Tips for ControllingDaylilies. When using a lawn mower or whipper snipper to remove the top part, make sure that you are removing it to the ground level. Daylilies (Hemerocallis), grown in zones 1 through 24, are blooming perennials that require little care and maintenance. Weed control in the lily beds and landscaping schemes can be an... How to ControlDaylilies. Daylilies (Hemerocallis fulva) are one of the most common bulb plants in America. Research continues to develop more effective and sustainable pest control methods, including breeding daylilies for pest resistance and using biological control agents. Get free shipping on qualified Daylilies Pest Control products or Buy Online Pick Up in Store today in the Outdoors Department. Use Herbicides for Larger Areas. ... Smother the Daylilies. ... Tips for ControllingDaylilies. How do I get rid of weeds in my daylilies? Garden Gate editors answer spring garden questions from our readers - See the list below for specific topics we cover in this video:00:05 I struggle with... The wise daylily gardener will apply a proper cultural program which includes watering, fertilizing, mulching, possibly spraying, grooming, controlling weeds, and sanitation. Daylily care & planting. How to plant: Daylilies grow in clumps that are comprised of fibrous tuber-like roots. Plants are available as container grown or bare root daylily bulbs. Many gardeners find their daylily is out of control and panic, but pulling them takes patience; these are not your typical landscape plants.