H. syriacus, it can happen that branches with differently colored, blue flowers suddenly develop. Because the rootstock is stronger than the graft branches, these abnormal branches must be cut away from the base as soon as possible.
Hibiscus Syriacus Oiseau bleu

Increase

Often the bush sows itself, and the small plants can be grown further. The hibiscus can also be propagated by root cuttings. On the roots there are buds, from which new shoots can develop. In the autumn, a piece of the root is then cut off. The obliquely cut cutting has a length of approximately 5 cm. The soil is rinsed off, after which the cutting is inserted with 1 eye above the ground in a mixture of sand with peat mole. The use of cutting powder promotes rooting and prevents the development of fungi. After the cuttings have been in a shaded place for several weeks and kept moist, the first roots and buds have developed and can be potted or planted.