
Large-Flowered Triteleia (Triteleia grandiflora) is in the agave and allies family (Asparagaceae). Across the U.S., iNaturalist users have logged 2,035 research-grade flowering observations of it in our sample, peaking in May.
Nationally it blooms mainly from April to June, but timing varies a lot by state and elevation — see the table below.
When to photograph Large-Flowered Triteleia: observations by month (U.S.)
About Large-Flowered Triteleia
Triteleia grandiflora is a species of flowering plant known by the common names largeflower triteleia, largeflower tripletlily and wild hyacinth. It is native to western North America from British Columbia to extreme northern California, eastward into Idaho, Montana and northern Utah, with disjunct populations occurring in Wyoming and Colorado. Its habitat includes grassland, sagebrush, woodlands, and forests. It is a perennial herb growing from a corm. It produces two or three basal leaves up to 70...From Wikipedia via iNaturalist — article, CC BY-SA.
Large-Flowered Triteleia by state
| State | Observations | Peak month | Main season |
|---|---|---|---|
| Washington | 871 | May | Apr–May |
| Oregon | 578 | May | Apr–Jun |
| Idaho | 343 | May | May–Jun |
| Montana | 140 | May | May–Jun |
| Utah | 85 | May | May–Jun |
| Wyoming | 18 | June | Jun–Jun |
Main season = months with at least 30% of the state's peak-month count.
Related wildflowers (agave and allies)

Ithuriel's Spear

Blue Dicks
common star-of-Bethlehem

Chaparral Yucca

Canada mayflower

Solomon's plume

Desert Lily

Small Camas
Photography tips
- Photograph flowers on calm, overcast mornings to avoid wind blur and harsh shadows.
- Get low: a shallow depth of field (f/2.8–f/5.6) isolates a bloom against soft color.
- Stay on trails — trampling meadows kills plants and ruins next year's display.
- Try a kaleidoscope abstract of a single bloom with our online kaleidoscope tool.
FAQ
When is the best time to photograph Large-Flowered Triteleia?
Nationally, May has the most observations, with the main season from April to June.
Where is Large-Flowered Triteleia most often seen?
The most observations come from Washington, Oregon, Idaho.