Editors note: Throughout the growing season, Mike Hogan, OSU Extension Educator for Agriculture & Natural Resources in Franklin County, will answer gardening questions submitted by Dispatch readers.

Many spruce trees in our area suffer from a common needle disease and are in decline. We get several calls each year with trees showing these symptoms. This information from our Extension Plant ...

Concerned about the health of his favorite tree, a reader recently contacted me. “My blue spruce is losing some needles. Can you help me save my tree?” Not only have I had multiple readers complain ...

In recent years, most all spruce varieties have been having difficulty fighting off the fungal disease Rhizosphaera needle cast. This fungal disease causes premature death and casting of needles of ...

Have you been noticing premature needle drop on your pine trees? Are the needles turning yellow? If so, you probably have Dothistroma needle blight. This disease tends to be more severe in crowded ...

Bagworms are not the only issue we are seeing in evergreens. While insecticides for bagworms should not be applied until June, April and May are the months to apply fungicides for control of the ...

It is almost time to spray spruces for needle cast disease caused by Rhizosphaera kalkhoffii. Protective sprays applied when new needles are half-emerged from the candles provide satisfactory control.

Q: We have a spruce lined border to the back of our subdivision that our yard is a part of. Many of the trees are beginning to lose all the needles on a few low branches on each tree. It looks like ...

One of the common problems that we see in the Master Gardener office are conifers losing their needles. Environmental or site-related stresses, such as poor nutrition, fertilizer or chemical burn, can ...

The Swiss needle cast epidemic in Douglas-fir forests of the coastal Pacific Northwest is continuing to intensify, appears to be unprecedented over at least the past 100 years, and is probably linked ...

Trees across Indiana are falling victim to last year's drought and disease, and some arborists say the effects could continue for up to five years. Many of the trees affected are evergreens such as ...