Should I move crown imperials that have never flowered or buy some new bulbs now?

Natalie Jordan, by email

Stefan says: Buy more by all means, but be patient with those you already have. Crown imperials always take time to settle down and should be moved as infrequently as possible. I can promise that your plants will gradually begin to produce more and more flowers each year from now on, although I find the lovely yellow varieties are slower and less prolific than the more common orange-flowered kinds.

Yellow crown imperials take longer to flower than orange ones