Sego lily

Calochortus nuttallii

A beautiful and resilient native that enhances a garden's beauty, connects you with history, supports biodiversity, and charms pollinators. Calochortus Nuttallii embodies grace and the vibrant spirit of the West.

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Calochortus nuttallii: A Guide to Planting and Care

Calochortus nuttallii, also known as the Nuttall's mariposa lily or sego lily, is a beautiful wildflower native to the western United States. It is known for its showy, tulip-like flowers that bloom in the spring.

Here is a guide to planting and caring for Calochortus nuttallii in your garden:

What does Calochortus nuttallii look like?

Calochortus nuttallii has 3 white to lavender petals with a yellow base and a reddish-brown or purple band above the petal bases. The flowers are up to 2 inches wide and are borne atop a slender stem.

Calochortus nuttallii flower

Why should I plant Calochortus nuttallii?

There are many reasons to plant Calochortus nuttallii in your garden. These wildflowers are:

  • Easy to care for
  • Drought tolerant
  • Deer resistant
  • Attract butterflies and other pollinators
Some interesting facts about Calochortus nuttallii
  • The Nuttall's mariposa lily was named after Thomas Nuttall, an English botanist who explored the western United States in the early 1800s.
  • The sego lily is the state flower of Utah.
  • The bulbs of Calochortus nuttallii can be eaten.
How do I germinate Calochortus nuttallii seeds?

Sego Lilly seeds require several weeks of cold-moist stratification to germinate. Sow directly outdoors to overwinter (in USDA Zones 8 or below) or cold-moist stratify artificially in the refrigerator. Germinating seedlings should be kept moist. Plants should be grown in dry soil from mid-summer to late fall. Bulbs reach maturity in 3 to 5 years.

Additional Tips
  • Calochortus nuttallii prefers full sun to partial shade.
  • Water the plants regularly during the growing season.
  • Mulch around the plants to help retain moisture and suppress weeds.
  • Divide the bulbs every 3-4 years to keep the plants healthy.
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Product Details
Calochortus nuttallii

Data sheet

Water Needs:
Very Low, Low, Moderate
Full Sun, Full Sun / Partial Shade
3, 4, 5, 6, 7, 8
Growth Cycle:
Soil Type:
ALL Tolerant of most soils, Chalky Soil, Loamy Soil, Peaty Soil, Saline Soil, Sandy Soil, Silty Soil, Well Drained
Gold, White, Yellow
d: 6 to 12 Inches, e: Up to 1.5 Feet, f: Up to 2 Feet, g: Up to 3 Feet
Special Features:
Butterfiles and Pollinators, Medicinal Value
Growth Rate:
Moderate, Moderate/Fast

Specific References


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