Description
Sensation Mixed Penstemon Seeds 6575.
Vibrant Snapdragon-Like Spikes with Glossy Evergreen Foliage.
Sensation Mixed Penstemon (Penstemon hartwegii), also known as Hartweg’s Beardtongue, produces an abundance of colourful, tubular, snapdragon-like flowers in rich shades of red. Borne along tall, elegant flower spikes reaching 90 cm in height, the blooms appear from late spring through late August. Framed by neat, glossy, evergreen foliage, this variety is a favourite for attracting hummingbirds and pollinators to sunny garden spaces. In Zone 5 and 6 gardens, it performs as a tender perennial with protective winter mulch, while in colder regions, it is best grown as a heavy-blooming annual.
Quick Seed Details
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Product Code: 6575
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Botanical Name: Penstemon hartwegii ‘Sensation Mix’
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Type: Open-Pollinated Tender Perennial (Often Grown as an Annual)
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Hardiness: Zone 5–6 (with winter protection/mulch)
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Height: 90 cm
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Plant Spacing: 30 cm
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Bloom Time: Late Spring through Late August
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Light Requirement: Full Sun
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Soil Preference: Rich, well-drained soil
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Germination: 10–15 days at 18–20°C
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Seed Count: Approx. 250 seeds per packet (2,300 seeds per gram)
What you need to know to Plant & Grow
Penstemon responds well to early indoor starting or direct autumn sowing.
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Indoor Sowing: Start seeds indoors in a quality soilless growing medium in mid-March. Maintain a temperature of 18 to 20°C for the 10 to 15 day germination period. Once sprouted, grow on under lights before hardening off and transplanting outdoors after the danger of spring frost has passed.
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Outdoor Direct Sowing: Direct sow seed into garden beds in late autumn for natural overwintering and early summer bloom production.
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Garden Spacing: Space plants 30 cm apart in a sunny site with rich, well-drained soil.
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Winter Protection: In regions with severe cold or unreliable snow cover, apply a thick protective mulch over the root zone in late autumn to overwinter plants successfully.
Why Sensation Mixed Penstemon Seeds belong in Your Garden
If you want dramatic vertical height and vivid red, snapdragon-like blossoms that bloom continuously through late summer, Sensation Mixed Penstemon is an unbeatable selection. Its glossy foliage and pollinator-friendly flower spikes make it an essential focal point for borders, cottage gardens, and cut-flower arrangements.
