What's a salad without lettuce? Lettuces are generally classified as butterhead, cos, crisphead and loose-leaved varieties. Butterheads form loose heads with soft leaves. They are generally easier to grow than the others, being tolerant of poorer conditions. The crisphead varieties include the various types of 'Iceberg', store well in the fridge and are more resistant to bolting in dry weather. The cos types, with a more upright habit, are often the tastiest. Finally, the loose-leaf varieties don't produce heads at all - rather leaves are picked a few at a time, leaving the plant to produce more. It's said about every crop, but the key to growing lettuces is to sow little and often to avoid a glut.
|pH||6.0 - 7.0|