There are ten species of the genus Corylus, which are represented in the temperate latitudes. These shrubs are considered undemanding and easy to care for. They are not widely used in bonsai culture, although their slightly heart-shaped foliage makes for an aesthetic appearance.
Hazelnut as a bonsai is rarely found
useful information
The leaves of the hazelnut are difficult to reduce, which is why this species and its relatives are rarely grown as bonsai. Nevertheless, the trees are suitable for different styles. The freely upright form is just as possible as double or multiple trunks. The idiosyncratic literary form is not recommended for the hazel.
These species are eligible
The forest hazel (Cosylus avellana) is a native species that is considered to be vigorous and develops upright shoots. Contorta is a special form of the native wild species, better known as the corkscrew hazel. Their branches are bizarrely twisted, which proves particularly attractive in bonsai art. The tree hazel (Corylus colurna) develops a regular and wide to conical tree crown, in which there is a continuous central shoot.
Make a bonsai
As with all woody plants, pruning and wiring techniques are also recommended for the hazelnut. Regular checks and interventions are necessary to ensure that the plant does not become wild over time.
To cut
Hazelnut bushes are mould-tolerant, so you can constantly shorten shoots. Heavier cuts are also not a problem, since the hazel will drive out of the old wood. Remove superfluous branches and those that disturb the overall picture in the leafless winter months. At this time you have a better view of the branches.
wire
From June, young shoots can be shaped by wrapping wire around them. Wrap the wires in a spiral around the branches with a tight fit, then bend them into the desired orientation. It takes about half a year for them to maintain their growth habit on their own.
tips
If the crown branches are already older, they can be redirected by anchoring them. This method is recommended for spring when the tree is in bud. At this point, the wood is slightly softer and more flexible due to the flow of sap.
Care for
In summer, the hazelnut bonsai attaches importance to constantly moist soil so that the roots do not dry out. If nuts are desired, you need to increase the watering. Dry soil impairs fruit ripening. During the winter months, the bonsai requires slightly less water. Never let the substrate dry out completely.
After the leaves have unfolded in spring, the wood is grateful for a nutrient supply. This takes place every two weeks until the beginning of September. Liquid fertilizers are the best choice. They are administered with the irrigation water and should only be poured onto soil that has already been moistened.
How to repot:
- at least every two years
- shorten roots
- use fresh bonsai soil
- Don't forget the drainage layer and cover grid