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The plant takes the form of a large tuft of onion-like rounded hollow leaves up to 30 centimeters (12 in) long. The inflorescence is a panicle with widely spaced flowers. Each flower is 5 to 12 millimeters wide with six tepals which are generally white or very pale pink with a neat central longitudinal stripe of brown to reddish-purple. The ...
[6] [7] Since its introduction to Britain in 1878 it has spread slowly, and was first recorded in the wild in 1917 in west Cornwall (UK) and County Leitrim (Ireland), often as a greenhouse weed. [8] Selaginella kraussiana is listed on the New Zealand National Pest Plant Accord since it is an invasive species. It is common in many parts of New ...
Centaurea diffusa basal rosette, first year plant. Diffuse knapweed is an annual or biennial plant, generally growing to between 10 and 60 cm in height.It has a highly branched stem and a large taproot, as well as a basal rosette of leaves with smaller leaves alternating on the upright stems.
Onions, in particular, produce a sulfur product that acts as a lacrimator, or a substance that causes tearing: “This volatile chemical escapes from the damaged onion into the air, and lands in ...
Allium vineale (wild garlic, onion grass, crow garlic or stag's garlic) is a perennial, bulb-forming species of wild onion, native to Europe, northwestern Africa and the Middle East. [2] The species was introduced in Australia and North America , where it has become an Invasive species .
Companion planting of carrots and onions. The onion smell puts off carrot root fly, while the smell of carrots puts off onion fly. [1]Companion planting in gardening and agriculture is the planting of different crops in proximity for any of a number of different reasons, including weed suppression, pest control, pollination, providing habitat for beneficial insects, maximizing use of space ...
A late summer- to autumn-blooming plant, [6] A. tuberosum is one of several Allium species known as wild onion and/or wild garlic that, in various parts of the world, such as Australia, are listed as noxious weeds or as invasive "serious high impact environmental and/or agricultural weeds that spread rapidly and often create monocultures". [14 ...
Nothoscordum × borbonicum, also known as honeybells, [1] fragrant false garlic [2] and onion weed, is a bulbous perennial. It has become naturalized as a nearly cosmopolitan weed . [ 3 ] The whitish flowers are sweetly scented.