Roots Organics Formula 707 Soil 3.0 cf *In store Pick Up Only

Roots Organics Formula 707 is a ready-to-use potting soil designed for fast-growing, heavy-feeding plants. Packaged in a 30-gallon grow bag containing just under 20 gallons of finished mix, it combines peat moss, coco fiber, compost, perlite, and pumice into a blend with greater water-holding capacity than lighter mixes — while still leaving enough structure for growers who want to customize with amendments. Available for in-store pick-up at Premier Hydro.

Formula 707 Specifications

The table below lists confirmed specifications derived from the product description and manufacturer documentation. All values are sourced from the canonical product row.

Specification	Value
Brand	Aurora Roots Organic — Roots Organics line
Product Volume	3.0 cubic feet (approximately 20 gallons of finished mix)
Packaging	30-gallon grow bag — plant directly in the bag
Base Ingredients	Peat moss, coco fiber, compost, perlite, pumice
Water Retention Profile	Higher than standard mixes; reduced perlite and pumice ratio
Intended Plant Type	Fast-growing, heavy-feeding plants
Fertilization	Additional fertilization recommended for best results
SKU	HGC715167

Why Choose Formula 707

Formula 707 occupies a specific position in the Roots Organics lineup. Where the original Roots Organics formula leans lighter and more porous, 707 was formulated with more moisture-retentive ingredients to match the demands of plants that drink and feed at a faster rate. Here is what makes it a practical choice:

• Ready to use out of the bag. No mixing, no measuring amendments before planting. Fill a container, place transplants, and water in. For growers planting into the bag itself, the process is even simpler — poke drainage holes in the bottom, open the top, and plant directly.
• Coco fiber and compost backbone. The addition of coco fiber alongside compost creates a structure that holds moisture while remaining workable. It breaks down slowly and resists compaction through repeated watering cycles.
• Room for customization. The reduced perlite and pumice content is intentional: it leaves physical and chemical space for growers to add their own amendments, whether that means topdressing with dry fertilizers, adding mycorrhizal inoculants, or blending in additional aeration material for their specific environment.
• Scaled for larger plants. The 30-gallon grow bag format is sized for plants that benefit from an extended root zone. The bag can be used as a standalone container or the mix transferred into fabric pots or raised beds.
• Peat and coco complement each other. Peat moss provides long-term water and nutrient retention; coco fiber adds air pockets and drainage pathways. Together they create a buffer that is more forgiving than either material alone.

Best Uses for Formula 707

Formula 707 suits environments and plant types where consistent moisture is an advantage and where the grower expects to supplement nutrition throughout the grow cycle.

• Heavy-feeding annuals in containers. Plants that move through vegetative and flowering stages quickly, consuming water and nutrients at a high rate, are well-matched to a substrate that holds moisture between watering events without staying waterlogged.
• Direct-bag planting outdoors or in a greenhouse. The 30-gallon grow bag ships as the container. In an outdoor or greenhouse setting, growers can space bags on the ground or on benches, poke drainage holes, and plant without purchasing separate pots. This reduces handling and avoids the transplant step entirely.
• Transplanting into fabric pots or raised beds. The mix can be scooped directly from the bag into Smart Pot 20-gallon fabric containers or a raised bed frame. The blend’s texture and moisture profile work well in breathable fabric walls where some moisture evaporation is expected.
• Growers who amend mid-cycle. Because the base formula does not include a heavy pre-charge of nutrients, growers running their own fertilizer programs have a consistent, neutral-ish baseline to work from. The description specifically notes that additional fertilization may benefit plants, making it a good pairing with a nutrient feeding schedule.
• Indoor cultivation with periodic watering. In climate-controlled indoor rooms where watering frequency is managed manually or via a timer-controlled drip system, the higher water-retention profile of 707 can extend the window between watering events compared to coarser, perlite-heavy mixes.

Formula 707 vs Similar Potting Mixes

When choosing between Roots Organics Formula 707 and comparable ready-to-use potting soils, the main variables are drainage profile, included amendments, and bag format. Here is how 707 compares to a general category of competing products:

Versus perlite-heavy open mixes: Many off-the-shelf potting soils include perlite at 30–40% by volume to maximize drainage and aeration. Those mixes suit plants that prefer dry-down periods between waterings. Formula 707 deliberately reduces perlite and pumice, making it better suited to plants that feed and drink more frequently and where drying out too quickly between waterings is a problem. If your environment runs warm and your containers dry out within 24–36 hours, a lighter mix may be more appropriate. If you water every 2–3 days or are growing in a moderate-humidity indoor environment, 707’s water-holding ratio is an advantage.

Versus peat-only or coco-only substrates: Pure peat or pure coco substrates give the grower complete control but require a full nutrient program from day one. Formula 707 includes compost in the base, which contributes slow-release biological activity and initial buffering capacity. That said, the product description notes that additional fertilization is expected, so this is not a set-and-forget formula — it is a starting point. If you prefer a substrate with a longer pre-charge, look at mixes that include higher volumes of worm castings or kelp meal in the base. If you prefer a neutral substrate and are already running a complete liquid nutrient program, the 707 base is functional but not required — a straight coco or peat-perlite mix may cost less per cubic foot.

For comparison within the Premier Hydro growing media selection, the Premier Pro-Mix HP with Mycorrhizae is a peat-based, high-perlite mix targeting maximum drainage and is commonly chosen for growers running aggressive fertigation schedules. It occupies the opposite end of the drainage spectrum from Formula 707.

Compatibility

Formula 707 is a soil-based potting mix and is intended for use in conventional container growing — not recirculating hydroponic systems (DWC, NFT, ebb-and-flow). It is compatible with:

• Fabric pots: The mix’s texture and particle distribution work well in breathable fabric containers. A Smart Pot fabric container in 3-gallon or larger sizes is a common pairing for seedlings and smaller transplants. The 30-gallon bag format also pairs naturally with larger 20-gallon Smart Pots if you are transferring the mix from the bag.
• Plastic and nursery containers: Standard round or square nursery pots with drainage holes. Any pot with adequate drainage at the base is compatible.
• Raised beds and in-ground use: The mix can supplement or replace native soil in raised-bed frames, though its composted organic content makes it most effective in container environments where the root zone stays contained.
• Liquid nutrient programs: Because additional fertilization is specifically noted as beneficial, Formula 707 is intended to be used alongside a liquid or dry feeding program. It is compatible with organic and synthetic nutrient lines — the compost and coco base does not strongly fix pH in a way that conflicts with either approach, though organic inputs are generally the better match for a compost-containing substrate.
• Automated drip irrigation: The mix accepts drip emitters and hand-watering without requiring special emitter spacing. Its water-holding capacity means that very high-frequency drip schedules (multiple short runs per day) should be monitored to avoid saturation.

Usage Guidelines

Formula 707 is designed to be straightforward to use, but a few practices will help you get the most from the mix.

Direct bag use: The bag itself is a 30-gallon grow bag. To plant directly in the bag, poke several drainage holes across the bottom, then cut or fold back the top to expose the soil surface. Set transplants into the mix at the appropriate depth and water in thoroughly. The bag can sit on the ground, on a tray, or on an elevated bench — just ensure drainage can escape freely from the bottom.

Container filling: If transferring the mix to separate pots, the loose, slightly moist texture of the mix pours and packs easily. Fill containers leaving 1–2 inches of headspace below the rim to allow for watering without overflow. Avoid compacting the mix when filling — fill in layers and tap the pot gently to settle rather than pressing the soil down with force.

Watering cadence: Because Formula 707 holds more water than perlite-heavy mixes, the standard lift-test method applies: lift the container when freshly watered, then water again when it feels noticeably lighter and the top inch of soil is dry to the touch. The exact interval depends on container size, plant size, ambient temperature, and humidity. In warm indoor rooms with larger plants, this will typically be every 2–3 days for a well-rooted container. In cooler or more humid conditions it will stretch longer.

Fertilization: The mix does not include a heavy nutrient charge. Begin a feeding program within the first 1–2 weeks of transplanting, using either a liquid nutrient line or a dry fertilizer worked into the top inch of the substrate. Monitor plant response and adjust feed strength based on leaf color and growth rate. The compost component in the base provides some initial biological activity but should not be relied on as the primary nutrition source for heavy-feeding crops.

Sources & Further Reading