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French marigold: repels whiteflies, kills nematodes [2] Garlic: repels root maggots, [2] cabbage looper, Mexican bean beetle, and peach tree borer. Geranium: repel leafhoppers, the corn earworm, and the Small White [3] Hyssop: repels the cabbage looper and the Small White [3] Larkspurs: repel aphids [3] Lavender
Rhizoctonia solani root rot on corn roots, magnified 0.63X. Damping off can be prevented or controlled in several different ways. Sowing seeds in a sterilized growing medium can be effective, although fungal spores may still be introduced to the medium, either on the seeds themselves or after sowing (in water or on the wind).
Tithonia diversifolia is a species of flowering plant in the family Asteraceae that is commonly known as the tree marigold, [2] Mexican tournesol, Mexican sunflower, Japanese sunflower or Nitobe chrysanthemum. It is native to Mexico and Central America but has a nearly pantropical distribution as an introduced species. [1]
This week's Master Gardener Q&A tackles which annual flowers can be seeded in June, mums and how to save on potting soil.
Marigolds are regarded as one of the easiest plants to grow. They are very hardy, and may survive minor frosts. The plant is well suited to a mostly sunny position, and fairly well draining soil. Overly fertile soil may cause the plants to become bushy and produce less flowers.
Mechanisms that have been scientifically verified include using strongly aromatic plants to deter pests; using companions to hide crops from pests; providing plants as nurseries for beneficial insects including predators and parasitoids; trap cropping; [6] and allelopathy, where a plant inhibits the growth of other species.
Tagetes (/ t æ ˈ dʒ iː t iː z /) is a genus [3] of 50 species of annual or perennial, mostly herbaceous plants in the family Asteraceae. They are among several groups of plants known in English as marigolds. The genus Tagetes was described by Carl Linnaeus in 1753. [4] [5]
Tagetes minuta is a tall upright marigold plant from the genus Tagetes, with small flowers, native to the southern half of South America. [2] Since Spanish colonization, it has been introduced around the world, and has become naturalized in Europe, Asia, Australasia, North America, and Africa. [2] Tagetes minuta has numerous local names that ...
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