On Tue, 9 Mar 2021 21:59:31 +0000, Jeff Layman
wrote:

Have you got anything else growing in that compost? I'm wondering if it
has been contaminated with lows levels of a herbicide like aminopyralid.

I mostly use "Pro Mix," U.S./Canadian product. Pretty much everything
else does fine in it, under the same light. Tomatos, Leeks, Tuberous
Begonia cuttings and seedlings. The light I'm using has a number of
colors in series string, including IR. Look up "Vipar Spectra;"
Chinese made so probably widely available, perhaps under various
names.
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