Irises: Should I toss that old bloomed out mother rhizome?, 0 by zacattack

zacattack wrote:
If you have adequate rhizomes from a variety when dividing, the answer is normally yes. Hovever, if the plant has produced limited increase, and you want as many new plants as possible, pot up the old rhizome in mix with lots of sand. I use a potting mix of about 50/50 sand and spaghnum peat moss. This is about 6 or 7 weeks growth. Most of you folks already know this, but I thought it might be helpful to newbies.