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First year flowering, heavy blooming, 1.5-2 foot tall perennial plants, produce radiant flowers from June to September. Most will have white throats. Leaves are glossy, narrow, and attractive. These low maintenance plants are outstanding massed in the landscape, or use in mixed borders and containers. Winter hardy to zone 5. 'Sunburst' series Penstemons grow beautifully with 'Globetrotter' Agastache, 'Sterntaler' Coreopsis, and 'Magnus Superior' Echinacea.
Brilliant mix of flowers in shades of pink, red, lavender and purple, most will have white throats.
Large flowers on vigorous, upright, heat tolerant, self-cleaning, first year flowering, 14-18 inch tall plants. Flowers from late spring or early summer, and continues to provide color and cut flowers all summer. Terrific in mixed borders or containers, and stunning when massed. Winter hardy to zone 7, can be grown as an annual everywhere.
Brilliant deep scarlet-red flowers.
Wine-red flowers with white throats.
Flowers first year, many spikes of large soft lavender pink summer blooms. Butterfly and hummingbird magnets, superb cut flowers. Leaves green in spring, transform into shades of bronze and red in summer and fall. Best color in full sun. Easy to grow, 3 foot tall, drought tolerant plants are winter hardy to zone 3. Grows nicely with 'Milkmaid' Butterfly Weed, 'Sterntaler' Coreopsis, 'Amber Wheels' Gaillardia, and 'Indian Spring Mix' Hollyhock.
First penstemon to win an All America Selections Award. Large red tubular flowers with white throats attract butterflies and hummingbirds, appear freely summer until frost. Vigorous, 16-24 inch tall plants are the best branching penstemon from seed, one of the most compact. High performance in mixed borders or containers. Winter hardy perennial to zone 6, can be grown as an annual everywhere.
Vibrant mix of pink, red and violet flowers, 16 inch tall evergreen perennial blooms July to September. Flowers first year when started early. Winter hardy to zone 3.
Sow in cell packs or flats, press into soil, barely cover. Kept at 60-70° F., germination in 14-30 days. See Starting Seeds for more information.
Comments: Penstemon plants prefer full sun, or part sun in hottest climates. Need little to moderate water once established. Avoid overly fertile soil. 'Navigator Mix' and 'Rondo' Penstemons especially tolerant of high heat and humidity. Flowers attract butterflies and hummingbirds. Plants are deer resistant.