Description
Russell’s Blue Lupins Seeds 6535.
Tall, Architectural Spikes of Deep Blue for Late Spring and Early Summer.
Russell’s Blue Lupins (Lupinus polyphyllus) are a timeless garden favourite celebrated for their majestic, towering spikes of rich blue flowers. Blooming throughout June and July, these impressive 60 to 90 cm tall perennials create dramatic vertical structure in sunny borders and cottage gardens. Thriving in moist soils under full sun to light shade, their flower shades can subtly shift toward a purplish hue depending on soil pH levels, adding dynamic natural beauty to your landscape while attracting native pollinators and hummingbirds.
Quick Seed Details
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Product Code: 6535
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Botanical Name: Lupinus polyphyllus ‘Russell Blue’
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Type: Hybrid Perennial
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Hardiness: Zone 5
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Height: 60–90 cm
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Bloom Time: June to July
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Light Requirement: Full Sun to Light Shade
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Soil Preference: Moist, well-drained soil (soil pH may influence exact shade)
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Germination: Approx. 20 days at 16°C
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Seed Count: Approx. 40 seeds per packet (45 seeds per gram)
What you need to know to Plant & Grow
Lupins have hard seed coats and prefer cool germination conditions for best results.
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Seed Preparation: Soak seeds in water for 24 hours prior to sowing to soften the hard outer coat and promote uniform germination.
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Indoor Sowing: Start seeds indoors 6 to 8 weeks before your last expected spring frost date. Sow in a quality soilless starter mix and maintain a cool germination temperature of 16°C for the 20 day germination period. Keep sprouted seedlings under grow lights at the same cool temperature before hardening off and carefully transplanting outdoors after frost danger passes.
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Outdoor Direct Sowing: Direct sow seed outdoors in late fall for natural winter stratification and robust spring sprouting.
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Care & Placement: Plant in a moist, sunny to lightly shaded location. Avoid disturbing the taproots once established in the garden.
Why Russell’s Blue Lupins Seeds belong in Your Garden
If you want striking architectural height and classic cool-toned elegance, Russell’s Blue Lupin is an essential selection. Its tall, stately spires, pollinator friendliness, and vibrant late-spring display make it an irreplaceable staple for perennial borders across Canada.
