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Helianthus maximiliani is native to the Great Plains in central North America, and naturalized in the eastern and western parts of the continent. It is now found from British Columbia to Maine, south to the Carolinas, Chihuahua, and California. The plant thrives in a number of ecosystems, particularly across the plains in central Canada and the ...
It’s a hardy perennial in Zones 3-9 and grows well in dry-to-moderate soil moisture. Plant these as a winter sowing or cold stratify them for spring planting. Swamp sunflower (H. angustifolius) .
Helianthus (/ ˌ h iː l i ˈ æ n θ ə s /) [3] is a genus comprising around 70 species of annual and perennial flowering plants in the daisy family Asteraceae commonly known as sunflowers. [ 4 ] [ 5 ] Except for three South American species, the species of Helianthus are native to North America and Central America .
Plasmopara halstedii is a plant pathogenic oomycete, capable of overwintering in soil due to survival structures called oospores. For this reason, P. halstedii is a soil borne pathogen infecting the roots of the host plant. [10] Oospores have the potential to live in soil up to 10 years, [9] while oospore germination takes 10–30 days. [11]
The common sunflower (Helianthus annuus) is a species of large annual forb of the daisy family Asteraceae. The common sunflower is harvested for its edible oily seeds, which are often eaten as a snack food. They are also used in the production of cooking oil, as food for livestock, as bird food, and as a plantings in domestic gardens for ...
A honey bee collecting nectar from an apricot flower.. The nectar resource in a given area depends on the kinds of flowering plants present and their blooming periods. Which kinds grow in an area depends on soil texture, soil pH, soil drainage, daily maximum and minimum temperatures, precipitation, extreme minimum winter temperature, and growing degre
Helianthus annuus — common sunflower; Helianthus couplandii — Coupland's sunflower; Helianthus decapetalus — thin-leaved sunflower; Helianthus divaricatus — woodland sunflower; Helianthus giganteus — tall sunflower; Helianthus maximiliani — Maximillian's sunflower; Helianthus nuttallii — Nuttall's sunflower; Helianthus pauciflorus ...
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