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Why do trees have differently shaped leaves?
A large, lush Florida palm leaf. Thin aspen leaves rustling in ... At left is a typical warm weather leaf from a southern live oak tree. At right is a leaf more typical of cooler weather, from ...
How pruning an oak tree at the right time can head off a deadly new disease
A deadly new oak-tree disease can be prevented by pruning them in the dormant season (if needed) instead of spring or summer.