I started geraniums from seed in December. I now need to pot up and was wondering if I can put in garage with outside temps going down to low 30's at night and 50-60 during day
Definitely, NOT! Seedlings require a constant temperature of near 70ÃÂºF..24 C.....To subject them to such low temperatures even for short periods would spell doom to them.
Later, as the seedlings mature into larger plants they can be acclimatized to outside temperatures by giving them daylight sunlight, back into the warmth, then back outside each time giving more extended time.
We can assume you have thinned the seedlings, and they have gained their second set of leaves.
Thank you. I am new at this. They are about 6-8 inches tall and blooming. I will harden them off as it warms up. I am glad I asked. I would hate to have killed them.