Growing Guide • Delphinium
Delphiniums, with their towering spires of vibrant blooms, are a standout choice for adding dramatic flair to your garden and bouquets. Known for their striking colors and elegant shape, these perennial favorites bring a touch of sophistication to any arrangement. Perfect for mid to late summer, delphiniums offer a stunning display of blues, purples, and pinks that can transform your floral designs. Whether you're a seasoned gardener or a bouquet enthusiast, delphiniums provide both beauty and versatility to brighten up your space.
Lifecycle
Tender Perennial
Planting Season
Spring
Planting Depth
1/16 inch, requires light
Germination
14 - 30 days @ 65-70°F
Water Needs
Low
Light Needs
Full Sun, Partial Shade
Time to Bloom
90 to 120 days
Harvest Season
Mid Summer
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For direct sowing outdoors, wait until the soil temperature is around 60°F (15°C) and all danger of frost has passed.
Stratification: Cold stratify the seeds by placing them in the refrigerator for 2 to 4 weeks before sowing. This helps break seed dormancy and improves germination rates.
Outdoor Sowing: Prepare a seedbed with loose, well-draining soil. Scatter the seeds over the soil and lightly press them in. Lightly cover with a thin layer of soil or compost. Ensure consistent moisture until seeds germinate. Germination may take 2 to 3 weeks depending on weather conditions.