

Hoary Bowlesia Bowlesia incana
Hoary Bowlesia is an annual wildflower native to the lower 48 states. It blooms Feb – May.
More about this plant
Bowlesia incana is a species of flowering plant, known by the common name hoary bowlesia, in the family Apiaceae. It is native to South America and the southeastern and southwestern United States as far north as Washington. It can also be found in Pakistan and New Zealand as an introduced species. It grows in many types of habitat. This is a small annual herb growing thin, spreading stems less than 60 centimeters long. The leaves are borne on long petioles and have multilobed rounded or kidney-shaped blades less than 3 centimeters wide. The green herbage of the plant is coated in fine white hairs. The inflorescences of yellow-green flowers appear in the leaf axils. The tiny inflated fruit is only 2 millimeters wide. Wikipedia →
Growing & care
USDA PLANTS · TRY- Hardiness
- ≥ zone 8 derived from its U.S. range
- Lifespan
- Annual
Wildlife & pollinators
How pollinator value is scored →❧ Caterpillar hosts Documented caterpillar host
Recorded feeding on Bowlesia in North America, including:
How we know this (1) Methods & honest limits
We take the plant’s U.S. county range and look up each county’s long-term climate, then summarise: native rainfall = the median annual rainfall across its counties; heat tolerance = the warm end (90th percentile) of average temperature across its range (mirroring how our cold-hardiness floor uses an extreme). Counties + medians blunt the roadside/observer bias that makes point-level climate unreliable. Needs at least five placeable counties.
Honest limits: A realized, sampling-biased niche (where it has been recorded, not its physiological optimum), and county climate is coarse — large Western counties span deserts and mountains. Derived guide, never a measured fact.
Sources for this entry (16) Open & cited
Cite this page Open data, please attribute
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