Sea Holly

Sea Holly

SKU: FL1206
This drought tolerant perennial thrives in sandy, well drained soil. Its stiff, spiny leaves are bluish green with silvery veins. It forms a clump over time, and blooms from June to September. Read More

Exposure Full-sun

Shipping & Returns

West Coast Seeds ships anywhere in North America. However, we are not able to ship garlic, potatoes, asparagus crowns, bulbs, onion sets, Mason bee cocoons, or nematodes outside of Canada. We regret, we cannot accept returns or damages for orders outside of Canada. The minimum shipping charge to the US is $6.99.

More details about Sea Holly

Eryngium planum. This drought tolerant perennial thrives in sandy, well drained soil. Its stiff, spiny leaves are bluish green with silvery veins. It forms a clump over time, and blooms from June to September. The blue flowers and foliage provide superb contrast against brighter flowers or against areas of summer drought. Direct sow the seeds in autumn, or stratify in the fridge for three weeks if sowing in the spring. This involves planting into moist soil and enclosing the container in a plastic bag in the fridge. When the three weeks are up, move the bagged container into a warm room and await germination. Either way, this simulation of winter improves germination in Sea Holly seeds. This species type grows to 50cm (20") tall.

Quick Facts:

    • Drought tolerant
    • Can grow near the shore
    • Perennial
    • Deer resistant

We'll notify you when this product is back in stock.


Sea Holly

We don't share your information with others.

Your notification has been registered.  Click to close!

All About Sea Holly

General

General
Good drainage is fundamental to growing this plant.

Latin

Latin
Eryngium planum
Family: Apiaceae

Difficulty

Difficulty
Somewhat challenging

Exposure:

Exposure: Full sun
Zone: Hardy to Zone 5

Timing

Timing
Germination can be slow, and the seeds benefit from vernalization. Sow pre-moistened flats and seal them in plastic bags in late winter. Refrigerate for two to three weeks. Then move the flats outdoors to a shady location after all threat of frost has passed. Transplant as seedlings appear, which usually takes two to three weeks. Or, more simply, direct sow in the fall.

Starting

Starting
Sow seeds 2mm (1/8″) deep. Germination can take 5 to 90 days, so be patient.

Growing

Growing
Water only during very dry spells. Carefully mulch around the crowns with fine gravel to keep plants dry over winter. The long taproots make transplanting difficult.

How to Grow Eryngium

Step 1: Timing

Germination can be slow, and the seeds benefit from vernalization. Sow pre-moistened flats and seal them in plastic bags in late winter. Refrigerate for two to three weeks. Then move the flats outdoors to a shady location after all threat of frost has passed. Transplant as seedlings appear, which usually takes two to three weeks. Or, more simply, direct sow in the fall.

Step 2: Starting

Sow seeds 2mm (1/8″) deep. Germination can take 5 to 90 days, so be patient.

Step 3: Growing

Water only during very dry spells. Carefully mulch around the crowns with fine gravel to keep plants dry over winter. The long taproots make transplanting difficult.

Customer Reviews