Petiole : In a simple leaf, the petiole is the structure that attaches the leaf blade to the stem.
The leaf petiole falls of and a soon a new flush of much smaller shoots and leaves follow (Fig R). This help with leaf size reduction and helps make for a more 'natural' looking tree, ...
The overgrown petioles of Rhubarb (Rheum rhabarbarum) are edible.
Petiolated leaves have a petiole. Sessile leaves do not: the blade attaches directly to the stem.
Bonsai Glossary: petiole - The leaf stalk.
Bonsai Glossary: photosynthesis - The process whereby sunlight is absorbed by plant foliage and converted into sugars by combining carbon dioxide and water.
Cutting through the petiole and stalk at the first set of leaves, will cause the latent buds at the leaf axils to start into growth. This, if done carefully will soon give a fine ramified branch structure.
The most common way to defoliate a tree is to remove each and every leaf with scissors, leaving the leaf-stalk or petiole behind. The remaining petioles nourish the tree as new buds contained within the leaf-axils begin to extend and open out.
The leaves are cut along its petiole, leaving the petiole behind. When these petioles become dry, they fall to the ground, leaving the tree free to produce a second wave of new leaves.
Signs: Webs in crotches of branches or petioles, on older leaves and underside, see eggs, nymphs, adults, shed skins. Hold a clean, white sheet of paper under the sick plant leaf. Briskly thump the leaf several times.
Phyllanthus myrtifolius has small leaves, 1/4 inch by 3/4 inch long, with short petioles. Leaves line the long arching stems and are arranged on the stem in a flat plane.
a fast grower; takes heavy top pruning; don't give extra iron or high Nitrogen fertilizer, especially not well into autumn: that could cause winter twig die-back; when leaf pruning, allow the petiole to remain; ...
Video--"How To Propagate House Plants Using Leaf Petiole Cutting"
--From VideoJug
A Guide to Bonsai Basics
How to Start Bonsai Experience ...
In middle to late October, snip off the leaves at the petioles to expose the branch structure. Then wherever a branch is leggy and lacking ramification, cut it back leaving only a single plump, strong bud near the tip.
 See also: Tree, Trunk, Bonsai, Plant, Species
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