potted lilacs on balcony?
MegNYC discussed lilacs in a 20" pot on another thread. Any tips/other experience with potted lilacs? My nursery has Dwarf Korean and Miss Kim Dwarf Korean (both grow 4-6'). Miss Kim is on sale 5G. bucket for $25, usu. $40. 2G. buckets are $25.
How do they take to pruning? I wouldn't want them to go much bigger than the existing 5G. size. Also, their zone hardiness goes to 3--safe outside, properly protected, or should/can I winter them in my underground garage?
Also, does one need to prune roots on something like this? I'm new to gardening--just did 3 balcony rail pots of annuals last year--so this would be a novice's investment. If it's a bad idea, would you suggest Alberta spruce as someone else has recommended in another post? Thank you!