How to identify and track invasive wisteria in Richmond

Wisteria is a tell-tale sign of spring in Richmond, but there’s more to this beautiful plant than meets the eye.

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I found this wisteria decorating a gate while out and about earlier this week.

Photo by RICtoday

As March closes and April yawns to life, so do the fragrant blooms of wisteria plants around Richmond and in the greater south.

A sign of spring...

The twining perennial plant is known for its fast-growing vines and cascading purple flowers — like something out of a storybook forest. It’s most often seen climbing up backyard fences, draping across buildings, or clinging to trees or power lines alongside streets and highways.

But, is it supposed to be?

Odds are, the whimsical blooms you’re seeing right now are invasive species. Bummer, right? It can be tricky to identify native vs. non-native wisteria, but timing can be one of the first indicators.

A mass of wisteria vines and blooms growing along trees; in the top and top right corner is blue cloudy sky.

Invasive wisteria can grow and wind tightly around host trees or other vegetation, constricting them and depriving them of life.

Photo by RICtoday

“If you’re in the American South and spot blooming wisteria along highways or neighborhood streets in March or April, you’re almost certainly looking at the invasive, non-native species,” according to The Plant Native.

Native American wisteria typically blooms in late spring or early summer, around June and July.

Be the botanist

Once you’re ready to track down some wisteria and put your species-identification skills to the test, iNaturalist created an online map that actively records local sightings. Since 2016, there have been 100+ reports of wisteria in Richmond, so you have plenty of leads to get started.

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iNaturalist allows users to submit plant sightings for “community-census” identifications. This recently reported bloom, logged at Maymont, awaits an official ID but is suspected to be invasive.

Screenshot via iNaturalist

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