Snowball in 6A
Here is a picture of my snowball viburnum. I am very new to gardening and I don't know if it's still to cold to plat this outside. We're still getting below freezing temps during the night. Should I put them outside and bring them in at night until it gets warmer? To what temp? Also I read some old post and I've come to a level of acceptance that I may not get blooms until this these are 6ft. Considering I'm really plan of taking good care of these when will they be 6ft. Next year or the year after? Any soil additive recommendations to promote growth?
Shown are 3 gallon pots