Pineapple Weed: A Common and Invasive Broadleaf Weed
Introduction
Pineapple weed, also known as disc mayweed, is a broadleaf weed that is native to Europe and Asia but has become invasive in North America. It is a member of the aster family and is closely related to daisies and sunflowers. Pineapple weed gets its name from the small, yellow, pineapple-shaped flowers that it produces.
Identification
Pineapple weed is a low-growing, herbaceous plant that typically reaches a height of 6 to 12 inches. It has deeply lobed leaves that are arranged in a rosette at the base of the plant. The leaves are covered in fine hairs, which give them a slightly fuzzy appearance.
Reproduction
Pineapple weed reproduces only by seeds. The seeds are small and black, and they are dispersed by wind, water, and animals. The seeds can remain viable in the soil for several years, which makes pineapple weed a difficult weed to control.
Habitat
Pineapple weed is a very adaptable plant that can grow in a wide range of habitats. It is most commonly found in disturbed areas, such as roadsides, parking lots, and vacant lots. It can also be found in lawns, gardens, and agricultural fields.
Impact
Pineapple weed is a competitive plant that can quickly crowd out other vegetation. It can also produce allelopathic chemicals, which inhibit the growth of other plants. Pineapple weed can reduce the yield of crops and make it difficult to maintain lawns and gardens.
Control
Pineapple weed can be difficult to control, but there are a few methods that can be effective.
- Prevention: The best way to control pineapple weed is to prevent it from establishing in the first place. This can be done by keeping your lawn and garden free of weeds and by avoiding disturbing the soil.
- Cultural control: Cultural control methods, such as mowing and mulching, can help to suppress the growth of pineapple weed. Mowing should be done frequently, and the clippings should be removed from the lawn. Mulch can help to smother pineapple weed seedlings and prevent them from establishing.
- Chemical control: Herbicides can be used to control pineapple weed, but they should be used with caution. Some herbicides can damage desirable plants, so it is important to read and follow the label carefully.
Conclusion
Pineapple weed is a common and invasive weed that can be difficult to control. However, by following the tips above, you can help to reduce the impact of pineapple weed on your lawn and garden.
Additional Information
- Pineapple weed is also known as chamomile, stinking chamomile, and wild chamomile.
- The leaves and flowers of pineapple weed have a strong, pineapple-like aroma.
- Pineapple weed is a popular herb in traditional medicine. It is used to treat a variety of ailments, including indigestion, anxiety, and insomnia.
- Pineapple weed is a good source of vitamins and minerals, including vitamin C, potassium, and calcium.
- Pineapple weed is a larval host plant for the painted lady butterfly.
