35 – 45 days til harvest. Compact plants with loose, crumpled reddish-green leaves. Ruby Red is the darkest red of all red lettuces. Won’t fade and is heat resistant. A very decorative plant. These non-GMO Ruby Red seeds grow into greenish red, loose leaves of lettuce. The Ruby Red can be grown in zones 3-9. The leaves of the Ruby Red have a mildly sweet flavor.