Common Sunflower (Helianthus annuus L.)By David Taylor. This sunflower is prized for the brilliant blue, purple, black or red dye that is made from the hulls and used to dye wool, cotton and baskets, as well as for making ceremonial body paint. Tall, ornamental cultivars have more numerous smaller flowers, whereas cultivars for oil extraction are shorter and have a single flower head. Introduction. More information about modern web browsers can be found at http://browsehappy.com/.
Observation Search (1397 records) Plant Characteristics. D. Closeup of stem showing hairs. Seeds contain 20-40% protein and 40-65% oil, comprising up to 80% linoleic acid (C18:2). The species is a somewhat weedy plant that is now commonly seen growing along roads, fences, fields and in waste areas west of the Mississippi River and is the state flower of Kansas. 39 to 118 inches) tall (cultivated forms often taller). Native American people grew sunflowers as a crop from Mexico to Southern Canada. Plant seed in the garden after last frost date. Disc flowers are dark brown to purple.
[7] The species H. annuus typically grows during the summer and into early fall, with the peak growth season being mid-summer.
Helianthus 'Happy Days' (Perennial Sunflower), Helianthus salicifolius 'First Light' (Willow-Leaved Sunflower), Helianthus salicifolius 'Low Down' (Willow-Leaved Sunflower), Helianthus annuus 'Claret' (Common Sunflower), Helianthus annuus 'Teddy Bear' (Common Sunflower), Pennisetum orientale (Oriental Fountain Grass), Anthemis tinctoria 'E.C Buxton' (Golden Marguerite), Eryngium planum 'Blue Glitter' (Flat Sea Holly), Allium sphaerocephalon (Drumstick Allium), Want Garden Inspiration? Helianthus annuus (sunflower); flower. [19], There are many species recognized in the genus:[21][22], The following species were previously included in the genus Helianthus. [16], The Journal of Environmental Management has analyzed the impact of various nitrogen-based fertilizers on the growth of sunflowers. wide (45-90 cm). Seed should normally be planted 3-8 cm deep, depending on cultivar. Photo by David D. Taylor. Single heads are borne at the end of branches. Species plants feature 3-6 wide sunflower… Rust, leaf fungal spots and powdery mildew are somewhat common. The disk flowers are typically darker yellow compared to the ray flowers. Each head generally has 13 to 30 ray flowers that are 2.5 to 5 centimeters (1 to 2 inches) long, and 150 to more than a thousand-disc flowers.
form a strategic partnership called N.C. One or more of the features that are needed to show you the maps functionality are not available in the web browser that you are using. The 1000-kernel weight varies from 50 g to many times this. A frost-free period of 120 days is usually necessary for commercial crops. Teeth on leaf margins range from inconspicuous to clearly present. Guide to cultivated plants, CABI.vii-xi + 516 pp. [6] This and other species, notably Jerusalem artichoke (H. tuberosus), are cultivated in temperate regions and some tropical regions as food crops for humans, cattle, and poultry, and as ornamental plants. Some have most or all of the large leaves in a rosette at the base of the plant and produce a flowering stem that has leaves that are reduced in size. The entire head is 4.5 to 10.5 centimeters (1.8 to 4.1 inches) wide, much wider in cultivated forms.
It is in flower from July to September, and the seeds ripen from September to October. Further details may be available for individual references in the Distribution Table Details section which can be selected by going to Generate Report. Please consider upgrading your browser to the latest version or installing a new browser. The current method has been shown to have positive environmental impacts. Native Range: United States and Central America, Bloom Description: Yellow, red, mahogany, bicolor rays with brown to purple center disk. vi + 601 pp. Helianthus species are used as food plants by the larvae of many lepidopterans.
To obtain high seed yields, application of fertilizer is necessary. These showstoppers make outstanding cut flowers and are valuable additions to beds and borders. Washington DC 20250-1103, Pollinator-Friendly Best Management Practices, Native Plant Material Accomplishment Reports, Fading Gold: The Decline of Aspen in the West, Wildflowers, Part of the Pagentry of Fall Colors, Tall Forb Community of the Intermountain West. Sunflower development is classified by a series of vegetative stages and reproductive stages that can be determined by identifying the heads or main branch of a single head or branched head. 1 Acanthaceae - Aizoaceae. Leaves are usually alternate (lower leaves opposite), ovate, cordate, with three main veins, 10-30 cm long, 5-20 cm wide, margin serrate, and carried on long petioles. The primary threats are industrial forestry and pine plantations in Alabama, Georgia, and Tennessee. The brown or purplish disc florets are spirally arranged, flowering from the outer to the centre.
Bozeman, Montana, USA. This tracking of the sun in young sunflower heads is called heliotropism. Attractive to bees, their central disk gives way to sunflower seeds that provide food for birds in fall and winter. Guide to the naturalized and invasive plants of Eastern Africa, [ed. Join now and start creating your dream garden! Seed is compressed, flattened oblong, the top truncated and base pointed, 10-25 mm long, 7-15 mm wide. Variability is seen among the perennial species that make up the bulk of those in the genus. Except for three South American species, the species of Helianthus are native to North America and Central America. Public Domain - Released by Ryan Kaldari (Kaldari)/via wikipedia, Sunflower seed production (2008) 50 MT (F), Sunflower seed production (2008) 11,000 MT (F), Sunflower seed production (2008) 7,000 MT (F), Sunflower seed production (2008) 21,483 MT, Sunflower seed production (2008) 32,310 MT, Sunflower seed production (2008) 5,128 MT, Sunflower seed production (2008) 885,560 MT, Sunflower seed production (2008) 100,000 MT, Sunflower seed production (2008) 10,000 MT (F), Sunflower seed production (2008) 190,000 MT, Sunflower seed production (2008) 8,000 MT (F), Sunflower seed production (2008) 23,000 MT (*), Sunflower seed production (2008) 16,000 MT (F), Sunflower seed production (2008) 16,537 MT, Sunflower seed production (2008) 1,850,000 MT (*), Sunflower seed production (2008) 1,112,000 MT, Sunflower seed production (2008) 19,000 MT (F), Sunflower seed production (2008) 25,300 MT, Sunflower seed production (2008) 0 MT (F), Sunflower seed production (2008) 185,750 MT, Sunflower seed production (2008) 53,000 MT, Sunflower seed production (2008) 350,000 MT (F), Sunflower seed production (2008) 603,894 MT, Sunflower seed production (2008) 21,643 MT (F), Sunflower seed production (2008) 3,274 MT, Sunflower seed production (2008) 23,764 MT, Sunflower seed production (2008) 992,000 MT, Sunflower seed production (2008) 12,000 MT (*), Sunflower seed production (2008) 2,500 MT, Sunflower seed production (2008) 79,658 MT, Sunflower seed production (2008) 22,000 MT (*), Sunflower seed production (2008) 1,300,710 MT, Sunflower seed production (2008) 119,900 MT, Sunflower seed production (2008) 60,993 MT, Sunflower seed production (2008) 1,607,977 MT, Sunflower seed production (2008) 48,900 MT, Sunflower seed production (2008) 15,600 MT, Sunflower seed production (2008) 1,468,100 MT, Sunflower seed production (2008) 260,927 MT, Sunflower seed production (2008) 371,935 MT, Sunflower seed production (2008) 4,669 MT, Sunflower seed production (2008) 16,200 MT, Sunflower seed production (2008) 1,169,940 MT, Sunflower seed production (2008) 7,350,240 MT, Sunflower seed production (2008) 454,282 MT, Sunflower seed production (2008) 192,346 MT, Sunflower seed production (2008) 873,800 MT, Sunflower seed production (2008) 12,300 MT, Sunflower seed production (2008) 6,526,000 MT, Sunflower seed production (2008) 112,200 MT, Sunflower seed production (2008) 1,552,570 MT, Sunflower seed production (2008) 73,000 MT, Sunflower seed production (2008) 4,646,065 MT, Sunflower seed production (2008) 191,317 MT (F), Sunflower seed production (2008) 145,659 MT, Sunflower seed production (2008) 7,607 MT, Sunflower seed production (2008) 270 MT (F), Sunflower seed production (2008) 200,000 MT (*), Sunflower seed production (2008) 54,200 MT.
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