Indoor bonsai

Indoor says trees are trees coming primarily from tropical climates that do not support low temperatures. We must place them indoors, always close to a source of natural light.

Zanthoxylum sp.

Family

Rutaceae

Origin

There are 5 known species, all from Madagascar.

Etymology

“Operculum” meaning “small lid” and “karya” from its fruits name, walnut.

Zanthoxylum sp.

Characteristics

It is a deciduous tree and has small complex leaves. The back of the leaves are darker in colour than the front. Flowers have 4 or 5 petals and easy fructification.


Place

It is considered an indoor tree due to its tropical origin and it can live indoors all year round. If this is the case it will keep its leaves during the winter, losing them, if kept outdoors, during the winter month. Leaves will srpout again in spring. It is considered a very resilient species.


Irrigation

Moderate but do not let the compost dry out.


Fertilization

Spring and autumn. It is best not to feed in summer, as it could cause excessive leaf growth.

Transplant

Every 2 or 3 years at the end of winter.

Substratum

100% Akadama or mixed with 30% of volcanic clay. Type of soil is flexible in this species.


Pruning and nipping

Pruning

Structural pruning can be carried out in winter, as it is easier in a tree without leaves.

Nipping

Once the leaves are fully grown cut a few back to reduce the volume of the tree top.

Fencing

From spring to summer.


Curiosities

In this species there are male trees (with stamen in its flowers) and female trees (with pistil). Flowers will be different in both plants. To grow fruits you will need to have at least 1 male plant and 1 female plant.


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Zanthoxylum sp.