"Pete C" wrote ...
Not come across this before. I have a dozen or so tom seedlings in a
multichamber tray on my windowsill. 3 diff varieties. They are 1" to 2"
atm. About half of them have leaf tips which are browning, and going dry
and crumbly. It's mainly the smaller ones, the bigger ones are fine.
What's up (doc)

Dry atmosphere around them? Over a radiator perhaps?

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Regards
Bob Hobden