| Lettuce Type: | Iceberg |
| Plant Habit: | Herb/Forb |
| Life cycle: | Annual |
| Sun Requirements: | Full Sun |
| Water Preferences: | Mesic |
| Leaves: | Other: Shipping-type crisphead variety. Resists heat and downy mildew. Some resistance to tipburn. Crisp, slightly peppery leaves are medium green to medium-dark green and somewhat frilly. |
| Uses: | Vegetable Salad greens |
| Propagation: Seeds: | Self fertile Needs specific temperature: 40F to 75F. Fastest from 60F to 70F. Days to germinate: 2-15 Depth to plant seed: 1/8 inch deep Sow in situ Start indoors Can handle transplanting Other info: Lettuce seldom cross-pollinates. It usually self-pollinates before opening. "Great Lakes" parentage, adapted to coastal California early spring harvest. Released 1960-1964. The name 'Calmar' combines "California" and the Spanish word for sea ("mar"). |
| Pollinators: | Self Flies |
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