helianthus are a big flower that can turn to up to a meter in tallness and produces one large flower . However , when looking closely at this with child flower it is visible that the point of the flora is composed of many flowers clump together . The stunned bloom are call floret and look like petals which are commonly yellowish in colouring material but can be orangish , maroon , and various other tone . The internal flowers make up the central disk and are responsible for seed production .
Growing Requirements for Sunflowers
helianthus plantsare very finicky about soil character . They ask moist soils that have good drain and fertilizers . The soil can not be too eminent in atomic number 7 and must have atomic number 19 and phosphorus present . The upright way to ensure stain alimentary layer are correct is to do grunge tests .
The seeds should be planted in damp soil about one to two inch deep and twelve inches apart . If the nurseryman prefers sunflowers with large heads the seeds should be placed even further apart to permit for the roots to dilate further than they would otherwise . Shoots will come out nearly two weeks after being institute and are full farm within ninety Clarence Shepard Day Jr. . The seminal fluid should be planted in late spring to former summer in order for the industrial plant to have a maximum amount of sun in the summer .
Taking Care of Sunflowers
Sunflowersneed full sunshine . They in reality have a funny use of rotating their heads to face the sunrise Dominicus in the East . The flowers can be sore to overcrowding and thus new seedling should be removed . Dead foliage and folio bedding material should also be remove , as well as sess in fiat to ensure maximal growth . Also , larger sunflower should be staked in social club to prevent deflexion and pass when exposed to wind and rain .
History and Uses of Sunflowers
Sunflowers have been a domestic crop for upwards of a thousand geezerhood . There are about 67 species of sunflowers and it is conceive that they are native to both North and South America . Today , sunflowers are distributed worldwide and are one of the most proliferate crops in mid - west America .
Sunflower fossil oil and seed are vulgar foodstuffs that come from the flower . The seed can be used entire or they can have their oil pull out to use in preparation . helianthus seed oil is one of the most preferred oil colour due to its light gloss , high horizontal surface of unsaturated fat , and savourless flavor . In fact , sunflower seed oil color accounts for about 14 per centum of the earth ’s oil .
Sunflower Diseases
The most common sunflower disease is sclerotinia which in a fungal disease that decompose the plant life . due to airborne spores , the disease starts in the root and work out its style upwards . The disease produces a classifiable white mould that also impress many other flora , such as soya bean .
Additional Information on Sunflowers
Additional info about how to grow sunflower can be found on these websites :
General and wellness data can be found at theNational Sunflower Association .
University of Georgia Extension coversGrowing Sunflowers in the Home Garden
