The A to Z Book of Weeds and Other Useful Plants

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Also known as Fireweed, this invasive perennial looks pretty good for a weed. You can recognise it thanks to its ornamental spires from which purple flowers bloom in mid-summer. It can spread via stolons on the ground surface, as well as from seeds that grow in long pods. First, consider whether this can be done using non-chemical means such as digging out or suppressing with mulch. Where these methods are not feasible, chemical controls may need to be used. Once established, it is challenging to eliminate, so preventive measures are best with these types of weeds. Fertilize your lawn to ensure effective eradication. Alternatively, manually uproot the whole plant by hand. Crabgrass Another annual weed, crabgrass is common in grassy areas and in gardens. Scientific name: Digitaria sanguinalis Field bindweed has medicinal uses as a mild laxative and as a diuretic. It is an alternate host of the potato X virus. Biology

Notes: This plant’s large, velvety leaves are responsible for its name. In China, they still use Velvetleaf as a fibre to make nets, paper, ropes, cloth, and boat caulk. It grows in cultivated and waste ground. 43. Pigweed Also known as Bishop’s weed or Goutweed, this is a perennial weed. It has lacy flowers that bloom in summer, 45-cm stems and spring-emerging leaves. A comprehensive A to Z directory of wild plants. You’ll learn their past and present uses as food and medicine. I regularly add new plants. Dig deeply to remove roots and hand weed or hoe off any seedlings as they appear. Note that the tap root can develop in even quite young plants.The most helpful definition, perhaps, is that a weed is simply an unwanted plant — one that appears rather than grows as a result of cultivation.

Medical cannabis" is a broad term for any sort of cannabis-based medicine used to relieve symptoms. They have differently-shaped stems and leaves, with a variety of colours for the flowers, and most of them are perennial. Some weeds that grow in vines are annual, though.

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This particular weed may take more than one application to eliminate; if more than one treatment is necessary wait until the re-growing weeds have sufficient leaf area to take up the chemical.