If and when you transplant them, check the roots after they are removed from
their pots. If you see a lot of roots on the edge of the soil all tangled up,
it would
indicate that the tomatoes became 'pot bound' and suffered from lack of growing
space. If that's the case, gently untangle the visible roots and replant them
in a
larger container.

Sherwin D.

wrote:

My indoor tomato seedlings (four varieties, 2 heirloom, same conditions
as last year) started really slowly this year and now 4 weeks after
germination seem to be slowly wilting--bottom leaves first, no spots or
colour change, not falling over. Any ideas re what I can do? I used
potting soil--is that bad? Would my storebought manure or homemade
compost help?

Thanks,

Sarah