Dictionary of Flowers And Plants For Gardening

A layer of cells at the base of the petiole (leaf stem) where the leaf splits away in pre-winter. Actually there are two layers of cells, in harvest time the last one extends and splits from the top layer. It is accepted that diminished daylight and light hours prompts a decrease in photosynthesis and thus a decrease in chlorophyll creation which at that point prompts abscission. in pre-winter.

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