Festuca idahoensis ‘Siskiyou Blue’

(Siskiyou Blue Fescue)

By October 7, 2021
Festuca Idahoensis 'Siskiyou Blue or Siskiyou Blue Fescue's moundnig blue-grey grass planted in landscape with cream feather-like flowers

About Festuca idahoensis ‘Siskiyou Blue’ (Siskiyou Blue Fescue)

This mounding grass is known as Festuca idahoensis ‘Siskiyou Blue’ or, more commonly, Siskiyou Blue Fescue. Its fine grass-like blue grey foliage reaches an average landscape size of 1-1.5′ tall by 1-1.5′ wide. During the spring, cream feather-like blooms emerge on long stalks reaching above the foliage by almost 1′.

Care and planting instructions

Plant Siskiyou Blue Fescue in an area that receives full sun to part shade using well-draining soil. Water regularly after planting to establish a healthy root system then reduce the frequency to weekly. This evergreen clumping grass has been known to deter deer and is very cold hardy to below 0 degrees Fahrenheit.

Landscape design ideas

As a cold hardy evergreen grass, Siskiyou Blue Fescue is a great option for California landscapes that have frequent cold fronts. Its clumping appearance looks interesting when planted in multiples on a bare hillside, prevent erosion or, used as a border to planting beds.


Looking for more grass-like plant options? Read more about Carex tumulicola, Deschampsia cespitosa ‘Northern Lights’ or Calamagrostis ‘Karl Foerster’.




Botanical Name: Festuca idahoensis 'Siskiyou Blue'

Common Name: Siskiyou Blue Fescue

Average Landscape Size: 1-1.5' x 1-1.5'

Plant Type: Evergreen

Bloom Color: Cream

Foliage Color: Blue-grey

Forms: Mounding grass

Sizes: 1 Gallon

Special Features: Low Maintenance, Waterwise, Year-round Interest, Good For Container Or Ground Planting, Easy Pruning, Tolerates Light Frost,