Species Idaho fescue

Idaho fescue

Festuca idahoensis

Also Known As - blue bunchgrass
Idaho fescue (Festuca idahoensis) is a small, tufted, evergreen, perennial grass native to the western United States and Canada. This species produces slender, blue-green leaves that grow in clumps up to 6 inches tall. Its small flower heads often appear to float above the plant, creating a unique look. Idaho fescue is a great choice for ornamental gardens, rock gardens, and areas where drought tolerance is a priority. This species does best in well-draining soil and full to partial sun. When grown in sun, this species becomes more drought-tolerant and can withstand more foot traffic. Its ability to tolerate poor soils and cold temperatures makes it an excellent choice for landscapes in colder climates.

Cycle:

Perennial

Watering:

Minimum

Propagation:

Division

Hardiness Zone:

3

Flowers:

Showy, Blue, Yellow, Green, Violet, (blue-green with yellow anthers) Flowers In Spring

Sun:

Full sun

Soil:

Rocky , gravelly , dry, Well-drained

Fruits:

Fruits In Autumn Ready In Fall

Leaf:

Yes

Leaf Color:

green

Growth Rate:

Moderate

Salt Tolerant:

Yes

watering

Idaho fescue should be watered twice weekly in the summer and once every 2 weeks in the winter. During the summer, water the grass until the top 5 cm (2 inches) of soil is moist, but not soggy. In the winter, provide a light watering that does not saturate the soil. Do not water the Idaho fescue when temperatures are below 40°F (4°C).

sunlight

Idaho fescue (Festuca idahoensis) does best when it is exposed to full sun throughout the day. It prefers long periods of direct sunlight and can tolerate up to 8 hours per day. In its native environment, Idaho fescue sees significantly more sunlight than that, so it can benefit from at least 6-8 hours or full sun exposure in non-native settings. During the Summer months, direct sunlight is necessary for best growth, but during the Winter months, some light shade can be beneficial, as this helps to protect it from the damaging effects of frost.

pruning

Idaho fescue can be pruned once a year, typically in springtime, to remove dead or diseased foliage and promote the growth of new green foliage. An individual pruning will typically remove no more than 1-third of the total grass blades, and it should be done over several weeks or months rather than all at once. Pruning Idaho fescue too severely can damage the plant or reduce its vigor.

Season

Fall
Winter
Spring
Summer
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Starts Flowering

Idaho fescue typically starts flowering in late spring or early summer, usually between May and July.

Starts Flowering

Idaho fescue typically starts flowering in late spring or early summer, usually between May and July.

Harvest Fruit

Harvesting of Idaho fescue typically begins in June and continues through August.

Hardiness Map