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Name: Blue Eryngo Sea Holly
Type: Eryngium planum
Description:
Looking for a perennial that will grow in that hot, sun-baked spot in your landscape? Sea Holly is just the plant! Unique and long lasting, blue, spiny flowers which add interesting color and texture to bouquets or the garden.
Looking for a perennial that will grow in that hot, sun-baked spot in your landscape? Sea Holly is just the plant! Unique and long lasting, blue, spiny flowers which add interesting color and texture to bouquets or the garden.
Location: Blue
Sun Level: Full sun, Partial Shade
Bloom Time: All Summer
Height: 18 in.
Spread: 12 in.
Care:
Sea holly plants are easy to care for, as long as you provide the proper soil and sun conditions. You'll want to plant sea holly in dry to medium sandy soil in a location that boasts full sun. Once planted, it will require little tending. Flowering for most varieties starts in midsummer and will continue well into the fall. Large heads of steel-blue prickly flowers
Propagation:
Sea holly will bloom longer if you deadhead the spent flowers. At the end of the growing season, prune the plants off near ground level. But the spent flowers also look wonderful long into winter, so you always have the option to leave the fall flowers on the stems.
Sea holly will bloom longer if you deadhead the spent flowers. At the end of the growing season, prune the plants off near ground level. But the spent flowers also look wonderful long into winter, so you always have the option to leave the fall flowers on the stems.
Diseases:
In dry soils, sea holly is generally free of nearly all pests and diseases. In damp soil, it can be susceptible to fungal leaf spot diseases and root rot. Powdery mildew can also be a problem; base watering and good air circulation will minimize mildew infection. Moist conditions may encourage aphids, slugs, and snails to feed on the foliage.
In dry soils, sea holly is generally free of nearly all pests and diseases. In damp soil, it can be susceptible to fungal leaf spot diseases and root rot. Powdery mildew can also be a problem; base watering and good air circulation will minimize mildew infection. Moist conditions may encourage aphids, slugs, and snails to feed on the foliage.