Add the onion and cook 2 minutes. Then add the garlic and cook another minute.
Stir in the potatoes and carrots. Cover, turn the heat to low, and cook until vegetables are almost tender (about 4 minutes). If the vegetables start to brown, add a tablespoon or two of water.
Add the asparagus, peas, radishes, salt, pepper, and dill. Cook, stirring often, until just tender (about 4 more minutes).