Listing ID #4162588
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Contact SupplierHelianthus annuus a annual herb with erect, rough, hairy stem, 2.7mt. high; leaves 4-12 in. long, alternate, long-stalked, broadly ovate to cordate, coarsely toothed, roughly pubescent on both sides; flower heads usually 3-6 in. wide, but attaining 12-24 in. width under cultivation floweres single or double, teerminal on the main axis and branches; receptacles flat, more frequently dilated and convex; ray florets yellow: surrounding a brown purple centre of disc florets; seeds (achenes) cylindrical, obovoid-compressed, 3/8 in. long and ¼ in. broad, white, black or striped grey and black; pappus falling early. It has drought tolerant. It grows in semi-shade. It can be propagated by seeds.