Sea holly blue - 70 seeds (Eryngium alpinum)
SEA HOLY BLUE SEEDS (Eryngium alpinum superbum)
Sea Holly Alpinum (Eryngium Alpinum Superbum) - Eryngium Alpinum Superbum is nothing short of fantastic and is easy to grow from Eryngium seeds. It is commonly known as Alpine Sea Holly, and it is one of the showiest Sea Holly plants available on the market. The metallic stems and large thistle-like flowers mature to an intense steel blue color from summer through autumn.
Perfect for cutting
The summer-blooming blossoms, which are actually soft-to-the-touch, harden to long-lasting cut flowers that are perfect for drying and preserving.
SOWING:
Season: Perennial
Plant Height: 27 inch (70 cm)
Bloom Season: Summer to autumn
Environment: Full sun to partial shade
Bloom Color: Blue
Soil Type: Well-drained soils, pH 6.8 - 7.2
Deer Resistant: Yes
House Plant: No
Temperature: 17 to 22C (64 to 72F) for the first 2–4 weeks. After this period, the sowing must be kept at a cold temperature between -4 to 4C (25 and 39F) for another 4 - 6 weeks
Average Germ Time: 28 - 56 days
Light Required: No
Depth: Surface sow seed and press tightly in to soil
Moisture: Keep seeds moist until germination
Plant Spacing: 24 inches (60 cm)
Other: Drought tolerant
Ideal for: Cut flower, butterflies.
How To Grow Sea Holly Alpinum From Seed: Alpine Sea Holly will grow from flower seeds in partial shade, but prefers full sun. It is a deciduous, tap-rooted perennial that dislikes root disturbances, so it is best to start Eryngium seeds directly outdoors.
Sow seeds in the spring after frost season has passed. Surface sow Eryngium seeds and then tightly press into the soil. Seeds must be kept moist until germination begins.
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Data sheet
- Color
- Blue
- Height
- Up to 90cm (35in)
- Moisture
- Medium
- Ideal for
- Cut flowers
- Sunlight
- Full sun
- Scented
- Unscented
- Sowing month
- April
August
March
September - Type
- Hardy annual
Specific References