Outdoor bonsai

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

Stewartia

Family

Theaceae

Origin

Asia: Japan

Stewartia

Characteristics

Deciduous tree, much appreciated for its bark. Its leaves show a spectacular purple color in autumn.


Place

Outside all year, especially in autumn to get the scarlet colouring. In summer avoid direct sun exposure, to prevent the burning of the leaves.


Irrigation

During the growing season, water abundantly with soft water (not carbonated). Rainwater is ideal. It is important not to let the soil dry completely, since it can cause the leaves to wilt.


Fertilization

In spring and fall, only with a fertilizer for ericaceae.

Transplant

Every two years, at the beginning of the spring sprouting.

Substratum

100% Akadama, or mixed with a 20% of kanuma and 20% of organic gravel.


Pruning and nipping

Pruning

In early spring.

Nipping

To be done with the fingertips, removing the tips of the incipient bud before it grows, leaving the two first leaves. If it has already grown, cut to that first pair of leaves. Pinching can be done throughout spring.
Defoliation can be total or partial.

Fencing

In spring, but with much care since the wire can leave marks on its thin bark.


Curiosities

Fine, very delicate leaves, with a very nice autumnal color change. It is indicated for the for-mal vertical style and for the formation of forests.
It can be reproduced through cuttings of fine branches or through seeds sown in summer or spring.


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Stewartia