I have a large stand of Viola striata. Around the middle of October, I run the lawn mower over the entire patch. It seems to benefit the plants and in the Spring, they come back with good foliage and grow vigorously. We live in Baltimore, MD. Our first frost is usually mid-October. Here is a link to the photo of about 1/3 of my Viola striata planting. |
Here is a link that might be useful: Viola striata in the Spring.