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Find out intensive tree information, tree care studies, latest environmental news and updates in Minneapolis and St.Paul Minnessota – Twin Cities

Garlic Mustard is an invasive species.

Removing Invasive Plants

“The philosopher who said that work well done never needs doing over never weeded a garden.” – Ray D. Everson It’s true that getting rid of weeds and unwanted, non-native plants is a serious chore. Invasive species ruin habitats and food sources for native insects, birds and other wildlife, as well as cause a significant…

Spider Mites

Spider mites on spruce, oaks and shrubs The moist weather conditions that are creating a bumper crop of mosquitoes are also benefiting other pests in the Twin Cities. The Japanese beetle population this year was higher than the last two years combined. According to Jeff Hahn, University of Minnesota Extension Entomologist, all signs point to…

summer leaf

Summer Leaf Drop

Crabapples, ornamental pears, and ash have all been losing foliage through July and August (Figure 1). The leaves that are falling are infected with apple scab, apple rust, pear scab and anthracnose.  All the diseases are fungi that infect newly forming leaves in the early spring.  Unfortunately, at this point of the season there aren’t…