Blue oat grass (Helictotrichon sempervirens, syn. Avena candida) has dramatic powder blue foliage and spiky architecture. Leaves resemble rigid tapering steel blue linguine in a porcupine-like dome.
Combines well with purple- or silver-leaved plants.
Well-drained, poor to moderately fertile, alkaline soil. Tolerates gravelly, infertile soils. Remove dead leaves/old flowers spring. Drought tolerant once established. Sow seed spring or divide clumps spring.
Rust.
Evolvulus 'Blue My Mind': True Blue Blooms Without Deadheading
Fothergilla 'Blue Shadow': Compact Native with Fragrant Flowers & Blue Foliage
Geranium 'Johnson's Blue': Classic Lavender-Blue Saucer Flowers
Hosta 'Blue Angel' (Hosta 'Blue Angel'): Very Large Blue Hostas with Heavily Textured Leaves
Iberis sempervirens: Evergreen Candytuft for Sunny Borders
Ilex × meserveae: Blue Holly with Glossy Blue-Green Leaves and Red Berries
Blue Globe Onion (Allium caeruleum): Rare True Blue Flowers for Early Summer
Arkansas Blue Star (Amsonia hubrichtii): Feathery Foliage, Blue Flowers, Golden Fall Color
Blue Pimpernel (Anagallis monellii): Low-Growing Carpet of Deep Blue Flowers
Hemerocallis 'Calico Blue Baby': Daylily with Violet-Blue Eye
Stachytarpheta urticifolia: Blue Porter Weed for Butterfly Gardens and Self-Sowing Color
Cupressus sempervirens 'Tiny Tower': Compact Italian Cypress for Evergreen Screens
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