Horticultural Soil spec-aggregate Rule of thumb: 1 cubic

Rule of thumb: 1 cubic yard covers about 100 square feet at 3" depth (compacted)

#610 or Mass DOT M1

but for the structural base under pavers you want Dense Pack 3/4 inch to minus or #610 Stone — those have fines mixed in to compact tight

or stick to walking-style "pad" applications where the stone is just for the look

Don't substitute — mortar made with concrete sand is too gritty

Horticultural Soil spec-aggregate Rule of thumb: 1 cubicHorticultural Soil Mix The Blend Nurseries Actually Use Horticultural Soil Mix is the upgrade for gardeners and growers who want what nurseries use a premium peat based blend with vermiculite and perlite for the air pockets and water retention that root systems crave. It's lighter and more porous than a standard garden mix, which makes it the right call for container plantings, propagation work, and the kind of high yield raised bed setups serious