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  Re: [Aroid-l] arisaema candidissimum
From: Peter Boyce <phymatarum at googlemail.com> on 2011.09.14 at 05:38:14(22199)
Without a shadow of doubt there are two factors that contributed to this declining reapparance. One is plants emerging "too early" in the year and being set-back by cold and the other is the growing season too short. The former issue is very tough to counteract as the emergence 'trigger' seems to be in-built and not triggered by external conditions. One may to counteract this is the 'old fashioned' method of a deep mulch such as bracken but even then the new shoots grow so quickly they will often etiolate badly.

Regarding short grwoing seasons (and thus declining tuber size year-on-year) the ebst way is to really pack in the fertilizer when plants are active. Wilbert does this on his Amorphs and gets the most remarkable tuber-results in a short growing season.

Peter.

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