How to Start A Square Foot Garden

First, you have to build out a large square. Using 6-inch wide untreated lumber works the best, but any material can be used. Make sure to put down a weed barrier so weeds and grass don’t grow up into the raised bed. The best size for a square foot garden is 4×4 feet. You can be creative though in your design, but 4 feet across is best for adults and 3 feet for kid’s gardens as their arms just can’t reach that far. Here are 10 raised bed garden ideas.

The soil that you put into your square foot garden needs to be full of nutrients and is best when it is a blend of different materials. Here is a great garden soil recipe for your raised bed: Equal parts of potting soil or compost, vermiculite, and peat moss. For the potting soil, I often will mix a few different types together with compost to give a good variety of nutrients to the mix. Make sure to water down this mixture until you can squeeze a handful of it and no water drips out – that’s how you know that it has been completely absorbed.

Once you have the soil in the planter box, add a 12” grid on top using tape or string, so you know where to plant.

Guide to help you know how many plants go into each square:

Small: 16 plants per square for 3” spacing
Medium: 9 plants per square for 4” spacing
Large: 4 per square for 6” spacing
Extra Large: 1 per square for 12” spacing

Use the seed packet as a good guideline to know how many seeds to put into a square. Many people love to grow tomatoes and since they are heavy nutrient eaters, one per square works best. The same goes for pepper and squash plants. Smaller plants like radishes and carrots can have 16 per square, sometimes more depending on the varieties chosen.

There is very little weeding that needs to be done using the square foot gardening method. If you want a natural way to keep pests out of your garden, plant a few marigolds in the squares with the other plants as they are a natural pest deterrent – this is also called companion planting. Another great companion planting is to plant corn and green beans together and let the beans grow up the corn stalks instead of having to stake them. I will also plant garlic throughout my raised beds as they keep away a lot of bugs too!

Experiment with your square foot garden and try different plants together. This concept of gardening is a lot of fun to do and easy to get the whole family involved in!

More Square Foot Gardening Resources:

You can read more about square foot gardening in All New Square Foot Gardening by Mel Bartholomew.”

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