I found a horde of small tubers hidden under my sage plant in the garden. They are small, smooth, purple and white, varying shapes, no skin, no stem. They are piled in the soil at the surface, not buried and not attached to any plant. They have been there almost all summer but have not rotted or rooted. The texture when cut is crisp and moist similar to a radish or water chestnut, no smell. Do you have any idea what they could be? I suspect an animal stashed them there but I'm curious about where they came from. Thanks for your help,
We viewed your photos and we cannot make an accurate identification. Looks like a possible potato but we cannot say for sure. You can plant some and see what develops.