Boulder Blue Fescue

Boulder Blue Fescue (Festuca glauca 'Boulder Blue') is a stunning ornamental grass producing tight, symmetrical mounds of intensely metallic blue-gray foliage that glows brilliantly in full sun. The fine, needle-like blades form a perfectly rounded, architectural clump that serves as a year-round focal point in borders, rock gardens, and container plantings. In late spring, slender flower stalks rise above the foliage mound, adding graceful movement and a soft, feathery texture to the display.

These Professional Grade 4" plants are grown with heritage practices, developing compact, fibrous root systems that anchor firmly and establish quickly in a wide range of well-drained soils. Boulder Blue Fescue is one of the most architectural and versatile ornamental grasses available — equally effective as a border edging plant, rock garden specimen, container accent, or mass planting for textural contrast. Its exceptional drought and heat tolerance makes it an outstanding choice for water-wise, low-maintenance, and Mediterranean-style landscapes.

• Intensely Metallic Blue-Gray Foliage: Among the bluest of all ornamental grasses, Boulder Blue produces a striking, jewel-toned hue that holds its color from spring through fall — providing year-round structural interest and color contrast in beds and borders.
• Perfectly Rounded Architectural Form: The tight, symmetrical mounding habit creates a natural sculptural element in the garden — ideal for repeating in formal borders, lining pathways, or anchoring mixed container plantings.
• Exceptional Drought & Heat Tolerance: Once established, Boulder Blue Fescue thrives in hot, dry conditions with minimal supplemental irrigation — a top performer in water-wise, xeriscaping, and Mediterranean-style garden designs.
• Outstanding Rock Garden & Container Plant: The compact size, striking color, and architectural form make this an ideal choice for rock gardens, gravel gardens, troughs, raised beds, and mixed patio containers.
• Cold Hardy & Long-Lived Perennial: A tough, reliable ornamental grass that returns year after year in a wide range of climates, maintaining its dramatic blue coloring and tidy clumping habit with minimal seasonal maintenance.

These 4" healthy live plants thrive in full sun (6+ hours) with sharply well-drained soil and low to moderate water. Excellent drought tolerance once established; avoid clay soils and overwatering, which can cause crown rot. Hardy in USDA zones 4–8. Mature height: 8–12 inches; spread: 10–14 inches. Bloom time: May–June. Divide clumps every 2–3 years in early spring to maintain vigor and the characteristic brilliant blue color.