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This is a discussion on sanderianum leaf growth speed.... within the Genus Specific forums, part of the Orchid Culture category; The discussion of base vs. tip growth of leaves is pretty interesting. Another way I've ...
The discussion of base vs. tip growth of leaves is pretty interesting. Another way I've been able to observe leaf growth regions is on "dirty" leaves. Often dust and grit will collect in the older leaf axils during slow growth periods. When faster growth resumes, you'll see a line of dust/dirt moving out from the crown of the plant. This is especially noticeable on monopodial plants, and plants which grow like a string of connected monopodials, like the paphs. Just my $.02