Green Zebras. Bloody Butchers. Big Boys. Polish Linguisas.

Organic gardeners will have a literal field day with these and other tomato varieties at Tomatomania, billed as the world’s largest tomato seedling sale. The event will tour select cities from March 20 to May 23.

If the tour misses your area, you may purchase several collections online—from heirlooms to paste tomatoes used in cooking—from Litchfield, CT-based White Flower Farms, which also sells organic tomato fertilizer. Shipping begins next month.

Tomatomania proprietor Scott Daigre, owner of PowerPlant Garden Design in Los Angeles, will sell his book, Tomatomania! How to Grow Tomatoes Successfully in Southern California, at the shows.

Daigre also teaches a Crazy for Tomatoes! class at California State University, Northridge. The course covers soil preparation, staking, fertilizing, saving seeds and getting the best production.