lettuce (romaine) 'Chartwell'

Grow in full sun in moisture-retentive soil. Soil should be reasonably fertile so you can improve soil by adding organic matter, such as well-rotted manure, in the autumn. Lettuces grow best on soil that is close to neutral so if you have very acidic or alkaline soil you may want to consider raised beds, containers or improving the pH of your soil. Water when the soil is dry, ideally early in the morning. Harvest from June until October. See lettuce cultivation for more information.

No pruning required

Propagate by seed, sowing from March until August. Seed germination is poor if soil temperatures are very warm therefore if sowing in ho t weather sow in the evening and water well after sowing.

May be susceptible to birds, slugs, snails and lettuce root aphid.

Shows some resistance to lettuce downy mildew but may be susceptible to grey moulds. Lettuce mosaic virus can affect overwintering crops.