Outdoor bonsai

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

Rhododendron indicum

Family

Ericaceae

Origin

Japan

Etymology

From the Ancient Greek “rhódon”, rose, and “dendron”, tree.

Rhododendron indicum

Characteristics

Shrub or small deciduous or evergreen tree according to species or variety. The Azalea is very appreciated for its flowering. There are thousands of varieties and new ones are discovered every day.


Place

Outdoor throughout the year.


Irrigation

Abundant in summer, moderate in winter.
It requires pure water, with an acidic pH.
It does not support lime.


Fertilization

Spring and fall.

Transplant

Every 2 to 3 years, after flowering.

Substratum

acidic pH.
100% Kanuma, or mixed with a 20% of volcanic gravel.


Pruning and nipping

Pruning

After flowering.

Nipping

When the shoot has grown up to 6 to 8 leaves, cut down to 2 leaves.
It is convenient to thin the flowers, so as not to weaken the plant. We will leave the flowers for a week, after which we will remove them. At the point of insertion of the flowers is where the buds will appear, usually in the number of five. From these shoots we will select the two that are best placed horizontally, eliminating the rest. These two shoots will be pinched to two leaves. We will also remove the old leaves.

Fencing

Spring.


Curiosities

In Japan, the cultivation of azaleas (“Satsuki”) as bonsai forms a separate discipline, having its own asso-ciation of amateurs and professionals. Azalea, unlike most plants designed as bonsai, has more vigour in the lower branches than in the apex, which we must take into account when pruning and pinching.


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Rhododendron indicum