WebRust, caused by the fungus Puccinia helianthi Schwein., is one of the most devastating diseases of sunflower (Helianthus annuus L.), affecting global production. The rust R gene R 11 in sunflower line HA-R9 shows broad-spectrum resistance to P. helianthi virulent races and was previously mapped to an interval on sunflower chromosome 13 encompassing … WebAug 17, 2024 · Sunflowers (Helianthus annus) belong to the Asteraceae plant family. The flowers of this plant are remarkably large and tall, standing on upright, hairy, leafy stems. …
Top 10 Sunny Sunflower Varieties to Grow - Birds and Blooms
WebJul 16, 2024 · 6 Plants Birds Love 1. ‘Pacino’ sunflower This sunflower mix stays small — just 12 to 16 inches tall when grown in a pot, a little taller in the garden. A good branching habit produces numerous 5-inch-diameter … WebDec 25, 2024 · 1) Suntastic Yellow ( Helianthus annuus ‘Suntastic Yellow with Black Center’) It is an annual dwarf variety showcasing big vibrant yellow blossoms and coffee-brown to black centers. This plant usually grows in bunches of around 5 to 8 flowers, and each flower measures up to 15 cm. Height/Width (cm): 30-60/20-25. sub art worksheet
sunflower Description, Uses, & Facts Britannica
WebHelianthus ( / ˌhiːliˈænθəs /) [3] is a genus comprising about 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. WebNov 20, 2024 · Sunflowers should be planted several weeks after the last frost. This could be as early as March in south Georgia or the beginning of May in north Georgia. Ideally, the soil temperature should be at least 60 °F prior to planting. When planting in rows, space seeds about 6 inches apart in the row, and plant 1 to 2 inches deep. WebDec 15, 2024 · The easily recognizable sunflower (Helianthus) has a long history in North America. Early inhabitants of the continent used the easy-to-grow plant as a source of food products. Sunflowers... subaru 0 20w synthetic oil