Winter protection for Hibiscus syriacus

To protect young plants in the first 2–3 years of life, mulch the root zone with a 17–20 cm layer of peat, humus, or dry leaves, and wrap the crown with breathable materials such as agrofibre or burlap. The use of polyethylene is unacceptable due to the high risk of bark rot during thaws.

In regions with severe winters, for mature specimens, use frame covers wrapped with protective material or spruce branches to ensure snow retention and ventilation. Since the arborescent form of the shrub, especially in standard forms, makes it difficult to bend to the ground, the main focus is on insulating the trunk and protecting the crown from the wind.

The necessity of protection depends on the age of the plant: as it becomes established, the cold hardiness of the crop increases, and mature specimens in a temperate climate can overwinter without protection. Before the onset of frost, carry out a pre-winter irrigation, completing it well before the soil freezes to prevent the formation of an ice crust.