Any time, but probably best when they restart root growth in late summer. Peter (UK) On Tue, Apr 23, 2013 at 9:20 PM, Sylvia Sykora <slsykora@sbcglobal.net>wrote: > I have a couple of 3" pots filled with C. coum album seedlings from > December 2010 sowings, a few of which bloomed this spring. Can anyone > suggest the best time to pot these up individually? >