In the spring I went to a gardening store and bought 2 little bunches of onion starts. About 3 in. long, 50 to a bunch with green stems. I bought Walla Walla and Copra. I started them in plastic cups and transplanted them. Somewhere I lost the tags that told which kind was which. I know in the garden that one bunch is planted in one area and the other bunch is planted in another area, but I can't tell which is which. They are about 3 inches in diameter now, and I want to eat the Walla Walla 1st because they won't store through the winter like the Copra will, but I can't tell which ones to eat. I have tasted both, but I can't tell the difference now. Can you help me tell the difference?