Filling a Raised Bed Garden

Here are some tips and resources for when you need to fill a raised bed vegetable garden:

START YOUR BED WITH LASAGNA GARDENING METHOD (aka SHEET MULCHING)

Lasagna gardening is a no-dig, no-till organic gardening method that results in rich, fluffy soil with very little work from the gardener. The name “lasagna gardening” refers to the method of building the garden by adding layers of organic materials that will “cook down” over time, resulting in nutrient-rich soil that will help your plants thrive.

Alternate nitrogen-rich (“green”) and carbon-rich (“brown”) material available to you, such as grass clippings, vegetable and fruit scraps, coffee grounds, tea leaves and bags, garden trimmings, cardboard, wood chips, small branches, straw, pine needles, newspaper, leaf mulch, compost and aged manure (from herbivores only). Note: we do not recommend using peat moss, which is not a readily renewable resource.

IF YOU WANT TO PURCHASE SOIL, YOU NEED TO KNOW: HOW BIG IS MY CONTAINER?

You may be surprised at how much medium you need to fill a raised bed or other container. You might also decide to purchase part of your lasagna ingredients. For example, if you do not have compost readily available, you might purchase enough good quality compost to account for 2” of depth in your bed (it is not required for success). Note that bulk is often sold by the cubic yard, and bags of soil or amendments are sold by the US quart (dry) such as in 20 or 50 QT bags.

Calculate how much medium you need by volume/cubic feet:

Convert cubic feet in US dry quarts or in cubic yards (or make other conversions):

DOWNLOAD Filling New Raised Bed

Resources provided by Master Gardener Catherine Connor.