I have over-wintered several bare-root geraniums in paper bags. When should I cut back the plants and pot them up?
In mid-March, remove the bare-root geraniums from their storage location and prune or cut back each plant. Prune out the shriveled, brown, dead material. Cut back to solid, green, live stem tissue. After pruning, pot up each plant and water thoroughly. Place the potted geraniums in a sunny window or under fluorescent lights. The plants should begin to leaf out in few days. Bare-root geraniums that are pruned back and potted in mid-March should develop into healthy, attractive plants that can be planted outdoors in May.