Elderberry Rust

Elderberry rust is a visually striking fungal disease that affects stems, leaves and flowers of plants in the genus Sambucus (i.e., elderberries). The disease also affects sedges (Carex spp.). On elderberries grown as ornamentals, as well as on sedges, the disease is primarily a cosmetic problem.

Ips Bark Beetle

Ips bark beetle, also known as the pine engraver, is an insect that attacks and kills weak, stressed, declining and dying pine and spruce trees. These insects are attracted to trees that have been stressed from drought, construction damage, overcrowding, transplant shock, flooding, disease and other insect problems. Identification and management are covered in this fact sheet.

Boxwood Blight

Boxwood blight (also known as box blight and boxwood leaf drop) is a devastating disease of boxwood (Buxus spp.) that can cause leaf loss and eventual death of affected shrubs. This factsheet covers symptoms and management.

Kiwifruit, Actinidia spp.

What’s brown and fuzzy all over and green inside? Well, the kiwifruit, of course. This Chinese fruit was popularized when it was imported into New Zealand, renamed kiwifruit instead of Chinese gooseberry, and developed as an export crop. Today this fruit crop is grown in many places worldwide, but there is more than just the kind found at the grocery store. To learn more about kiwifruit, read this article…

Fothergilla

Fothergillas are multi-season beauties grown as ornamentals well outside their original range. These low maintenance small shrubs, native to the southeastern US, have eye-catching blooms in spring and vibrant fall color in autumn. Learn more about these easily grown members of the witch-hazel family…

The Basics of Micro Irrigation

Micro irrigation has numerous advantages over sprinkler irrigation and can be used in greenhouses, orchards, vineyards, fields, lawns, and gardens. Learn about the components that comprise a micro irrigation system along with the benefits (reduced water usage, reduced potential for foliar diseases, reduced energy costs, etc.) and drawbacks these lower pressure systems provide.

European Larch, Larix decidua

Not all conifers are evergreen, and larch is one example of a conifer that loses its needles every year. The European larch is a large, deciduous tree hardy to zone 2 that is often grown as an ornamental (the North American species, including are rarely offered in the horticulture trade). Learn more about Larix decidua in this article

Serviceberry, Amelanchier spp.

If you’re looking for a small tree with attractive white blossoms in spring and small fruits that can be food for animals or humans, consider one of several species of serviceberry. There are a number of plants in the genus Amalanchier that are graceful trees or shrubs that can provide year-round ornamental interest in the landscape. To learn more, read this article…

Eastern Filbert Blight

Eastern filbert blight is a potentially serious fungal disease found throughout the United States, including Wisconsin. It affects Corylus species, commonly known as hazelnuts or filberts, causing cankers on branches and trunks. Symptoms and management are described in this factsheet.

Japanese Beetle

The Japanese beetle, Popillia japonica, is a significant pest of landscape trees and shrubs, vegetable and fruit crops, and turfgrass in the eastern United States. This factsheet describes the lifecycle of this destructive beetle along with management and control options.

Forsythia, Forsythia spp.

As one of the first shrubs to flower, the showy yellow flowers of forsythia are the ultimate symbol of spring in many places. This tough, early-blooming, medium-sized shrub does well in the urban landscape, but does have some drawbacks. Learn more about forsythia in this article…

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