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How to Grow Lettuce Indoors

ritau
04月06日
Boring at home? Let's do some indoor gardening!
1. Choose a lettuce variety that thrives indoors. Although most lettuce plants can stay healthy indoors, you'll have better success with some varieties over others. Buy any of these lettuce varieties, which are known for growing well inside, from a garden center or plant nursery:
Garden Babies/Merlot/Baby Oakleaf/Salad Bowl/Lollo Rosa/Black-Seeded Simpson/Tom Thumb/Red Deer Tongue

2. Fill a pot with a seed starting soil mix. Seed starting mixes are lightweight, they help your plants’ roots grow, and they're well-draining to prevent overwatering. If you cannot find a seed starting mix, you can also create a soil made from equal parts peat moss or coir, vermiculite, and sand.
Each lettuce plant requires 4–6 in (10–15 cm) of space and a depth of about 8 inches (20 cm). Choose a pot that can accommodate these measurements.
Purchase pots with drainage holes on the bottom. Place a saucer underneath the pot to catch draining water.

3. Plant your seeds approximately 1 in (2.5 cm) apart. Dig a 4–6 in (10–15 cm) deep hole and place your seeds inside at about 1 in (2.5 cm) apart. Limit your seeds to 4 per pot to avoid overcrowding the lettuce as it grows. If you want to plant more than 4 seeds, prepare several pots ahead of time.

4. Sprinkle your seeds lightly with potting soil and water. Take a handful of potting soil and gently sprinkle it over the newly-planted seeds. Fill a spray bottle with water and gently mist the seeds to avoid washing them away.

5. Plant lettuce seedlings if you don't want to wait for seeds to sprout. If you don't want to wait for seeds to sprout, you can plant lettuce seedlings instead. Use the same technique as you would for lettuce seedlings, planting no more than 4 per pot.

Tips to care for

*Grow your lettuce in room temperature conditions. Lettuce grows best at temperatures around 65–70 °F (18–21 °C). Turn on the air conditioner or heater as needed to keep your plants at an even, sustainable temperature.

*Place your lettuce plant near a sunny window or a fluorescent grow light. Lettuce plants grow best with direct sunlight. If you're in a climate with very little sun, purchase a grow light from a plant nursery and position it about 12 inches (30 cm) overhead.

*Fertilize your lettuce 3 weeks after planting it. Lettuce needs nitrogen-rich soil to grow, so spray a liquid fertilizer on the plant 3 weeks after you planted it, or when the first leaves grow on the plant. Spray the fertilizer mainly near the soil, avoiding the lettuce leaves to prevent burning them.

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