Cultivation

Winter protection for Oak-leaf hydrangea

Hydrangea quercifolia W. Bartram

Winter protection for Oak-leaf hydrangea is essential to preserve last year's shoots, where flower buds are initiated. Without protection of the above-ground part, the plant loses its ability to bloom in the following season.

In the reference 5 varieties crop Oakleaf hydrangea, where this is mentioned in the description.

The main feature of preparing the crop for winter lies in protecting the flower buds located on last year's shoots. Unlike panicle and smooth hydrangeas, freezing of the branches of Oak-leaf hydrangea leads to a complete absence of flowering. To protect the above-ground part, air-dry covering using frames and covering material is applied; it is important to ensure protection from desiccating winter winds.

Agrotechnical measures include mandatory mulching of the root zone to a height of 15–20 cm after the soil freezes. It is recommended to leave dry inflorescences for the winter to provide additional protection for the buds. Young plants in the first two years of life require mandatory covering regardless of climatic conditions due to their poorly developed root system.

General information about the subject — on the page Winter covering.

Sources8

Varieties of Oakleaf hydrangea mentioned in the description

Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.