This Month in the Garden: Summer Gardening Tip-Rejuvenation of Hemerocallis (Daylily)

Rejuvenating Daylily

Daylilies are a popular addition to the garden for lasting color and will bloom for a very long time if cared for properly. Most daylilies prefer a humus, well-drained soil in full sun but will tolerate partial shade, allowing for some flexibility when planting. There are over 80,000 cultivars of daylily with a broad range of cold hardiness from USDA zones 1-11, making them one of the most adaptable landscape plants. Out of all the daylilies, my favorite for longest bloom time is Hemerocallis ‘Stella D Oro’. It is known to have one of the longest bloom times lasting from late spring through fall with little maintenance. Blooms can be extended through October with pruning to remove spent foliage. 

Hemerocallis Stella D Oro’ Daylily

PARTIAL REJUVENATION: In mid-summer, when your daylilies are completing their first major bloom and producing seeds, remove faded flowers and seed stalks so that the plant’s energy goes back into producing new blooms. Clean up the appearance of the plant by removing any browned foliage, which usually can be seen around the base of the plant. 

Hemerocallis Stella D Oro’ Daylily

FULL REJUVENATION: When your daylilies are at the end of their bloom in late summer and foliage is starting to turn a yellow-brown, cut them back half way to the ground and remove any additional yellowed-browned foliage. Another option is to put on a pair of gardening gloves and remove all spent foliage that comes out easily. This practice will totally clean up the plant, leaving any new growth remaining. This will rejuvenate the plant giving you new lush green foliage and even more blooms throughout September and into October. (Works best with Stella D Oro Daylily).
Hemerocallis ‘Sammy Russell’
FALL DIVISION: Division of daylily is also best in early fall for the health of your plants. Simply dig deeply around the perimeter of the plant and gently lift the entire clump out of the ground. Use a sharp spade to divide the plant into parts and plant each section into a hole twice the size of the root ball. Be sure to get at least three or more strong shoots and a good root ball around the plant. Cut the foliage back halfway and back fill with soil around the plant. It is recommended to add mulch around the base of the plant to protect the roots. Water thoroughly and keep the plant well watered until the roots become established. At the end of the season once the fronds have turned completely brown remove all foliage to the ground to prevent fungal disease over the winter. Other plants that benefit from fall division are salvia, iris, peony, hosta, goldenrod, monardia (beebalm), nepeta, coreopsis and sedum. 

Hemerocallis ‘Rosy Returns’

Looking for more gardening tips and design ideas? You may be interested in my books. Click on the links below for more information! 

Visit my Author Page/Purchase My Books:

~As Always…Happy Gardening!~

Author: [email protected] Guide to Northeastern Gardening, © Copyright 2018. All rights reserved.