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From: Tom Ogren (Wed Feb 4 23:01:19 2004) Drawing (from Safe Sex in the Garden) of a male tree that has been top-grafted over to wood taken from a female tree. The end result will be a total sex change, and a high allergy male tree will have been changed into a pollen-free female tree. Top-grafting is only done while trees are dormant, usually in late winter. |
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