When the self-sown seedlings begin to germinate, that's when you should be planting your other greens, like kale and swiss chard. Planting in full sun will generate faster leaf production, but can encourage bolting during hot weather. Sow seeds thinly, 13mm (in) deep, in rows 30cm (1ft) apart. Give lettuce plenty of room to mature by spacing plants 8 to 12 inches (20 to 30 cm.) apart. You can also grow lettuces in containers and growing bags, but be sure to water regularly. Spacing: 6 to 12 inches between plants and 12 to 14 inches between rows. For optimal growth, lettuce requires 1 to 2 inches (2.5 to 5 cm.) of rain or supplemental water per week. This technique of letting certain plants bolt and then set their own seed also serves as an indication of when you should be planting other crops. Transplant Outdoors: Between 2 weeks before and 2 weeks after the last frost date.
You'll have a lettuce (or radish or spinach) crop before you know it and you haven't even planted! Lettuce bolts more readily if exposed to temperatures below 50 degrees F during the 2- to 3-leaf stage (the first three weeks after germination). When spring comes and the environmental conditions are perfectly right - think adequate warmth, sunlight and moisture - those self-sowed seeds will begin germinating.Īt this stage in your early spring garden, this is when you can go out to your garden and "edit out" any seedlings you don't want, leaving the strongest ones. This is especially helpful when growing vertically, because starter plants add up fast and theres a lot of pockets to plant. This late summer, as you see this happening in your garden, decide which crops you'd like to grow again and let them bolt and self-sow their seeds. Inside those flowers are seeds and those seeds grow more plants. In a few words, we start sowing indoors and transplant in the field or greenhouse, in most regions after the first frost. Plant a new crop ever 34 weeks for a continual fresh lettuce harvest. Scatter the seeds one half to an inch apart. Seeds and transplants can go directly in the ground mid. The idea is to let some of these plants bolt - this happens when the plant is done growing. Plant enough to last a couple of weeks and a few extras to allow for some that wont make it. Though the instinct to "clean up" your garden as crops are done growing is strong, resist it! Instead, try letting certain vegetables, like lettuce, spinach, radishes and fennel, self-sow. This is also a good time to think ahead towards spring and how you can save yourself some time and effort in next year's garden. If things have gone well this growing season, you're probably slicing fresh tomatoes on everything and you've got cukes up to your ears.
Late summer in the garden means you can reap the harvest of your earlier work. Evaluate your seed trays The tray pictured above is planted with tomatoes in 4-inch pots and most of the tomatoes have come up (they're pretty easy).
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