I have been growing my own vegetable plants under fluorescent lights
and heating mats for many years. This year I have encountered a
problem I never had before. I hope this group can help. The seeds
germinate and grow a stem and leaves. They look vigorous. About a week
later the leaves are gone leaving only about a 1.5 inch stem The stem
looks like it is cut off right below the leaves. The stem doesn't look
diseased. This occurred on my pepper and lettuce seedlings.
If it looks sheered off as if by teeth, then they have, as Billy and
Steeve said, been bitten off something.
Set 3 or more mouse traps with peanut butter as bait near the wall of
the room. Mice travel in packs. Look for insects, snails and slugs.
I don't know your experience with fluorescent lights, but I've seen some
oddities with leaves develop that were corrected by putting the plants
Hm.. that sounds kinda weird. My only two issues with similiar
problem: 1) field mouse, now deceased, and 2) over-zealous cat (still
alive, but seedlings are quarantined). I've been growing plants under
flour. lights for several years, never saw anything odd. The
occasional cabbage doesn't develop true leaves, but not entire flats
Lights should be just not touching, they need to be really close. You
don't get a lot of heat from flour. lights. Every few days plants
should be rotated from the ends to the middle and vice-versa.
Rotating the plants now and again, in place, can also help. Harden
the seedlings off properly.
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