Parris Island Cos has steadily gained in popularity since its introduction. It has resistance to tipburn, tolerance to mosaic, and is medium-to-slow-bolting. 10-12 in. heads of slightly savoyed leaves with a creamy white heart. Harvest in about 72 days. Germination rate about 80% or better. David’s Garden Seeds is a Veteran owned business that has been offering quality seeds since 2009.