Tag Archives: invasive

Sweet clover control

By Bill Kleiman, Nachusa Grasslands, TNC In Nebraska, Chris Helzer of TNC, does no or little work against sweet clover.  Perhaps Nebraska is  dry enough that yellow and white sweet clover (Melilotus officinalis and M alba) are there but not … Continue reading

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Wild Parsnip. Is it invasive or just a weed?

By Bill Kleiman, The Nature Conservancy at Nachusa Grasslands Pastinaca sativa, wild parsnip lives two years, with flower and seed set on year two. Every June you will find us mowing it somewhere on the preserve, as this is when … Continue reading

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Managing invasive cattails by Nathan Herbert

Nathan Herbert Managing wetland habitat inevitably involves controlling cattails. Recovering a wetland from a well-established cattail colony is a 5-to-10-year project that requires persistence and multiple herbicide application methods. In colonies with a high density of cats, a two person … Continue reading

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Control of reed canary grass

By Bryon Walters, Conservation Contractor, near Mendota Illinois In early Spring 2018, I wanted to reduce Reed Canary Grass (Phalaris arundinacea) in a very nice, perpetually wet seep area. This area in late May will be solid Skunk Cabbage, Marsh … Continue reading

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Siberian elm controlled by basal bark herbicide

20% garlon 4 in basal bark oil sprayed at the base of invasive Siberian elm, Ulmus pumila, kills these small elm trees growing in our prairie planting.  Above is one dead elm.  There is a small ring of dead, or … Continue reading

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Basal bark application part 4

Previously I described success in killing honeysuckle with October and May applications when the leaves were on the stems of the shrub.  Here are a few kill counts we have from dormant season applications with leaves off: March 6 and … Continue reading

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Basal bark application on honeysuckle part 1

Basal bark works.  Applying brush herbicide with a mineral oil carrier allows the herbicide to be sprayed on the bark.  The mix absorbs into the basal cells of the bark where all the action occurs in a tree or shrub.  … Continue reading

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Fire does not kill the roots of invasive honeysuckle

Fire top kills honeysuckle, but does not kill the root.  We have burned our Bennett woods unit annually for about a dozen years.   The fires top kills most of the honeysuckle, with some plants not affected because they were next … Continue reading

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Managing invasive Amur honeysuckle

In Plants of the Chicago Region, Swink and Wilhelm describe invasive honeysuckle just right: “It would be difficult to exaggerate the weedy potential of this shrub.”   Invasive honeysuckle does very well in savannas, edges of woods, and open fields.  It … Continue reading

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foliar spray of shrubs leads to off target kill

Photos above show a honeysuckle shrub I carefully sprayed while doing some other weed work. The second photo is about 20 days later. The shrub died but I show this photo to demonstrate the area of the off target damage. … Continue reading

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