Saturday, 22 September 2012

Helianthus annuus



Name:  Helianthus annuus
Common Name:
 Sunflower
Family:
Asteraceae
        Deciduous             Evergreen             Shrub            Ground Cover              
    x   Annual         Coniferous             Tree             Climber          x   Herbaceous                     
        Perennial
Habit:
Upright
Hard. Zone: 
 Zone 9 USDA
(-7 to -1C)
Mature Size:
Height-3-5m. x Spread 1.5-2.0m.

Leaf: Form-Simple,Texture-soft flexible, Venation-Pinnate, Surfaces-Rugose(top),Pubescent(bottom),shape-Heart

Fall/Winter Color:
Flower turns from white to black
       Leaf Arr.        Opposite        Alternate         Whorled    x    Spiraled         
         Clustered         Basal

Flowers: Composite, Corolla shape-Rotate,stellate,Colour-Showy, White, Yellow, Orange, Dark red


Infl.: Floriferous, Head(capitulum)

Jan.     Feb.      March.      April.      May.      June.    (July.    August.      [Sept.      Oct.)]     Nov.      Dec.  (Flower time at peak) [Fruiting time]
Water Use:
       High          Low

Soil:
       Rich       Lean      
   x   Well-drained

Exposure:
    x   Sun       Semi-shade                   
       Shade
Landscape uses:
Food source, attracts beneficial insects and birds, wildlife food, Perennial border

Limitations:  Staking may be required, susceptible to canker, fungal leaf spot, powdery mildew, Rust
Other Features: 

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