Outdoor bonsai

These are trees that, by nature, must be placed outside, ideal for balconies, gardens and terraces

Carpinus betulus

Family

Betulaceae

Origin

Europe / South-East Asia.

Etymology

«Carpinus», classical Latin name for carpe, «betulus» that looks like a birch (genus «Betula»).

Carpinus betulus

Characteristics

Deciduous tree up to 30 m high, with gray bark, fissured with age. Oval leaves, dentate margin and rounded base. Hanging male flowers of 3-5 cm long, and female flowers grouped at the end of the year branches. The fruits form hanging clusters.


Location

Outdoor, in full sun or semi-shade.


Watering

Abundant, above all during summer.


Fertilization

From spring to fall, marking a pause in summer.

Re-potting

Every 2 or 3 years, at the beginning of the spring sprouting.

Substrate

Akadama 100%, or mixed with volcanic clay (30%). It is a tree that likes organic matter and a slight acidity of the soil, so it can be mixed with white peat.


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 the tree grow shoots, and when they have reached up to 10 leaves, cut down to leave only the 2 first leaves.

Wiring

Spring and autumn.


Curiosities

Its wood is at the same time hard and moldable, formerly used in the manufacture of wheels.


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Carpinus betulus