Reportedly known as Baltimore or Philadelphia Oakleaf in the 1880s. Withstands hot weather, never bitter. Excellent quality even in late summer. Looseleaf, 50 days.
This crop can be direct seeded into the soil after the last spring frost. You can also start plants indoors 4-6 weeks before the last frost date.
You can harvest the outer leaves of this plant as they mature or wait till it produces a full-sized head. To prevent the plant from bolting, keep the leaves well watered and cool.