Bright blue thistle-like flowers on tall stems atop light green foliage. Eryngium planum, Blue Glitter variety.
Bright blue thistle-like flowers on tall stems atop light green foliage. Eryngium planum, Blue Glitter variety.

Blue Glitter (Eryngium planum)

$24.95

Sea Holly is adored by florists and gardeners alike for its unique and long lasting, blue, spiny flowers which add interesting color and texture to bouquets or the garden. They are produced on intensely silver-blue stems and stand high above the basal rosette of blue-green, deeply toothed, smooth textured leaves. Thrives in hot, dry spaces.

Photo credit: Walters Gardens

This plant decription comes from Walters Gardens.

Sea Holly is adored by florists and gardeners alike for its unique and long lasting, blue, spiny flowers which add interesting color and texture to bouquets or the garden. They are produced on intensely silver-blue stems and stand high above the basal rosette of blue-green, deeply toothed, smooth textured leaves. Thrives in hot, dry spaces.

Photo credit: Walters Gardens

This plant decription comes from Walters Gardens.

 Key Features

Light Requirement

  • Full Sun

Growing Zones

  • Zone 4

  • Zone 5

  • Zone 6

  • Zone 7

  • Zone 8

Bloom Time

  • Mid Summer

Mature Height

  • 6 to 8 in tall

Mature Spread

  • 8 to 12 in wide

Ships As

  • Potted Plant

Planting & Care

Open the package immediately, keep it protected from the cold, and water each potted plant. If the weather is consistently above freezing, begin planting as soon as possible.

Some of our plants will ship to you as bare roots. Proper care of bare-root plants involves keeping the roots moist until you are ready to plant and storing them in cool conditions if you cannot plant immediately. When ready, plant them carefully to ensure healthy establishment in your garden.

The Best Time to Plant

The best time of year for planting perennials is either in spring after the last frost or in early fall before the first frost, depending on your climate and USDA hardiness zone. If you are planting in summer, aim to plant in the morning or early evening to minimize transplant shock. Water consistently until your plants are established and consider mulching around the roots to reduce the soil temperature. With proper attention and care, perennials can thrive in the longer days of summer and become well established before their winter dormancy period.