59% Germination - Non-refundable clearance seeds. 40 Days to maturity. Red Romaine Lettuce Seeds. Lactuca sativa. Red Romaine Lettuce has long crunchy spoon shaped leaves that start green and fade to profuse purple/red. Leaves are 12 inches tall and the plant is about 10-12 inches wide. This is a great seller at farmers' markets for its color and holds up well under transport. Approx. 25,000 Seeds per ounce. Click here to view regularly priced, high germination seed.