Characteristics
In the wild, it is a shrub with reduced sizes, similar to hazelnut. Before spring sprouting, it develops very attractive hanging bunches: these are the male flowers. Female flowers go unnoticed. It has simple, oval and dentate leaves, with very marked nerves.
Location
Outdoor, in full sun or semi-shade. Avoid long exposures in full sun during summer.
Watering
Moderate, but a constant humidity of the substrate must be kept.
Fertilization
Spring and fall.
It is not recommendable to water during summer.
Re-potting
Every 2 to 3 years, in fall or at the very end of winter.
Substrate
Akadama 100%, or mixed with volcanic clay (30%).
Pruning and pinching
Pruning
Structural pruning can be performed in winter, when the tree is leafless and thus it is easier to foresee the result.
Pinching
Let shoots grow up to 5-6 leaves and pinch the tips. Pinching can affect flowering, so it is recommended to let the branches lengthen when possible.
Wiring
Spring and summer.
Curiosities
Very common in gardening, gathered with plants of the genus «Forsythia», character-ized, like «Corylopsis», for their very early bloom, occurring at the end of winter.