Agastache aurantiaca: Orange Hummingbird Mint
- Description and photos of the species and several of its cultivars.
- http://botresearch.50megs.com/Agastache_aurantiaca.html

Agastache nepetoides
- Photo and horticultural data for yellow giant hyssop.
- http://www.mobot.org/gardeninghelp/plantfinder/Plant.asp?code=J220

Agastache breviflora: Arizona Hummingbird Mint
- Description and photo.
- http://botresearch.50megs.com/Agastache_breviflora.html

Agastache cana: Mosquito Plant, Hummingbirds Plant
- Photos and description of the species and one of its cultivars.
- http://botresearch.50megs.com/Agastache_cana.html

Agastache wrightii: Texas Hyssop
- Photo, description, and information on cultivation.
- http://botresearch.50megs.com/Agastache_wrightii.html

Agastache barberi: Giant Hyssop
- Description and photos of the species (also called A. pallida var. pallida) and some cultivars.
- http://botresearch.50megs.com/Agastache_barberi.html

Agastache wrightii
- Physical description, distribution, and habitat of this species. Includes list of plants seen or cited.
- http://nmrareplants.unm.edu/droplist/agawri.htm

Agastache Miscellaneous Hybrids
- Photos of several flowering Agastache hybrids in bloom.
- http://botresearch.50megs.com/Agastache_miscellaneous.html