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Sea Holly (Eryngium Blue Thistle), with its stunning glittering blue spiky flowers, is an eye-catching addition to any garden. Known for its unique appearance and resilience, this perennial plant attracts a variety of pollinators, including bees and butterflies, making it a perfect choice for pollinator gardens and wildlife habitats. This 1500+ seed packet ensures you can grow multiple plants, creating a striking and low-maintenance addition to your garden.
Whether you're looking for drought-tolerant plants or a beautiful accent for your garden, Sea Holly will not disappoint. It’s the perfect addition to any landscape, offering long-lasting beauty and ecological benefits.
Product Overview
- Common Name: Sea Holly, Blue Thistle, Eryngium
- Scientific Name: Eryngium spp.
- Plant Type: Perennial
- Flower Color: Vibrant blue with a metallic sheen
- Height: 2-3 feet (60-90 cm)
- Seed Packet Size: 1500+ seeds
- Growing Zones: Suitable for USDA hardiness zones 4-9
- Pollinator Friendly: Attracts bees, butterflies, and other pollinators
Sea Holly is an outstanding choice for gardeners seeking a low-maintenance yet high-impact plant that thrives in a range of environments. Its blue spiky flowers add texture and contrast, making it an excellent option for flower beds, cut flower gardens, or wildflower meadows.
Growing Conditions
Light Requirements:
- Full Sun: Sea Holly flourishes in full sunlight and requires at least 6 hours of direct sunlight each day to promote healthy growth and vibrant blooms.
Soil Preferences:
- Well-Draining Soil: Sea Holly prefers well-drained, sandy or loamy soils. It can tolerate a range of soil types but thrives in those that do not retain excessive moisture.
- Soil pH: Ideal in slightly acidic to neutral soil with a pH range of 6.0 to 7.0.
Temperature and Climate:
- Hardiness Zones: Best suited for USDA hardiness zones 4-9, Sea Holly thrives in areas with cooler to moderate temperatures.
- Climate: This plant is quite drought-tolerant and heat-resistant, making it perfect for dry or coastal gardens. It can withstand salt spray, making it an excellent choice for coastal and seaside gardens.
Planting Instructions
When to Plant:
- Best Planting Time: Plant Sea Holly seeds in early spring after the last frost or in fall for a winter sowing. You can also start seeds indoors around 6-8 weeks before the last expected frost.
How to Plant:
- Sowing Depth: Sow seeds about 1/8 inch deep (3 mm) into the soil. Lightly cover the seeds and press them gently into the soil to ensure good seed-to-soil contact.
- Spacing: Space the seeds about 12 inches apart to allow for proper growth and airflow between plants.
Germination:
- Germination Time: Sea Holly seeds typically take 2-3 weeks to germinate at temperatures around 65-70°F (18-21°C).
- Growth Time: Sea Holly is a slow grower at first but will become more robust and show its full beauty in the second year.
Watering Instructions
- Watering Frequency: Sea Holly is drought-tolerant once established but requires regular watering during the initial growing period. Keep the soil moist but not soggy.
- Avoid Overwatering: Sea Holly prefers soil that drains well. Overwatering can lead to root rot and other diseases.
USDA Growing Zones
- Hardiness Zones: Sea Holly thrives in USDA hardiness zones 4-9. It’s perfect for temperate regions, from colder northern climates to warmer southern zones.
Global Growing Zones
- Suitable Regions: In addition to the U.S., Sea Holly is well-suited for Europe and parts of Asia, particularly in coastal and temperate regions. It is adaptable to dry, sunny conditions and can thrive in coastal climates exposed to saltwater.
Key Benefits & Uses
Pollinator-Friendly:
- Attracts Bees & Butterflies: Sea Holly is an excellent addition to any pollinator garden, drawing in bees, butterflies, and other beneficial insects. It plays a vital role in supporting local ecosystems and biodiversity.
Ornamental Value:
- Striking Flowers: The blue spiky flowers are a standout in any garden, adding unique texture and color. The plant’s metallic sheen makes it eye-catching and suitable for cut flower arrangements.
Drought & Heat Tolerant:
- Low Maintenance: Sea Holly is extremely drought-tolerant and heat-resistant, making it ideal for xeriscaping or regions that experience dry conditions.
Soil Improvement:
- Improves Soil Health: As a perennial, Sea Holly’s deep roots help stabilize the soil and can aid in erosion control in areas prone to soil loss.
Best Uses in the Garden & Landscape
- Pollinator Gardens: Sea Holly is an excellent choice for pollinator gardens, supporting a wide variety of bees, butterflies, and other essential insects.
- Flower Beds: Its striking blue flowers add texture and contrast to flower beds or mixed perennial gardens.
- Coastal Gardens: Sea Holly is particularly well-suited to coastal gardens or areas exposed to salt spray, making it perfect for seaside landscapes.
- Cut Flower Gardens: Its unique flowers make Sea Holly an excellent choice for cut flower gardens and arrangements. The blooms hold up well in vases and provide long-lasting beauty.
Conclusion
Sea Holly (Eryngium Blue Thistle) is an excellent plant for gardeners looking for low-maintenance, drought-tolerant perennials that also benefit pollinators. With its blue, spiky flowers and resilient nature, it adds a unique aesthetic to any garden while supporting local wildlife. Whether you are looking to add color and texture to your landscape or create a pollinator-friendly environment, Sea Holly is a great choice.
Start your Sea Holly garden today with this 1500+ seed packet and watch your garden come alive with the vibrant, glittering blue thistle that attracts bees and butterflies all season long!
Bring a striking, architectural element to your garden with Sea Holly - Deep Blue. Known for its unique spiky flowers and silvery-blue foliage, this variety of Sea Holly offers a bold, dramatic contrast in any landscape. The vibrant, deep blue blooms are not only eye-catching but also attract pollinators like bees and butterflies, making it a perfect addition to wildlife-friendly gardens. Whether planted in borders, flower beds, or as a standalone accent, Sea Holly - Deep Blue creates a captivating and enduring visual impact.
Features:
- Bold Deep Blue Blooms: The striking deep blue, spiky flowers provide an eye-catching focal point, contrasting beautifully with the silvery-green foliage.
- Pollinator-Friendly: Attracts bees, butterflies, and other pollinators, helping to promote a healthy and thriving garden ecosystem.
- Unique, Architectural Look: The sharp, spiky form of both the flowers and foliage creates an architectural element in your garden, perfect for adding texture and contrast to flower beds and borders.
- Long-Lasting Beauty: Enjoy the enduring beauty of Sea Holly - Deep Blue, which retains its striking form throughout the summer and into fall.
- Drought and Heat Tolerant: This hardy plant thrives in hot and dry conditions, making it perfect for low-maintenance, water-wise gardens.
Specifications:
- Plant Type: Perennial
- Flower Color: Deep blue
- Height: 24–30 inches (60–75 cm)
- Spacing: 12–18 inches (30–45 cm)
- Light Requirements: Full sun
- Growing Season: Summer to fall
- Soil Preference: Well-drained, slightly acidic to neutral soil
Sea Holly - Deep Blue (Eryngium planum) is a stunning and hardy perennial that adds both drama and elegance to any garden. With its bold, deep blue flowers and silvery foliage, it is perfect for creating striking focal points in borders, flower beds, or wildflower gardens. Low-maintenance and drought-tolerant, it thrives in full sun and adds lasting beauty while supporting pollinators.
Sea Holly Seeds - Blue Star (Eryngium planum) produces striking, spiky blue flowers that stand out in any garden. This unique perennial is known for its bold, star-shaped blooms and silvery foliage, making it an eye-catching addition to flower beds, borders, and dry gardens. Sea Holly Blue Star thrives in full sun and well-drained soil, making it perfect for low-maintenance, drought-tolerant landscapes. The plant is also beloved for its ability to attract pollinators like bees and butterflies, adding both beauty and ecological value to your garden.
Features:
- Bold, star-shaped blue flowers with silvery, spiny leaves that create a striking visual display
- Hardy perennial that thrives in full sun and well-drained soil
- Drought-tolerant and low-maintenance, perfect for dry gardens and xeriscaping
- Attracts pollinators such as bees and butterflies, supporting garden biodiversity
- Ideal for flower beds, borders, and rock gardens, adding texture and color
Unique texture and form that make it stand out in any garden design