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Does romaine lettuce need full sun?
Select an outdoor lettuce planting area that gets partial shade and 4 to 6 hours of full sun per day. Romaine lettuce grows best between 45 and 80 degrees Fahrenheit. Discard any plant debris and let the soil dry completely.
How long does lettuce take to grow in greenhouse?
Place your trays in your greenhouse, polytunnel, cold frame or windowsill to germinate. They should be ready to plant out in about 4 weeks. It is crucial to harden off lettuce raised indoors before planting out.
Does lettuce grow well in greenhouse?
Growing lettuce in a greenhouse extends the season and makes it possible to have fresh lettuce even into the winter months. Lettuce requires cool temperatures but is susceptible to frost. Leaf lettuce grows well as a greenhouse crop. One type of leaf lettuce can be cut several times during its growing season.
How do I know when romaine lettuce is ready to pick?
Squeeze the heads to check. An immature romaine head is loose and compresses easily, while an overly ripe head feels hard to the touch. Harvest the lettuce when it reaches between 6 and 8 inches tall, with leaves that begin to tighten. Check the romaine in the morning when it nears harvest time.
Why do farmers grow lettuce in a greenhouse?
The obvious reason to grow greenhouse vegetables, flowers, and herbs is to have crops at a time of year when they can’t be grown outdoors. Out-of-season tomatoes, cucumbers, peppers, eggplant, lettuce, basil, and other vegetables command high prices in some markets. Heating will be your biggest cost, followed by labor.
How can I grow lettuce in a greenhouse?
Some people fill a bit of plastic guttering with soil/compost and when the seeds have grown big enough to handle you can slide the plants out into single large pots or into the greenhouse or even outside, doing it this way the roots dont get disturbed to much as lettuce dont like their roots disturbed it can make them run to seed.
What kind of soil do you need for romaine lettuce?
Your lettuce will need plenty of sun, and the soil should be moist, well drained, nutrient rich, and be above 40 °F (4 °C). You can grow Romaine in a pot, a planter, or in the ground, so store-bought or garden soil will both work just fine. Ideally the soil will be between 55 °F (13 °C) and 65 °F (18 °C).
How long does it take romaine lettuce to grow from seed?
Romaine requires 65-70 days to mature from seed. Although heat tolerant, Romaine grows best in cooler climes and prefers moisture rich, well-drained soil. Giving the plants plenty of water and good soil will speed growing. The faster Romaine grows, the crisper the leaves.
What’s the best way to transplant romaine lettuce?
When the sprouts have grown a few small leaves, pull some to create a spacing of 12 inches (30 cm) to 18 inches (46 cm) between plants. If you are transplanting, use this range as a guide for spacing the plants when moving them into their new home.