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brassicas like cabbage and broccoli: Its flowers attract pollinators: Leaves can be eaten: Used in traditional herbal medicine to "cleanse the blood" and contains micronutrients that may help with gout: Do not grow around tomato plants, clover is a legume that makes the soil too fertile. Tomato plants need a mild nitrogen deficit to set fruit
Pepper plants like high humidity, which can be helped along by planting with some kind of dense-leaf or ground-cover companion, like marjoram and basil; pepper plants grown together, or with tomatoes, can shelter the fruit from excess sunlight, and raise the humidity level.
Dig or pull weeds by hand. You can weed at any time of the year, but the best time to pull weeds is after it has rained, when the soil is moist and loose. Use a pre-emergent and post-emergent product.
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Crow garlic, like any Allium, masks scents from pest insects, protecting neighboring plants [citation needed]. Many weeds protect nearby plants from pest insects.Some beneficial weeds release volatile organic compounds that mask the scents of nearby plants, as with alliums and wormwood; others imitate the pheromones of pest insects and confuse them, as with ground ivy, oregano, and other mints.
In 2014, North Dakota State University's "ND Weed Control Guide" selected Amaranthus palmeri, as "weed-of-the-year" to raise awareness about its "potentially devastating impact." [ 19 ] : 5 In 2015, Palmer amaranth was chosen as "weed-of-the-year" for the second year in a row as a "proactive approach to prevent Palmer amaranth establishment in ...
It is an annual or short-lived perennial herb growing a hollow stem up to 70 centimeters (28 in) tall. The root system has a series of tuber-like parts at the base of the stem. 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.
This species was first formally described in 1753 by Carl Linnaeus who gave it the name Cassia obtusifolia in Species Plantarum. [4] [5] In 1979, Howard Samuel Irwin and Rupert Charles Barneby transferred the species to the genus Senna as S. obtusifolia in the Memoirs of the New York Botanical Garden.