Tall Snapdragon
Potomac Lavender Snapdragon brings sophisticated color and reliable performance to spring and fall gardens, stretching 30 to 48 inches tall with slender stems dressed in delicate lavender blooms. From seed to first flower takes 98 to 112 days, rewarding patient gardeners with months of continuous blooming from March through November in full sun. Deer leave these flowers alone, and pollinators find them irresistible, making them both a practical and beautiful choice for garden borders and cutting gardens.
Full Sun
Moderate
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48in H x 12in W
Annual
High
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These tall snapdragons thrive on moderate water and full sun, needing just about an inch per week once established. The lavender color stays vibrant across a long blooming season, and their deer resistance combined with pollinator appeal makes them equally valuable to wildlife gardeners and those looking for cut flowers that actually last in the vase. Starting seed indoors 8 to 10 weeks before your last spring frost gives you control over timing and better odds of success than direct sowing.
Potomac Lavender Snapdragon excels as a cut flower, with tall stems ideal for bouquets and arrangements. In the garden, they work beautifully in borders where their height adds vertical interest, and their pollinator-friendly blooms make them valuable in habitat gardens focused on supporting bees and butterflies.
Start seeds indoors 8 to 10 weeks before your last spring frost in containers kept at 60 to 70°F. Chill seed in the refrigerator for 2 days before sowing to improve germination. Sow thinly on the surface and lightly press in without covering, as the seeds require light to germinate and will sprout in 5 to 14 days. Use a seed germination mix with added vermiculite to prevent fungal problems, and water only from below by setting containers in a tray rather than watering from above.
Transplant seedlings outdoors after the last spring frost when they have developed true leaves and the soil has warmed. Space plants 8 inches apart in their final location.
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