I've had a crinum in the same pot for 5 or 6 years now. It will need to be repotted next spring because its roots have completely filled it's pot. I was planning to repot it this spring but gave up because I couldn't budge it. It bloomed 3 times this spring and summer. It spends the summer outdoors then is stored dry indoors for the winter. It usually puts out a bloom stock over the winter as well. I get a lot of compliments on it as its an unknown bulb for most gardeners here.