Does anyone have experience here in the deep south (Florida) with annual cutting back of Agapanthus that is permanently planted in the garden? I'm wondering if Agapanthus benefit from cuttung back in winter or early spring either annually or every few years. Do they benefit from digging and replanting every few years? By the end of the year many of the leaves look ratty and yellow. After a few years in the ground they tend to grow up on top of themselves as the clump enlarges and look like they might need digging, separating and replanting. I understand they flower better the more crowded they are, so is there a middle ground? Should they just be cleaned up or should they be cut back? Periodically dug and re-planted?