You can increase your day lillies by digging up the bulbs, dividing them, and then replanting them. In this way, you can double your number and plants and blooms.

The best time of year to do this depends on your climate. If you live in a very hot climate, it's best to divide them in the fall. If you do divive in the fall, do so at least six weeks before the first frost date.

If you live in a cold climate, is it best to divide your bulbs in the spring.

If you leave in a temprate region, either the spring or fall will work for you.