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Quickly Fading Flowers

We have small perennial gardens in the front that consist of iris, daylilies, and shasta daisies. I've weeded, mulched and watered pretty well this season. Both the lilies and daisies bloomed once and then stopped. Neighbors have plenty of blooms still going. The plants get all sun and I deadheaded the daisies once. What can I do to keep them blooming next year? Should I dig them out and amend the soil? Split them? What's the best way to stake them? I'm a beginner. St. Louis, MO.
Submitted by BHGPhotoContest

If the plants have been growing in the same area for some time, it may be time to divide them. When they get overcrowded, they act just as weeds in competing with one another for nutrients and moisture. Late summer or early fall is a good time to divide the perennials that you mention. While you're dividing and replanting them, it would help to work in some compost to build up the organic matter in the soil. The extras that you get from divisions can be used to expand your perennial flower bed or shared with friends.
None of the plants that you mention should regularly need staking if they have adequate sun and nutrients.

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I have lilies and they are daylilies,,,,,,,they are called day lilies because the flower only last one day at a time. They do have lots of buds that come on as the summer goes, or are rebloomers, mid-late August they bloom again. Jean
Submitted by itsaklinker