Agave havardiana
Family: asparagaceae
Common name(s): Hardy Century Plant
Hardiness ratings: USDA zone 5~7b - 9~10 
General resources
Links for Agave havardiana
- Annie's Annuals (on archive.org) - Catalog page with photo, basic horticultural information, and noteworthy features. (zone 6b-10)
 (1 photo)
- Dave's Garden PlantFiles - Profile page with horticultural basics, and member-contributed photos and comments. (zone 6b-10) (10 photos)
- Garden.org - Community-assembled plant profile (6 photos)
- Lady Bird Johnson Wildflower Center - Plant description and characteristics with notes on distribution, culture, and propagation. (22 photos)
- 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 7-10) (2 photos)
- Native Plant Society of Texas - Plant profile with basic characteristics, some horticultural information, and a distribution map within Texas. (6 photos)
- Plant Delights Nursery - Catalog page with photo, horticultural basics, and descriptive blurb. (zone 5-9) (1 photo). Also a page for 'Big Bend Giant'.
- Rob's Plants - Plant profile with basic horticultural information and often personal observations. Also seed germination records. (zone 6b-10) (2 photos)
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