Telegraphweed (Heterotheca grandiflora) is in the Sunflowers, Daisies, Asters, and Allies family (Asteraceae). Across the U.S., iNaturalist users have logged 1,594 research-grade flowering observations of it in our sample, peaking in September.
Nationally it blooms mainly from August to March, but timing varies a lot by state and elevation — see the table below.
When to photograph Telegraphweed: observations by month (U.S.)
About Telegraphweed
Heterotheca grandiflora is a species of flowering plant in the daisy family known by the common name Silk-grass goldenasteror telegraphweed. It is native to the southwestern United States (California, Nevada, Utah, Arizona) and northwestern Mexico (Baja California), but it can be found in other areas as an introduced species, such as Hawaii. It is often a roadside weed even where it is native.From Wikipedia via iNaturalist — article, CC BY-SA.
Telegraphweed by state
| State | Observations | Peak month | Main season |
|---|---|---|---|
| California | 1,568 | September | Aug–Mar |
| Hawaii | 19 | October | Sep–Jan |
| Arizona | 7 | August | Aug–Sep |
Main season = months with at least 30% of the state's peak-month count.
Related wildflowers (Sunflowers, Daisies, Asters, and Allies)
black-eyed Susan
Common Yarrow
White Snakeroot
Chicory
Lawn daisy
Philadelphia fleabane
Pearly Everlasting
Blue Mistflower
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 Telegraphweed?
Nationally, September has the most observations, with the main season from August to March.
Where is Telegraphweed most often seen?
The most observations come from California, Hawaii, Arizona.