
Based on 2,842 research-grade iNaturalist flowering observations in Vermont, Red Trillium blooms mainly from April to May, peaking in May. It ranks #1 among wildflowers recorded in the state in our data.
Trillium erectum
Red Trillium in Vermont 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 Vermont in May

Jack-in-the-Pulpit
Painted Trillium

Large White Trillium

Yellow Trout Lily
Creeping Foamflower

Marsh Marigold
Carolina Springbeauty

Northern Starflower
Places to look in Vermont
State ParkElmore State Park
Quechee State Park
Wilgus State Park
Mount Philo State Park
Coolidge State Park
Crystal Lake State Park
FAQ
When does Red Trillium bloom in Vermont?
Mainly April–May, with the most records in May.
How common is Red Trillium in Vermont?
It ranks #1 by number of iNaturalist flowering observations among wildflowers in Vermont (2,842 records in our sample).