> >It sounds like your plants are what is called leggy. They don't have
> >enough root structure to feed the plant, I have found that this is
> >caused by either to much light or to warm of soil when the plants are
> >>I planted a lot of seeds in various containers. Most are sunflowers or
> >>other flowering plants. I've had some success; a "Dwarf Holiday" sunflower
> >>that's straight and tall and will probably bloom soon, and some Marigolds
> >>that have already bloomed. But, most of the plants grow tall, thin stems
> >>and flop over from their own weight after they get about 6 inches tall.
> >>This happens whether I use tiny seed-start containers or large pots.
> >>It also happens whether the plant is in a north or south window, and
> >>doesn't seem to be affected by the amount of watering.
Actually, plants grown in windows during winter and spring commonly don't
get ENOUGH light. Try using an inexpensive shoplight fixture, placed 3 or
4 inches above the plants. I've had good success for several years
starting my plants this way. Some people advocate special grow-bulbs, but
I've always just used shoplight fluorescent tubes (I was going to do a
comparison this year, but couldn't find the 4' Grolux tubes).
I will agree that warmth can be a problem. I grow my transplants (even
heat-lovers like tomatoes and peppers) on our unheated enclosed back
porch. The plants are stockier when exposed to cooler temps, and are less
likely to experience shock when placed outside. A max/min thermometer is
nice in this setup, because it'll help you to know when temps are ok to
grow hard seedlings without stunting them (tomato seedlings can take night
temps in the upper 40s without a problem, but peppers prefer it at least
in the low 50s).
USDA zone 8, Sunset zone 4
"Rudeness is the weak man's imitation of strength"