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miracle gro raised bed gardening

Raised Bed Gardening

Discover a simple, versatile way to garden that lets you grow more while requiring less work.

Raised Bed Gardening

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 this handy chart as a guide.

Woman tending her raised bed garden.

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.

Garden Soil Chart: Explains how much soil you need depending on the size of your raised bed.

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!

Caring for Your Raised Bed Garden

A month after planting, be sure to give your vegetables, herb, and flowers the nutrition they need by feeding them with Miracle-Gro® Raised Bed Plant Food, following label directions. When used in combination with Miracle-Gro® Raised Bed Soil, you see even more bountiful results (vs. unfed plants).

The soil in your raised beds will break down over time; however, you don’t need to replace all of the soil in your raised bed garden to have beautiful, vibrant, or bountiful plants. Before planting the following growing season, add Miracle-Gro® Refresh™ Soil Revitalizer to your old soil, following package directions. It is specially formulated with ingredients to help restore soil structure, renew water retention, and replenish essential nutrients.

Miracle-Gro® Raised Bed Soil
Learn More
Miracle-Gro® Raised Bed Plant Food
Miracle-Gro® Raised Bed Plant Food
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Related Articles

Whether you are just starting out, maintaining or troubleshooting, you'll find advice and answers here for all your gardening needs.

Person planting seeds in a raised bed.
Related Article
How to Grow Vegetables in a Raised Bed

Learn what you need to know to grow a big harvest of vegetables in your raised bed garden.

Learn More
Two empty pots sitting side by side in a backyard.
Related Article
Best Soil to Use in Containers and Raised Beds

Get your container or raised bed garden off to a solid start by using the right soil.

Learn More
Illustration of a man picking tomatoes off a tomato plant.
Related Article
Growing Tomatoes

We teach you all about how to grow tomatoes.

Learn More
2021-03-04
2021-03-04
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Main navigation (US)

  • Shop Products

    • Soils

    • Plant Food

    • Garden Bundles

    • Garden Tools

    • Aerogarden

    • Bonnie Live Plants

    • Flowers

    • Miracle-Gro® Twelve™

  • Learn and Grow

    • Gardening Basics

    • Container Gardening

    • Raised Bed Gardening

    • Community Gardening

    • Edible Gardening

    • Flowers & Landscaping

    • Fruit, Vegetable & Herb

    • Garden Planning

    • Indoor Gardening

    • Rose & Flower Gardening

    • Garden Recipes

    • Small Space Gardening

    • Trees, Shrubs & Landscaping

    • Water Friendly Gardening

    • What's in our potting mix?

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