Difference between revisions of "Helianthus × laetiflorus"

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(Created page with '{{Inc| Helianthus scaberrimus, Ell. (H. rigidus, Desf. H. missiouriensis, Schwein.). St. 1-3 ft. high (rarely 5-8 ft.), strict, sparingly branched, rough or hairy: lvs. 6-12 in. …')
 
 
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{{SPlantbox
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|familia=Asteraceae
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|genus=Helianthus
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|species=× laetiflorus
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|common_name=hybrid sunflower
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|habit=herbaceous
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|Min ht metric=cm
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|features=flowers
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|flowers=yellow
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|Temp Metric=°F
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|image=Upload.png
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|image_width=240
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}}
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Describe the plant here...
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{{Inc|
 
{{Inc|
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Helianthus scaberrimus, Ell. (H. rigidus, Desf. H. missiouriensis, Schwein.). St. 1-3 ft. high (rarely 5-8 ft.), strict, sparingly branched, rough or hairy: lvs. 6-12 in. long, oblong to ovate-lanceolate, firm, thick, rough- hairy, entire or slightly toothed: fls. 2 ½ -4 in. wide, showy, long-stalked; rays numerous, about 1 ½ in. long; disk sometimes yellow at first, turning brown. Aug.-Oct. Minn, to Ill., Ga., and Texas prairies. B.R. 508 (as H. atrorubens). B.M. 2020 (as H. diffusus); 2668 (H.atrorubens). Gn. 27, p. 68. G. 3:391; 17: 544 (both as Harpalium rigidum).—After H. decapetalus this species is one of the best perennial sunflowers. It varies under cult, chiefly in the direction of doubling and in lengthening the blooming period. Some of the best garden varieties are aestivalis, grandiflorus, semiplenus and Miss Mellish.
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Helianthus scaberrimus, Ell. (H. rigidus, Desf. H. missiouriensis, Schwein.). St. 1-3 ft. high (rarely 5-8 ft.), strict, sparingly branched, rough or hairy: lvs. 6-12 in. long, oblong to ovate-lanceolate, firm, thick, rough- hairy, entire or slightly toothed: fls. 2 ½ -4 in. wide, showy, long-stalked; rays numerous, about 1 ½ in. long; disk sometimes yellow at first, turning brown. Aug.-Oct. Minn, to Ill., Ga., and Texas prairies.—After H. decapetalus this species is one of the best perennial sunflowers. It varies under cult, chiefly in the direction of doubling and in lengthening the blooming period. Some of the best garden varieties are aestivalis, grandiflorus, semiplenus and Miss Mellish.
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==Cultivation==
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===Propagation===
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===Pests and diseases===
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==Species==
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<!--  This section should be renamed Cultivars if it appears on a page for a species (rather than genus), or perhaps Varieties if there is a mix of cultivars, species, hybrids, etc    -->
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==Gallery==
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{{photo-sources}}<!-- remove this line if there are already 3 or more photos in the gallery  -->
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<gallery>
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Image:Upload.png| photo 1
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Image:Upload.png| photo 2
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Image:Upload.png| photo 3
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</gallery>
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==References==
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*[[Standard Cyclopedia of Horticulture]], by L. H. Bailey, MacMillan Co., 1963
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<!--- xxxxx  *Flora: The Gardener's Bible, by Sean Hogan. Global Book Publishing, 2003. ISBN 0881925381  -->
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<!--- xxxxx  *American Horticultural Society: A-Z Encyclopedia of Garden Plants, by Christopher Brickell, Judith D. Zuk. 1996. ISBN 0789419432  -->
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<!--- xxxxx  *Sunset National Garden Book. Sunset Books, Inc., 1997. ISBN 0376038608  -->
  
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==External links==
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*{{wplink}}
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{{stub}}
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__NOTOC__

Latest revision as of 14:52, 20 October 2009


Upload.png


Plant Characteristics
Habit   herbaceous
Cultivation
Features: ✓ flowers
Flower features: ❀ yellow
Scientific Names

Asteraceae >

Helianthus >

× laetiflorus >


Describe the plant here...


Read about Helianthus × laetiflorus in the Standard Cyclopedia of Horticulture 

Helianthus scaberrimus, Ell. (H. rigidus, Desf. H. missiouriensis, Schwein.). St. 1-3 ft. high (rarely 5-8 ft.), strict, sparingly branched, rough or hairy: lvs. 6-12 in. long, oblong to ovate-lanceolate, firm, thick, rough- hairy, entire or slightly toothed: fls. 2 ½ -4 in. wide, showy, long-stalked; rays numerous, about 1 ½ in. long; disk sometimes yellow at first, turning brown. Aug.-Oct. Minn, to Ill., Ga., and Texas prairies.—After H. decapetalus this species is one of the best perennial sunflowers. It varies under cult, chiefly in the direction of doubling and in lengthening the blooming period. Some of the best garden varieties are aestivalis, grandiflorus, semiplenus and Miss Mellish.


The above text is from the Standard Cyclopedia of Horticulture. It may be out of date, but still contains valuable and interesting information which can be incorporated into the remainder of the article. Click on "Collapse" in the header to hide this text.


Cultivation

Propagation

Pests and diseases

Species

Gallery

If you have a photo of this plant, please upload it! Plus, there may be other photos available for you to add.

  • photo 1

  • photo 2

  • photo 3

References

External links


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