How Much Soil Does Your Raised Bed Garden Need?

The amount of soil you need to purchase to fill your raised bed garden depends on the size and depth of your bed. Use the handy chart below to determine how many bags of Miracle-Gro® Raised Bed Soil to purchase.

If you are not sure how high to make your raised bed, consider what you want to grow. Some plants are deep rooted, while others only require shallow soil to cover their roots. If you plan to grow different kinds of plants as time goes on, choose a bed height that will work for the deepest rooted plants. For example, if you plan to grow herbs this season, but hope to raise some tomatoes next year, you will want to build (or buy) a bed that is 20” high.

Here’s a guide to the raised bed height needed to grow some popular vegetables, herbs, and flowers:

What grows well in a 6” high raised bed:
Arugula, leeks, lettuce, onions, radishes, spinach, strawberries, basil, chives, cilantro, dill, mint, oregano, parsley, thyme, marigolds and other annual flowers

What grows well in a 12” high raised bed:
Beans, beets, broccoli, Brussels sprouts, cabbage, cantaloupe, carrots, cauliflower, collards, cucumbers, garlic, kale, summer squash, Swiss chard, turnips, lavender, rosemary, sage, borage, calendula, cosmos, lantana, nasturtiums, snapdragons, sweet alyssum (plus everything in the 6” list)

What grows well in a 20” high raised bed:
Artichokes, asparagus, eggplant, okra, parsnips, peppers, sweet potatoes, tomatoes, watermelon, winter squash, pineapple sage (plus everything in the 6” and 12” lists)

When growing vegetables and herbs, consider planting young plants from Bonnie Plants® instead of seeds. These vigorous plants are already well on their way to maturity, so you'll automatically be closer to harvest time!