Calochortus tolmiei

Species

Tolmie Star-tulip

Calochortus tolmiei

Tolmie Star-tulip is a striking perennial with star-shaped flowers native to western U.S. mountains.

Also known as: Tolmie Star-tulip

Calochortus tolmiei, commonly known as Tolmie Star-tulip, is a perennial herbaceous plant native to the western United States, particularly found in the mountainous regions of Oregon and California. This species typically grows to a height of 12 to 24 inches, exhibiting a graceful, upright form with slender stems that support its striking flowers. The leaves are narrow and linear, emerging from the base and forming a rosette that adds to the plant’s ornamental appeal. The flowers, which bloom in late spring to early summer, are characterized by their star-shaped structure, featuring three large, petal-like tepals that are often white to pale yellow with purple markings, making them highly attractive to pollinators such as bees and butterflies. The fruit is a capsule that contains several small seeds, which are dispersed by wind or water once mature, aiding in the plant’s propagation across its native range.

Ecologically, Calochortus tolmiei plays a significant role in its habitat, providing nectar and pollen for various insects, thus contributing to the local ecosystem’s biodiversity. Human uses of this species are primarily ornamental, as its unique flowers make it a desirable choice for gardens and landscapes, particularly in rock gardens or naturalistic plantings. An interesting adaptation of this plant is its ability to thrive in well-draining soils, often in rocky or gravelly substrates, which helps it avoid root rot and other issues associated with excess moisture. Its drought tolerance once established allows it to survive in areas with limited water availability, making it a resilient choice for gardeners in similar climates.

Care Guide

🌱 Hardiness Zone
Zone 5–8
🪨 Soil
well-drained soil
☀️ Light
full sun
💧 Water
moderate moisture
🌿 Fertilization
light feeding in spring

Plant images courtesy of Wikimedia Commons — a free media repository maintained by volunteers worldwide. Thank you — please consider donating ♥

Browse This Plant's Classification

Domain Eukaryota
Kingdom Plantae
Phylum Magnoliophyta
Class Liliopsida
Order Liliales
Family Liliaceae
Genus Calochortus
Species Calochortus tolmiei