Based on 751 research-grade iNaturalist flowering observations in Idaho, Showy Milkweed blooms mainly from June to July, peaking in June. It ranks #2 among wildflowers recorded in the state in our data.
Asclepias speciosa
Showy Milkweed in Idaho by month
Bars show research-grade observations per month. They mix true seasonality with how often people are outdoors, so treat small numbers with caution.
Also in bloom in Idaho in June
White Mariposa Lily
Hooker's onion
Large-Flowered Triteleia
Small Camas
Orange Honeysuckle
Bride's Bonnet
Sagebrush Mariposa Lily
Arrowleaf Balsamroot
Places to look in Idaho
National ForestBoise National Forest
National ForestCaribou–Targhee National Forest
National ForestSawtooth National Forest
State ParkCity of Rocks National Reserve
State ParkMassacre Rocks State Park
National ForestKaniksu National Forest
FAQ
When does Showy Milkweed bloom in Idaho?
Mainly June–July, with the most records in June.
How common is Showy Milkweed in Idaho?
It ranks #2 by number of iNaturalist flowering observations among wildflowers in Idaho (751 records in our sample).