Posted: 17/04/2015 at 10:35
I saw a garden famous for its daff displays on TV last year or so where the very mature owner simply dug up and instantly transplanted any which needed moving, even if still in flower where you have advantage of knowing which variety you are moving. Very handy when sorting out a mixed planting. The trick was to avoid any delay, take them up with a decent root ball and re-plant them deep. He wan't particularly gentle in his handling but dealt with one plant at a time. Worked for him for decades so I guess there is something in his method.