Daylilies are among the easiest perennials to grow and care for. But sometimes, daylilies won't bloom, leaving gardeners to wonder what they've done wrong. Usually the solution to the problem is simple.
The Right Conditions
Be sure that your daylilies get full sun, and plant only daylilies that are hardy for your climate. Cold temperatures damage daylilies that aren't winter hardy, and some daylilies won't flower in warm climates because they need cold weather for dormancy.
The Right Fertilizer
Use the right fertilizer. A fertilizer that is higher in nitrogen (N) grows more leaves and fewer flowers. Daylilies need fertilizer that has lower nitrogen and higher phosphorus, which supports flower and fruit growth, NPK 5-10-5, for example.
Check the Crown
According to Oak Forest Technology Solutions, daylilies must be planted so that the crown is at the soil surface. If the crown is planted too deep, your plants may not set flower buds.
Problems with Division
Crowded daylilies won't bloom well. Division of daylilies should occur in spring or early fall. Don't divide in the summer, or within 6 to 8 weeks of first frost.
Is it a Disease?
A new disease, daylily rust, will cause daylilies to cease blooming and also cause the leaves of your daylilies to turn brown and look unhealthy. If your daylily has healthy foliage, it is not diseased.
- Oak Forest Technology Solutions
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Leslie Lane has been a freelance writer, ghostwriter and author since 2007. Her areas of expertise include personality, mental health, gardening, crafts, health, relationships and natural remedies.