A 2007 study titled "Socking It to Strawberry Root Rot" by the United States Department of Agriculture (USDA) Research Service showed that perennial strawberries planted in GardenSoxx are less susceptible to black root rot and produce more marketable fruit than those planted in unfumigated, unamended soils.
The USDA also rated the root health of the strawberries by using a scale of 1 to 5—with 5 being totally free of root rot. All but one GardenSoxx scored 4 or 5, while the strawberries grown without the compost ranged from 1 to 3, except for one rating of 4.