Root Problems

It is difficult to identify a wilted plant, but it looks like a veronica (speedwell). Most veronicas are tough as nails, so this is perplexing.The most common cause of afternoon wilting is almost always a problem with the roots or crown of the plant. It is common in plants that do not for some reason have an adequate root system. Are the liatris and echinacea that are affected nearby? Mole run or some other rodent tunnel under the plant, so the roots are hanging in the air is one possible cause. Excess nitrogen fertilizing actually burning the roots (but there is usually some leaf browning as well) could be another cause. Compacted soil so the water only penetrates an inch or so could also do it. I know you’ve tried to take pains with the soil, but just to make sure, push a screwdriver into the soil. If that is difficult, your soil may be compacted. You may want to consult an experienced local gardener who can actually visit your garden. Since we are only making educated guesses, we’d love it if you contacted us again when you find out the actual cause. It will help us help the next person with a similar problem.