Roots Organics Formula 707, 1.5 cu ft

Large-Container Potting Soil With High Water-Holding Capacity, 1.5 cu ft

Large containers dry out unevenly compared to smaller pots, and a standard potting mix built around a smaller container's watering rhythm can leave a large container's outer root zone gasping for moisture between waterings. Roots Organics Formula 707 is built specifically for large-container gardening, with greater water-holding capacity and less added perlite and pumice than Roots Organics' standard potting mixes.

This 1.5 cu ft bag suits growers filling one or two large containers or testing Formula 707 at a smaller scale.

Key Features & Benefits

• Greater water-holding capacity — built specifically for large-container gardening.
• Less perlite and pumice than standard mixes — shifts balance toward moisture retention over aeration.
• Blended with worm castings, bat guano & kelp meal — natural fertility ingredients.
• Includes mycorrhizae — supports root development from transplant onward.

Who Should Use This

Growers running large container setups who want a ready-to-use soil with higher water-holding capacity and less added perlite, so containers hold moisture longer between waterings, will find Formula 707 suited to that setup.

About Roots Organics

Roots Organics builds its soil and nutrient line, including Formula 707, under Aurora Innovations, Inc., a company founded in Eugene, Oregon, in 2000 that shifted its focus toward soil and coco-based growing products early in its history.

Frequently Asked Questions

What makes Formula 707 different from a standard potting mix?

It's built with greater water-holding capacity and less added perlite and pumice than Roots Organics' standard mixes. That shift is specifically for large-container gardening, where the outer root zone can dry out faster than the center.

What ingredients are in Formula 707?

It's made from coco fiber, coarse peat moss, perlite, pumice, composted forest material, worm castings, bat guano, fish bone meal, soybean meal, kelp meal, and mycorrhizae. Those natural ingredients supply both structure and fertility.

Does it include mycorrhizae?

Yes, mycorrhizae is included in the mix. It supports root development starting from transplant rather than requiring a separate inoculant step.

What sizes does Formula 707 come in?

It's available in 1.5 cu ft and 3 cu ft bags, a 3 gal bag, and a 54 cu ft tote for larger operations. The tote is built for filling many large containers from a single commercial delivery.

How does watering frequency compare to a standard potting mix?

Because Formula 707 holds more water and uses less perlite and pumice, containers generally need less frequent watering than with a standard mix. Growers should still check moisture at the container's edge, since large containers can dry unevenly.