Lettuce 'Royal Oakleaf' (Organic)
First listed in 1771, the thick sweet midribs withstand the heat better than any other loose leaf lettuce. Picking the outer leaves will extend the harvest.
The best lettuces are grown fast. Grow them in beds that have just been vacated by peas or beans as all leaf crops, especially lettuce, enjoy plenty of nitrogen. Loose soil with plenty of organic matter will retain moisture and added potash will see them grow without check. Premature bolting and subsequent bitterness is usually the result of stress caused by poor transplanting techniques, damage to their shallow roots, lack of fertilizer or lack of water during hot periods. Mulch well to conserve moisture.