Tomatillo seeds. Mexican green tomato seeds. Plant them early spring and enjoy of these delicious tomatillos by Summer. The tomatillo is a close relative of Cape Gooseberry and a distant relative of tomato. It grows a thin husk (or lantern) around the fruit that must be peeled prior to using the fruit. Tomatilloes are easy to grow and are an important ingredient in salsa and many Mexican dishes. They grow in similar way to tomatoes but are hardier and less prone to diseases such as fusarium or verticillium wilt.