Seeds are small plants, wrapped up in a package with the things they need to get a good start in life. Seeds come in many shapes and sizes. Some are hard as a rock. Some are hidden in fruits. Some are smooth. Some are prickly. Some are so tiny they look like dust. In Minnesota about 1,400 native plant species produce seeds in summer or fall, as they prepare for cold weather. Safe inside a seed, a tiny new plant waits out the winter. Then it sprouts in spring when sun and rain are plentiful.