Blue Fescue
Festuca glauca
Blue Fescue blooms from June through July.
Mature size, hardiness zones, sun and the trait tags were checked against named botanical sources for this plant. The bloom months and water need on this page were not.
Growing Blue Fescue
Plant it in full sun. It prefers low water. It is hardy in USDA zones 4–8. Expect it to reach about 12 in tall and 12 in wide at maturity, in roughly 2 years.
When to plant Blue Fescue
Plant Blue Fescue in early spring as soon as the soil is workable, or in early fall at least six weeks before your first frost, so roots establish in cool weather. For the middle of its hardy zones 4 to 8 range, spring means March to May and fall means August or September. Once settled, it blooms from June to July.
Month-by-month timing for your zone is on the planting calendar: for the middle of its range, start with zone 6 in March.
Comes in 2 varieties
Same plant, same care - pick the variety you are growing.
Good to know about Blue Fescue
Curated from university extensions, botanic gardens and other primary sources, with the source named on every note.
Worth knowing
The silvery-blue color is not fixed: it develops fully only in full sun and lean, dry soil, and fades toward green in shade or rich, moist ground. per Wisconsin and Missouri Botanical
Deer-resistant, not deer-proof
Rutgers rates it top-tier, rarely damaged, for its fine wiry blades. But NC State notes deer and rabbits still graze it under pressure. Treat it as resistant, not proof. per Rutgers and NC State
Short-lived; divide to refresh
Clumps stay attractive only a few years (often 2 to 3) before the center dies out. Divide every 2 to 3 years: discard the dead center, replant the vigorous edges. per NC State
Summer slump is normal
A cool-season grass: it grows in spring and fall, then looks tired, yellowed, or semi-dormant in summer heat. That mid-summer decline is normal, not death. Do not panic-water it. per Wisconsin
Wet soil is the killer
It wants lean, gritty, sharply drained soil and prefers the dry side. Wet, heavy ground rots the crown and roots. A gravel mulch that keeps the crown dry aids survival. per Illinois
Well-behaved clumper, not invasive
It stays in a tidy tuft and expands only very slowly, with no running rhizomes, so it is not invasive. The one spread path is light self-seeding from dropped seed. per Iowa State
What pairs well with Blue Fescue
Good companions share its growing conditions and add something it lacks: an earlier or later bloom, a lower carpet in front, or structure through winter.
Creeping Phlox
Shares full sun and low water; blooms in mid spring, before this one opens; lower at 6 in, for the front of the border; pink against yellow, for contrast.
Basket of Gold
Shares full sun and low water; blooms in mid spring, before this one opens; lower at 8 in, for the front of the border; echoes the yellow.
Lilac
Shares full sun and low to moderate water; blooms in mid spring, before this one opens; stands well above at 9.8 ft, a canopy to plant beneath; purple against yellow, for contrast.
Monkshood
Takes full sun to part sun and low to moderate water; blooms in late summer as this one finishes; taller at 3.9 ft, for the layer behind it; blue against yellow, for contrast.
Crocus
Shares full sun and low water; blooms in late winter, before this one opens; lower at 4 in, for the front of the border; purple against yellow, for contrast.
Viburnum
Shares full sun and low to moderate water; blooms in mid spring, before this one opens; stands well above at 6.6 ft, a canopy to plant beneath; its white flowers settle the yellow.
Grape Hyacinth
Shares full sun and low water; blooms in early spring, before this one opens; lower at 8 in, for the front of the border; blue against yellow, for contrast.
Fountain Grass
Shares full sun and low water; blooms in late summer as this one finishes; taller at 3.3 ft, for the layer behind it; orange sits close to yellow on the wheel.
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