Category Archives: Duff layer

Suspend use of Herbicide for Buckthorn Treatment in Spring

Typically in May through June (starting mid-April this year) we recommend withholding use of 18-20% glyphosate (i.e. RoundUp Concentrate Plus) for cut-stump treatment of non-native invasiveĀ buckthorn. Here is why: The cambium layer is the target area for application of herbicide … Continue reading

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Would you be surprised to learn that earthworms are an invasives species in Minnesota? I learned the nasty truth about earthworms in 2009 during a Master Naturalist course. Earthworms may help aerate the soil in my vegetable garden but are … Continue reading

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