Lettuce is a popular salad green that can be easily grown from seeds at home. It is a cool-season crop that grows well in the spring and fall. Here is a step-by-step guide on how to grow lettuce ...

From the time I started growing vegetables in the 1970s until last year, I have grown only leaf lettuce, some varieties of which are referred to as cut-and-come again.

Sow seed: Sprinkle seeds 1/2 to 1 inch apart onto smooth, moist potting mix. Gently press in or cover with no more than an eight-inch of fine, light soil. Lettuce seeds need light to germinate.

Lettuce seeds won’t sprout when soil temperatures are above 80°F but they will start to germinate as low as 40°F, making it ideal for early and late season planting.

Many varieties grow better early or late in the season. Cyrus McCrimmon, ... It doesn’t take a horticultural alchemist to transform lettuce seeds into a patch of crispy leaves.

Astronaut Tim Peake carried packets filled with salad rocket seeds into space. (Image credit: ESA) The experiment sent 4.4 pounds (2 kilograms) of Eruca sativa (arugula) seeds to the space station.