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Blue Oat Grass

Helictotrichon sempervirens

Sku #3997

Graceful fountains of silver-blue blades form neat ornamental clumps that combine well with other grasses. Airy, beige to light brown, terminal panicles appear mid- to late summer. A reliable and attractive accent or specimen, perfect for rock gardens. May remain evergreen in mild winter regions.

  • Light Needs
    Full sun

    Light Needs

  • Water Needs
    Water regularly, allowing soil to dry slightly between intervals.
  • USDA Zone ?
    There are very few rules in gardening, but perhaps the most important one is to work within your zone. Choosing plants that grow and thrive in your particular climate is the very first step toward having a beautiful garden. Learn More
    4 - 9

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Overview
Light Needs:
Full sun
Watering Needs:
Water regularly, allowing soil to dry slightly between intervals.
Landscape Size:
Moderate growing; reaches 2 to 3 ft. tall and wide.
Key Feature:
Dramatic Foliage and Plumes
Blooms:
Summer
Landscape Uses:
Border, Erosion Control, Firescaping/Fire Wise, Green Roof, Ground Cover, Mass Planting, Rock Garden
Detail
Botanical Pronunciation:hel-ik-toh-TREE-kon sem-per-VI-renz
Plant type:Ornamental Grass
Deciduous/evergreen:Semi-evergreen
Sunset climate zones:2 - 24, 30 - 41
Growth habit:Rounded
Growth rate:Moderate
Average landscape size:Moderate growing; reaches 2 to 3 ft. tall and wide.
Special features:Dramatic Foliage Color, Easy Care, Improved Pest and Disease Resistance, Waterwise
Foliage color:Blue-green
Blooms:Summer
Flower color:Brown
Garden styleContemporary, Mediterranean, Rustic
Design IdeasBlue Oat Grass is at home in desert gardens as well as in the traditional perennial border. Plant beside landscape boulders, in rock gardens or at the edges of natural pools. Particularly beautiful planted in masses and paired with blue-gray Mediterranean plants.
Companion PlantsBarberry (Berberis); Weigela (Weigela); Sedum (Sedum); Yucca (Yucca); Lavender (Lavandula); Ajuga (Ajuga)
Care
Care Information
Grows easily in average, well-drained soils. Water deeply, regularly during the first growing season to establish an extensive root system. Once established, water regularly, but allow to dry out slightly between intervals for best foliage color. Drought tolerant in cool climates. Prune away old, faded foliage before new growth emerges in spring.Pruning time: late winter.
Light Needs:
Light needs: Full Sun
Full sun
Watering Needs:
Water needs: Moderate
Water regularly, allowing soil to dry slightly between intervals.
History & Lore
History:
Native to Central and Southwestern Europe, the name Helictotrichon comes from the Greek words "helix" meaning spiral and "trichos" meaning hair.
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This Plant’s Growing Zones: 4 - 9

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