Callus
The scar tissue that forms over a wound where a branch has been pruned
off of a tree; it is part of the tree's healing process.
Cambium
The thin layer of green colored cell tissue growing between the bark and
the wood of a living tree.
Callus - Corky-texture tissue that forms over a wound on a trunk or branch.(e.g.: a pruned branch).
Cambium - A narrow layer of cell tissue growing between the bark and the wood of woody plants. In live wood, the cambium is green and moist.
CALLUS Tissue that forms over a wound on a branch or trunk as part of the healing process.
CANDLE Name given to the extending bud of a Pine before the new needles open.
C Callus - The raised roll of tissue that forms as a wound heals and closes
cambium - The layer of tissue between the xylem and phloem, where new wood is formed.
chokkan - Japanese term for the formal upright style ...
Callus - New growth that forms over a wound or pruning scar.
Cambium - The thin layer beneath the outer bark and the heartwood that produces new bark. Nutrients and water flow through the cambium.
After callusing is evident, the grafts are ready for hardening- off. The understock is pruned back about half-way, and the grafts are placed on the medium for an additional 4 to 6 weeks. At the end of this period the remaining top is removed.
Large cuts do not callus over so place large cuts on the back of the tree or allow cuts to rot and form irregular hollows to integrate with the design.
This provides a surface for callus and hopefully root development. It helps Malus, Acer, and roses. It is also interesting to watch where roots develop on various species. If you wound, the roots will often form in a line along the callus tissue.
Root Cuttings: Ovuli are masses of callus tissue that often form at the base of trunks of older trees. They produce shoots, and if mounded with soil, adventitious roots.
Large scale pruning in spring can lead your Chinese elm to form calluses, these can be reduced by carrying our large scale pruning in late Summer or early Autumn.
more compact growth; cuttings over three inches long are very, very easily propagated, so you can start with a branch or trunk portion that is already well shaped and branched; cuttings up to at least two inches in diameter don't need to be callused; ...
Pruning : Do most pruning in spring or early summer as these trees can have a tendency to be slow in healing later in the year. Calluses can be bulky so reduce wounds properly.
 See also: Bonsai, Trunk, Bark, Species, Tree
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