Osteospermum 'Avalanche'
African Daisy, Sun Daisy
Large, 3-inch, pure white, daisy flowers are profuse on this perennial groundcover for months beginning in spring. Accepts a range of soils, even clay soil. A Plant Select plant. Canopy coverage: 3 square feet.
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Papaver nudicaule
Iceland Poppy
The large, colorful, saucer-shaped flowers of Iceland Poppy are beauties in the garden, rising on slender stems above the mounding leaves. It is typically a short-lived perennial. Canopy coverage: 1 square foot.
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Papaver orientale
Oriental Poppy
Oriental Poppy blooms early in the season with spectacular flowers that can be up to 6 inches across. The plants go dormant after flowering, so plan accordingly to avoid bare spots in the border or landscape. Canopy coverage: 3 square feet.
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Pelargonium x hortorum
Garden Geranium
Geraniums are perennials typically grown as annuals in hot-summer or cold-winter regions. Plant from containers or packs in spring. These are old-fashioned plants that are grown as bedding plants, hanging baskets or even houseplants. Also look for scented geraniums, which are available in many rich fragrances.
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Penstemon baccharifolius
Rock Penstemon
Rock Penstemon grows in a clumping form. It is one of the best attractors of hummingbirds. Canopy coverage: 7 square feet.
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Penstemon barbatus
Scarlet Bugler
The tubular flowers of Scarlet Bugler are true scarlet in color, borne on lanky stems that are mostly leafless. Plant is open, somewhat sprawling. Long bloom period. Canopy coverage: 1 square foot.
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Penstemon barbatus 'Elfin Pink'
Elfin Pink Scarlet Bugler
Well-adapted to most regions of the U.S. Slightly smaller than the species. Accepts moist soil conditions better than other Beard Tongues. Canopy coverage: 1 square foot.
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Penstemon digitalis 'Husker Red'
Beard Tongue
This Penstemon puts on a show of white and sometimes soft pink flowers in late spring and into summer. Leaves are a dark maroon to purple color. Mostly trouble-free, but avoid planting in soggy soils. Canopy coverage: 3 square feet.
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Penstemon eatonii
Firecracker Penstemon
The dramatic flowering spikes of Firecracker Penstemon are profuse in spring. Plants reseed to create a naturalistic setting. Canopy coverage: 3 square feet.
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Penstemon heterophyllus
Foothill Penstemon
This California native is a large, wide-spreading and longlived Penstemon. Accepts heavy soils but prefers well-draining soils. Flowers for several months. Two popular selections are 'Electric Blue' and 'Margarita Bop'. Canopy coverage: 13 square feet.
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Penstemon linarioides
Toadflax Penstemon
Toadflax Penstemon is a low grower to less than one foot high. Leaves are narrow. Flowers form in clusters above the foliage. Drought tolerant. Canopy coverage: 1 square foot.
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Penstemon palmeri
Palmer's Penstemon
This is one of the largest Penstemons, so place it in the back of the border or combination planting. Its fragrant flowers look like large snapdragons. Well drained soil is a must. Canopy coverage: 3 square feet.
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Penstemon parryi
Parry's Penstemon
The flowering spikes of Parry's Penstemon are profuse in spring, blooming above the leaves, creating a dramatic display. This is one of the most popular Penstemons. Plants often reseed on their own to develop a naturalistic scene. Canopy coverage: 3 square feet.
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Penstemon pinifolius
Pineleaf Penstemon
The short, needlelike leaves of Pineleaf Penstemon cover the stems. Its spreading growth habit is well-suited to rock gardens and naturalistic settings. Canopy coverage: 3 square feet.
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Penstemon pseudospectabilis
Desert Beardtongue, Canyon Penstemon
This is another Penstemon to consider. Canyon Penstemon is native to elevations from 2,000 to 6,000 feet. It reseeds to continue and extend plantings. Sow seeds in fall for plants and flowers the following spring. Canopy coverage: 3 square feet.
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Penstemon spectabilis
Royal Beardtongue
Like many Penstemons, Royal Beardtongue reseeds readily. The striking flowers bloom on tall spikes, attracting hummingbirds. Canopy coverage: 1 square foot.
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Penstemon strictus
Rocky Mountain Penstemon
Rocky Mountain Penstemon produces spires of large, brightly colored, blue-purple flowers that rise above the leaves. Tolerates heavy soils but prefers rocky, sandy, well drained soil. Canopy coverage: 3 square feet.
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Penstemon superbus
Superb Penstemon
Coral Penstemon grows as a large, clumping form. Dramatic flowering spikes put on a show in spring. Plants reseed readily to help create a naturalistic setting. Canopy coverage: 7 square feet.
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Penstemon x mexicali
Mexican hybrid Penstemon
These are crosses made between Mexican and American wild Penstemons, and are Plant Select plants. Look for Red Rocks, Pike's Peak Purple, Carolyn's Hope, Shadow Mountain ('Psmyers') and Windwalker. Not fussy regarding soil type. Canopy coverage: 1 square foot.
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Perovskia atriplicifolia
Russian Sage
Russian Sage is a large, upright plant that can be used much like a deciduous shrub or large flowering perennial. A long bloomer that is easy to grow. Canopy coverage: 13 square feet.
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Phlomis cashmeriana
Himalayan Sage
Himalayan Sage is a large perennial that produces eye-catching spires of lavender-pink flowers. Leaves are fuzzy. Canopy coverage: 3 square feet.
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