Typical storage time 1 to 4 weeks. Lettuce . Valmaine lettuce is best when used right after harvesting. ... Upstart University is not an accredited institution of higher learning. Some producers seed the lettuce directly into the field.

... Organic leaf lettuce is hand harvested (field-packed) under contract 70 to 80 days after planting. Harvesting a large crisp head of lettuce from the garden is a wonderful thing, but for faster yields and longer harvests, a cut and come again lettuce bed can put salad on … Lettuce is best harvested in warm weather, but this is also when demand for salad peaks, resulting in shortages at the start of a fine spell. Lettuce are hand harvested usually in the cool early hours of the morning. Perfect for lettuce soup, salads and many culinary applications it is fast growing requires regular watering, … Although lettuce is produced in many states, California and Arizona dominate U.S. production. It is important not to delay harvesting because this can result in rapid fall in quality, particularly during summer production. Lettuce varieties are selected for specific planting periods and disease resistance. Lettuce can be harvested quickly as a batch by taking the whole head. Lettuce (Lactuca sativa) is an annual plant of the daisy family, Asteraceae. After the top portion of the head is obtained, a center section of the top portion of the head is removed to leave a cup-shaped portion of the head. If seed stalks appear, pick the lettuce immediately and store in the refrigerator to prevent bitterness. Iceberg (crisphead) varieties take longer and should be harvested as soon as a head develops but before outer leaves turn brown. Field lettuce is seeded in a greenhouse and planted outside as soon as the ground can be prepared. A head of hydroponic lettuce grows from seed to harvest in 35 days, ... How to Harvest Hydroponic Lettuce With or Without the Roots. Lettuce is a spring plant that is tolerant to temperatures 46 F to 64 F. The plant is grown commercially or in private gardens. Solid lettuce heads are cut, trimmed to 4 to 5 wrapped leaves and packed into waxed cartons, 12 to 16 heads per carton. SAMPLE COSTS TO PRODUCE ORGANIC LEAF LETTUCE - Central Coast Region 2009 ... are commercially broadcast over the field prior to the primary tillage operations. There are two main types of lettuce – hearting lettuces have a dense centre, while loose-leaf lettuces have open leaves and no heart. By planting too late, the lettuce may bolt.

But harvesting and handling lettuce increase shelf like can be tricky. Harvesting lettuce. Harvesting takes place only … Romaine and Butterhead lettuce can be harvested in about 60 to 70 days from planting. The UK season for wholehead lettuce begins around the middle of May and finishes at the end of October. Lettuce can be grown in fields or in greenhouses. There are so many types of lettuce to choose from – all with different colours, flavours and textures – that salad need never be boring! Approximately one month before the temperatures begin to rise, stop planting lettuce because most lettuce varieties take 30-60 days until they’re ready to be harvested. Lettuce is most often used for salads, although it is also seen in other kinds of food, such as soups, sandwiches and wraps; it … The gypsum and compost are blended and applied in a single operation.