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Family: verbenaceae
Common name(s): purple-top vervain
Hardiness ratings: USDA zone 7 - 9~11 
General resources
Links for Verbena bonariensis
- Alabama Plants - Description and photographs of botanical features, with notes about habitat and native status.
 (6 photos)
- All Things Plants - Community-assembled plant profile (2 varieties in database) (36 photos)
- Annie's Annuals - Catalog page with photo, basic horticultural information, and noteworthy features. (additional cultivars listed in catalog) (zone 7-11) (3 photos)
- BBC Gardening - Plant profile with horticultural details and garden uses. (1 photo)
- Dave's Garden PlantFiles - Profile page with horticultural basics, and member-contributed photos and comments. (zone 7-10) (36 photos)
- Denver Botanic Gardens - Description, native range, and cultural requirements. (additional pages for other varieties) (zone 7) (7 photos)
- Digging Dog Nursery - Catalog page with descriptive information (zone 7)
- Floridata - Illustrated informative profile page with notes on culture, usage, and noteworthy features. (zone 7-11) (2 photos)
- Heritage Perennials - Profile with description and horticultural details. (zone 7-9) (1 photo)
- Illinois Wildflowers - Informative illustrated page with description and cultivation details, also covering range and faunal associations. (3 photos)
- Iris' Garden - Gardener in the Netherlands presents a photo of this plant, with basic horticultural information. (1 photo)
- 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. (zone 7-11) (4 photos). Also a page for 'Buenos Aires'.
- North Carolina State University factsheet - Plant profile with horticultural details and comments (zone 7-11a) (12 photos)
- Paghat's Garden - Illustrated articles by a gardener in the Pacific Northwest, with background and personal observations. (3 photos)
- Plant Delights Nursery - Catalog page with photo, horticultural basics, and descriptive blurb. (1 photo)
- Rob's Plants - Plant profile with basic horticultural information and often personal observations. Also seed germination records. (3 photos)
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