Bert Cregg
Bert Cregg is an associate professor of horticulture and forestry at Michigan State University in East Lansing.
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How-ToHow to Treat Needle Drop on Evergreen Conifers
This is a symptom that can signal anything from a severe tree problem to no problem at all. 1. What it looks like All the needles on a conifer begin…
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How-ToYellow Leaves on Red Maples and Pin Oaks—What Does It Mean?
These popular landscape trees generally start declining within one to two years of planting. 1. What it looks like Leaves turn yellow, but the veins remain green. 2. How to…
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How-ToTreat Winter Injury to Your Trees
Winter injury is among the most common tree problems experienced in colder areas of the country. 1. What it looks like Winter injury actually includes several different plant problems that…
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DesignGardening in a Changing Climate
The topic of climate change has come to permeate all facets of our lives. From the evening news to social media, discussions of carbon footprint and global warming are never…
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ArticleWhat Is the Best Mulch? We Put Mulch Qualities to the Test
Every gardener wants a gorgeous garden. Choosing the right plants for your site and using proper planting techniques are, of course, essential steps in establishing a successful landscape. Choosing the…
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How-ToThe Dangers of a Spring Cold Snap
Why does a plant that endured winter cold suddenly suffer when spring temperatures drop a bit?
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How-ToHow to Prune Conifers
These plants are unforgiving, so make the right cuts for the right reasons
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How-ToPruning Conifers for Health
One reason to like conifers is that they generally require little pruning. Still, it is occasionally necessary to prune these plants to improve appearance and/or to prevent future problems. It's…
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How-ToHow to Prune Firs, Douglas Firs, and Spruces
Learn how to prune evergreen single-needle conifers such as spruces, firs, and Douglas firs in this video with Bert Cregg, an associate professor in the horticulture and forestry departments at…
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How-ToHow to Prune Arborvitae, Junipers, and False Cypress
Conifers with fanlike needles include arborvitae, junipers, and chamaecyparis. These are found in the cypress family (Cupressus spp. and cvs.), Learn how to prune these conifers in this video with Bert…
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