I'm in the process of beginning my second annual indoor seed starting
exercise. I had a great time last year and learned a great deal.
With the exception of 80 MPH winds that blew over about 100 seedlings
that were hardening off, I had pretty decent success (the little
containers actually blew throughout the entire neighborhood).

I have two questions that I could use some help with:

1. Is there a good rule of thumb to determine when seedlings should be
repotted? I think that I stunted the growth of some perennials last
year by not moving them to larger pots. My Purple Coneflowers looked
healthy all year, but never grew higher than 2-3" after they were
placed outside. I used the little jiffy pellets for them and they had
a couple inches of roots dangling beneath them when I transplanted.
They definitely should have been repotted, but I thought they would
start cruising along when I planted them out...? Should be
interesting to see how they do this year.

2. I picked up some Munstead Lavender seed to grow as an annual. The
seed packet said to start indoors anytime during the winter, so I
started it right away. I'm still about 12 weeks to last frost - is
the lavender going to have a hard time being transplanted after
becoming accustomed to the comfortable indoor conditions? If space is
really the only issue, I can make room for them and still provide
ample light.

Thanks all!

Aaron
Zone 4
Minneapolis, MN