Siskiyou Lewisia

Lewisia cotyledon

Common name: Siskiyou lewisia

Botanical name: Lewisia cotyledon

Lewisia cotyledon habit

Siskiyou lewisia forms a rosette of leaves from which sprout panicles of inch-wide flowers.

Virtues: Bright flowers and compact shape. Likes to grow on ledges and cliffs, making it a good choice for a dry rock garden, in the crevices of a wall or in a strawberry pot.

Flowers: White, pink, yellow, or purplish flowers appear in spring and summer, carried in compact panicles (branched flowering structure). Flowers can be striped with lighter and darker shades.

Foliage: Fleshy, spoon-shaped dark green leaves.

Habit: Leaves form flat rosettes. Evergreen perennial. To 12 inches tall and 12 inches wide.

Season: Spring and summer, for flowers.

Origin: Rocky embankments of northern California and southern Oregon.

Cultivation: Grow in light shade to full sun. Good drainage is a must, as is protection from winter moisture. Soil may be neutral or acidic. Zones 3–8.

Top image attribution & rights

Bottom image attribution & rights

Find more gardening resources at

Horticulture January 2010 is available as a download; it includes 50 great native plants.

See our CD on gardening with perennials

Related Posts:

2 thoughts on “Siskiyou Lewisia

  1. I have a Lewisa that is about 4 years old, it’s in a clay pot and LOVES water. It loves sitting in water!!
    The plant has grown and is now about 12 rosettes mounding in the pot with 50 flower stalks and has rebloomed 4 times a year.

    Striking beauty on my deck.

    • Hi, Jean, your lewisia must be gorgeous when it blooms! I am really surprised that it loves to sit in water because generally the taproot would rot. I bet the clay pot wicks some of the moisture away and provides great drainage. Well, you clearly have a happy plant! Keep up the good work!

Leave a Reply