http://www.mswn.com/Penstemons are perennial plants that have tubular flowers that magnetically attract hummingbirds to the garden. Most need full sun and excellent drainage.
Penstemons Suitable for Most Areas:
Penstemon ambiguus - Sand Penstemon
Penstemon amphorellae - Mexican Blue Penstemon
Penstemon baccharifolius - Rock Penstemon
Penstemon eatoni - Firecracker Penstemon
Penstemon palmeri - Scented Penstemon
Penstemon parryi - Parry's Penstemon
Penstemon pseudospectabilis - Canyon penstemon
Penstemon strictus - Rocky Mountain Penstemon
Penstemon superbus - Coral penstemon
Penstemon triflorus - Hill Country penstemon
Penstemon wrightii - Texas Rose Penstemon
Shrubby Penstemon Species:
Penstemon ambiguus - Sand Penstemon
Penstemon baccharifolius - Rock Penstemon
Don't Plant These Species in the Low Desert (including Phoenix):
Penstemon amphorellae - Needs cooler nights. MSN reports that it grows well in Tucson.
Penstemon palmeri - native to 4,000-6,000 feet. Best in cooler areas.
Penstemon strictus - Rocky Mountain Penstemon. Better with cooler night temperatures. Survives cold winters with good drainage.
These species are available from Mountain States Wholesale Nursery.
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