Common name(s): sunflower
Hardiness ratings: USDA zone 2~4 - 11
Links for Helianthus annuus
- All Things Plants - Community-assembled plant profile (49 varieties in database) (58 photos)
- Annie's Annuals - Catalog page with photo, basic horticultural information, and noteworthy features. (3 photos)
- BBC Gardening: Helianthus annuus 'Double Shine' - Plant profile with horticultural details and garden uses. (1 photo). Also pages for 'Florenza', 'Giant Single', 'Infrared', 'Irish Eyes', 'Prado Red', 'Russian Giant', 'Sunrich Lemon', and 'Velvet Queen'.
- Central Texas Gardener - Plant of the week profile with photo and cultural information.
- Cretan Flora - Botanical description of this species native to Crete. (additional pages for other varieties) (1 photo)
- Dave's Garden PlantFiles - Profile page with horticultural basics, and member-contributed photos and comments. (73 photos)
- Denver Botanic Gardens - Description, native range, and cultural requirements. (additional pages for other varieties) (zone 2) (5 photos)
- Floridata - Illustrated informative profile page with notes on culture, usage, and noteworthy features. (zone 4-11) (3 photos)
- Illinois Wildflowers - Informative illustrated page with description and cultivation details, also covering range and faunal associations.
- John and Jacq's Garden - Informational page provided by home gardeners in Malaysia with details on culture and propagation. (zone 2-11) (12 photos)
- Kansas Wildflowers & Grasses - Plant portrait with botanical details and description (13 photos)
- Lady Bird Johnson Wildflower Center - Plant description and characteristics with notes on distribution, culture, and propagation.
- Missouri Botanical Garden - Plantfinder page for one of the plants growing at the garden, with usually one or more photos, horticultural information, and noteworthy characteristics. (8 photos). Also a page for 'Sungold'.
- Missouri Plants - Description and photographs of botanical features, with notes about habitat and native status. (5 photos)
- Native Plants of Central Texas - Photos with brief comments from University of Texas at Austin. (8 photos)
- North Carolina State University factsheet - Plant profile with horticultural details and comments (zone 2-11) (26 photos)
- Ontario Rock Garden Society - Germination information
- Paghat's Garden - Illustrated articles by a gardener in the Pacific Northwest, with background and personal observations. (4 photos)
- Rainy Side Gardeners - Plant profile compiled by two gardeners in the Pacific Northwest. Includes propagation and pruning methods, and commentary. (21 photos)
- Rob's Plants - Plant profile with basic horticultural information and often personal observations. (5 photos)
- Southwest Colorado Wildflowers - Photos and botanical information about the species/genus. (8 photos)
- Turner Photographics - Profile of wildflower of the US Pacific Northwest, with botanical description, habitat and distribution, and photo gallery.