Root growth
The bonsai develops a root system in miniature format, which takes on the same functions as the roots of normal-sized trees. With increasing age, the root strength increases due to the growth in thickness. Their outer skin is lignified so that these structures appear trunk-like.
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Tasks of the roots:
- Absorption of moisture and dissolved salts
- Anchoring the bonsai in the ground
- Storage of nutrients
Origin of the roots
The roots grow as protuberances in search of nutrients and water from the vegetation cone into the soil. This forms the part of the plant body that is equipped with dividing tissue and can thus ensure the formation of new plant organs. A root hood protect the cone from injury. It gets a few days old and then decomposes into a slimy mass.
Root hairs
These structures show up as fine hair fluff at the root tips. The more fine roots the plant has, the larger the surface for water and nutrient salts and the more vital the bonsai grows. The rear root area is used to forward and store these substances so that the metabolism of the mini tree is maintained.
Form the roots
The formation of the root ball plays an important role in the art of bonsai. It follows the principle that there is a balance between Treetop and root ball exists. The appearance, on the other hand, is influenced by individual taste, but here, too, there are generally applicable techniques. They refer to the shaping of the Nebari. This root approach describes the near-surface and stem-like roots.
Cut the roots
When repotting a bonsai, dedicate yourself to root pruning. Cut old and dead root parts to support vigor and promote leaf growth. The tree develops new suction roots at the base of the trunk. Remove strong roots that grow straight down. This shifts the growth to the laterally pronounced root strands. The wood invests its energy in these areas, so that the lateral roots become thicker over time. This method can be used to form a ball with radial roots.
Tips
A bonsai is usually repotted between March and April or when the soil is completely rooted.
Promote new roots
The tourniquet method is used to form a new nebari over the old one. Place a copper wire around the base of the trunk, making sure that it is snug against the bark. The tissue becomes constricted in this way when the trunk expands. This restricts the transport of nutrients and the bonsai is forced to develop new roots above the ring. The measure is recommended for spring, before the new growing season begins.
