From demure, 6-inch plants to giant varieties growing 3 feet tall, annual zinnias (Zinnia elegans) provide extravagant blooms in every color of the rainbow except blue. This is hoped to be achieved by incorporating plants popular in the 1960s and 1970s, plus other features, according to ITV News.. Helianthus annuus 'Harlequin' (Sunflower 'Harlequin') will reach a height of 1.5m and a spread of 0.3m after 1-2 years. Sow seeds in humus-rich, moist, free-draining soil in a sunny position in spring, once danger of frost has passed. Sunflower trial border at RHS Harlow Carr, September 2016. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Sunflowers (Helianthus spp.) Foxgloves: From native wildflower to RHS Chelsea champions Half-hardy annuals: how to grow them from seed Flowers for beginners: growing hardy annuals from seed Height – 1½ to 10 feet (0.5 to 3 meters) depending on the species Exposure – full sun Diseases That Zinnias Can Get. Helianthus annuus , the common sunflower , is a broad annual forb of the genus Helianthus grown as a crop for ict edible oil and edible fruit ( sunflower seeds ). ... (perennial sunflower) 3. This sunflower species est used as bird food, as livestock drilling (as a meal or a silage plant), and In Some industrial applications. Ruby Sunset (1.1-1.5m): Each plant will produce 5-15 medium sized blooms per stem if pinched out, www.suttons.co.uk. Helianthus is the scientific name of what is commonly called sunflower.It is a plant that grows either as a perennial or an annual and it blooms very beautifully. The Remember Me garden is the brainchild of Cheshire-based designers Jane Bingham and Penny Hearn, who hope their garden … Never compost diseased sunflowers. The fungus develops mostly on leaves but also on stems. x DSI 218) and two parents (CMS 378 A and . Wild Helianthus is a widely branched … The spores of these diseases need a moist environment in which to prosper. Widely available. Sonja (1.1m): Small plants are well filled with side branches and produce strong-stemmed dark-centred blooms in unusual tangerine-gold-orange. Keywords: Tobacco streak virus, Necrosis Disease, Sunflower plant, Transmission, Thriphs. An innovative new garden at the Royal Horticultural Society's (RHS) Tatton Flower Show has been designed to comfort dementia sufferers. Suggested uses. Name – Helianthus Family – Asteraceae Type – perennial or annual. Architectural, Cottage/Informal, Flower Arranging, Beds and borders, Wildflower. If a sunflower dies from disease, pull it immediately and dispose of it in the trash. Once your annual sunflower dies, simply uproot the plant and knock off excess dirt from the roots. Helianthus facts listed out. Aphids on Sunflowers. In appearance, they can develop either as patches or as pustules (like septic spots), usually with a rusty-brown colour – but some are different, such as chrysanthemum white rust. Cultivation. Figures ... 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