Bed Sizes: 

The best bed depth is 8” to 12” for all vegetables, this allows room for root vegetables and proper drainage for surface roots. If deeper, use an organic mulch/topsoil mix for the foundation or filler.  

4’x4’x8” = 10.66 cu ft. / 4’x4’x10” = 13.33 cu ft. / 4’x4’ x12” = 16 cu ft. 

4’x8’x8” = 21.33 cu ft. / 4’x8’x10” = 26.33 cu ft. / 4’x8’x12” = 32 cu ft. 

The best mixture percentage is 60% soil, 30% compost, 10% organic matter and nutrition.  

Throughout the growing season the soil can be amended with Espoma, Down to Earth, Fox Farm, True Organics granule organic fertilizers to add back nutrition taken by plants or leeched out.  

Individual use mixtures: 

Espoma Raised Bed Mix – 1.5 cu ft. $14.99 

Fox Farm Ocean Forest Soil – 1.5 cu ft. $26.99 

Professional Potting Mix – 1.5 cu ft. $12.99 

Amendments to individual use mixes or mixed: 

Cotton Burr Compost – 2 cu ft. $11.99 

Mushroom Compost – .75 cu ft. $7.99 

One Step – 1.5 cu ft. $9.99 

Peat Moss – 3.8 cu ft. $29.99 

Topsoil – .75 cu ft. $2.69 

Example mixes for 4’x4’x8” 10.66 cu ft. bed 

4 x Topsoil – 4 x Espoma Raised Bed – 1 x Cotton Burr Compost = 11 cu ft. $82.71 

4 x Fox Farm Soil – 3 x Mushroom compost – 1 x One Step = 10.5 cu ft. $133.92 

7 x Espoma Raised Bed = 10.5 cu ft. $90.93 

Can mix any of the above to equal the cubic feet of soil you need for any size bed. 

---