Scouting for invasive species this fall

Scouting for Invasive Species this Fall

Fall is a great time to scout for invasive plants because they stay green longer than native species.

It's a beloved time of year for many Minnesotans, with vibrant colors of maples, oaks, sumac, dogwoods, and other native trees and shrubs. However, as leaves drop, patches of persistent green foliage may appear out of place in woods or along trails, raising a red flag.

Many invasive trees and shrubs hold onto their leaves later into the fall, giving them a competitive advantage as they take in extra sunlight, making them easy to spot and manage.

Many invasive trees and shrubs hold onto their leaves later into the fall than our native species.

This contrasting green is a key indicator of invasive species, allowing for effective scouting and management during the fall season.

Author's summary: Fall is a great time to scout for invasive species in Minnesota.

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Extension at the University of Minnesota Extension at the University of Minnesota — 2025-10-15

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