Spring Whitlowgrass is a tiny annual in the mustard family, barely 4 inches tall, that blooms on rocky outcrops and bare soil in February and March, among the first flowering plants of the year. Its white flowers provide critical early pollen for queen bumblebees and early-emerging native bees. Its small size makes it easy to overlook but ecologically important.
Best time to see a Spring Whitlowgrass
The best time to see a Spring Whitlowgrass is March–April, when about 86% of U.S. sightings happen, based on 9,242 research-grade iNaturalist observations.
Not certain it is a Spring Whitlowgrass? What plant is this? walks through what to check first and the lookalikes that catch people out.
Recent Spring Whitlowgrass sightings near you
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