Post volutella blight in a pachysandra planting
We recently removed a 20x30 patch of volutella blighted pachysandra. In remediating the soil,
how deep should we be? Or what special precautions have to be taken? Our replanting scheme calls for some sod, weeping oak hydrangea and bird's nest spruce. Or given planting these species, do we have to even replace the original soil?
Long Lake Twp.
Traverse City, MI 49685
Grand Traverse County Michigan
In Michigan, the disease (Volutella pachysandrae) that causes Volutella blight of Pachysandra only infects Japanese Pachysandra (Pachysandra terminalis). Unless you are growing Japanese Pachysandra in that area, then you have nothing to worry about.
Thanks Nate for the response.
Another question: Our landscaper wants to use Roundup to ensure the roots of the
diseased pachysandra are eliminated. Your thoughts about that? Thank you....
if your landscaper is a certified pesticide applicator, then they most likely know what active ingredients and herbicide formulations will work best in this situation. With that said, here are my thoughts on the subject. If the only active ingredient in the product is glyphosate, then I would be doubtful of its effectiveness in this particular setting. Glyphosate works best when it contacts actively growing foliage. If this is done in late summer, then the herbicide is pulled down into the roots and will kill the entire plant. Some products with the brand name that you are mentioning have active ingredients other than glyphosate. Depending on what they are, they can have the ability to penetrate into the soil and kill the roots. Unfortunately, those active ingredients are also the most likely to be pulled farther down into the soil and harm nearby woody landscape plants such as trees.