What is a scaffold limb?
Looking up the definition at Dictionary.com, I found one that could that apply: any raised framework.
The plant (shrub, tree or vine) scaffold consists of the largest, strongest limbs or branches which form the main structure of the plant. In some of my blog articles and Youtube videos, I point out the importance of training a strong scaffold, beginning while the plant is very young. A strong and properly trained scaffold will allow the plant to withstand wind, snow loads, and fruit with minimal limb breakage.
Here are four examples:
Prunus persica (peach)
Vitis rotundifolia (Muscadine grape vine)
Acer palmatum var. dissectum 'Tamukeyama' (Japanese maple)
Magnolia denudata (Yulan magnolia)
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