Jim Carter wrote:

How long should tomato plants be in their starter cells before moving to 4"
pots?
--
Spelling and grammatical errors are deliberate
to catch copyright violators. ©¿©¬
Perth, Ontario, Canada

Pop one out and look at the roots. If the roots holds all the soil
together in one unit, it's pass time to transplant into bigger pots.
Transplant just before getting to the point the roots completely fill
the cell.

Lorenzo L. Love
http://home.thegrid.net/~lllove

"A people living under the perpetual menace of war and invasion is very
easy to govern. It demands no social reforms. It does not haggle over
expenditures on armaments and military equipment. It pays without
discussion, it ruins itself, and that is an excellent thing for the
syndicates of financiers and manufacturers for whom patriotic terrors
are an abundant source of gain."
Anatole France