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How to Grow Lettuce on a Wall

DIY Gutter Container Garden
Mavis Butterfield

In case you haven't heard, all the hipster gardeners are growing lettuce on walls these days. Growing lettuce vertically is perfect for those with limited garden space, whether that be a small patio or a balcony. With a very small investment (less than $15) and no fancy tools, you can build, plant and harvest your own greens (and look totally cool while doing it).

Attach L Brackets to the Wall

How to install an L bracket
mavis butterfield

Using a tape measure, space L brackets 3' apart centered on the wall where the gutter will be placed using 2 #12x1-1/2" screws per bracket. Space gutters between 12"-18" apart to allow plenty of room for lettuce seedlings to grow.

Place End Caps on Gutters

How to put end caps on gutters
mavis butterfield

Wearing gloves, place gutters on the ground and place end caps on the gutters to retain the soil.

How to Install Gutters on Wall

Gutters mounted on a wall
mavis butterfield

Set galvanized gutters on L brackets. The weight of the soil and plants will hold the gutters in place so there is no need to drill additional screws into the bottom of the gutters unless you feel it is necessary. By not drilling additional screws into the bottom of the gutters, you are also allowing for easy removal of the gutters during the winter months for storage.

  • In case you haven't heard, all the hipster gardeners are growing lettuce on walls these days.
  • The weight of the soil and plants will hold the gutters in place so there is no need to drill additional screws into the bottom of the gutters unless you feel it is necessary.

Line Gutters with Pea Gravel and Potting Soil

Pea gravel in gutter
mavis butterfield

Line gutters with 1" pea gravel then fill the remaining space with a good potting soil blend. The pea gravel is used to help aerate the soil and to allow for proper drainage.

How to Plant Lettuce

Planting lettuce on a wall
mavis butterfield

Remove lettuce seedlings from planting containers and plant to soil level 6 to 12 inches apart. Keep in mind lettuce grows best during the cooler months of spring and fall when temperatures are between 45 and 65 degrees. If planting lettuce seeds, plant to a depth of 1/4 inch, cover lightly with soil and water.

Planting Location

Lettuce growing in gutters
mavis butterfield

For best results, plant lettuce in a cool and shaded area to prevent wilting.

Watering Care and Replanting

Lettuce in a gutter
mavis butterfield

Lettuce has a shallow root system so water regularly at the soil level and harvest when plants have reached their maturity (anywhere from 40-60 days depending on variety). To re-plant gutters, simply remove the old root system and add new lettuce seedlings. If you would like to start lettuce from seed, add a little more potting soil and follow the directions on your seed packet.

  • Line gutters with 1" pea gravel then fill the remaining space with a good potting soil blend.
  • Lettuce has a shallow root system so water regularly at the soil level and harvest when plants have reached their maturity (anywhere from 40-60 days depending on variety).

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