Include your email address to get a message when this question is answered. In summer, when the weather starts to heat up the lettuce tends to bolt, to reduce this tendency keep your potted lettuce plant in a cool spot and provide proper shade. Soaking your lettuce transplants in cold water overnight before potting them can increase the chances of their survival. Also, make some holes in the plastic bag to allow water to drain. Healthy and continuously productive, this crispy salad green has many qualities that make it a blessing for health. Lettuce is a surprisingly easy crop to grow indoors. Keep the plants 4-6 inches apart (depending on the size of the leaves you want and cultivar). This can result in root rot, stunted growth, and disease. Mix 1 part perlite (white volcanic glass that is used to lighten soils), 1 part vermiculite (mineral that is used in potting soils to increase water retention), and 1 part compost to create a very loose mixture that is pretty close to what you can buy in the store. Lettuce seeds can be sown straight into the garden (or pots) or you can start them off in trays or punnets first. If you are planning on planting your lettuce during the warmer parts of the year, soak the seeds or the root systems of your seedlings in cool water for at least 16 hours to increase the likelihood of germination. Lettuce is a cool season crop and growing lettuce in pots is possible from spring to fall in most of the regions. When fertilizing, be sure to follow manufacturer’s instructions as both over and under fertilization can be harmful. Lettuce is one of the vegetables that is very easy to grow in pots and you can even grow it in a small container. To grow lettuce indoors, start by filling a pot with a seed starting soil mix to ensure good drainage. It matures early and has soft leaves with a mild taste. Remember that lettuce is mostly water so be certain that your soil is consistently moist, but not wet. As their shallow roots don’t need deep soil, they do best in wide and shallow containers. Make small holes in the soil where you want to put the plants. This method is often called the cut-and-come-again method. These little lettuce plants won't take up too much space and you get so many of them too! Although a romaine lettuce can grow in containers as small as a 4-inch pot, growth is optimum in larger containers where the soil doesn't dry as fast and there's room for root growth. % of people told us that this article helped them. And I don’t even need a greenhouse for that. There are different varieties of Romaine lettuce to choose from, but Parris Island, or Cos, is the most popular. Growing lettuce is easy and may be one of the most rewarding crops to grow all year long. I have all my vegies in wicking beds so they never run out of water. This may cause root rot. 2 things I have to watch are they run out of neutrients fast and I have to make little covers for water inlet and outlet so I don’t breed mosquitoes and cane toads. Romaine lettuce also tends to do pretty well indoors. You can use any material for pots such as plastic, clay or terracotta pots. In this video, I show you how to grow lettuce from seed indoors, and harvest it in just one month! I often grow lettuce from seed in little containers like these. Lettuce needs plenty of roots to spread its roots, so make sure you have a pot that's at least 6 to 12 inches. These lovely little lettuce plants are ready for the beds! 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