![]() ![]() Remember that organic mulches thin out over time, so you will need to add another layer each spring.Ī final solution involves chemical control. Good examples are garden compost, wood chips, shredded bark or other organic matter. After removing purple deadnettle plants, you should spread a 2- to 3-inch layer of mulch. Mulch could be an effective control because it will prevent the seed from sprouting. Mulch can help to keep the deadnettle at bay It is a process that will have to be repeated each year because of the seed hidden in the soil from previous seasons. You want to do this before the plant produces seed this year. ![]() Gardeners and homeowners may prefer to have weed-free venues, in which case purple deadnettle can be controlled by hand weeding and cultivation. If the deadnettle has just started to appear in your garden, you can remove the plant by grasping the stem and pulling out the root system. Turf grass, such as golf courses, compete with deadnettle.Ĭontrol depends on the location and the intensity of the deadnettle. It serves as a ground cover in most farm fields and does not compete with summer agricultural crops, such as corn and soybeans, although it could reduce growth of alfalfa or clover hayfields, and in pastures where livestock has grazed. One plant can produce thousands of seeds which drop to the ground and can remain dormant in the soil for several years. This wily weed goes to seed before mowing season. These usually are smaller than an inch and have serrated edges. Its small purple flowers are enhanced by the leaves that start out green at the base but turn purple toward the top. The wily weed goes to seed before mowing seasonĪn aggressive grower, the plant has a unique square stem and grows up to 16 inches tall. ![]()
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