Fox Farm Strawberry Fields 1.5 cu ft potting soil is a specialized fruiting and flowering mix containing 35-45% coco fiber and precisely blended mycorrhizae species for optimal drainage and root development. The mix targets contractors managing container gardens and commercial growers who need predictable drainage without sacrificing water retention during Montana’s dry summers.
The formula includes 10 specific mycorrhizae species alongside aged forest products, perlite, earthworm castings, bat guano, oyster shell, and dolomite lime. At 0.50% nitrogen, 0.30% phosphate, 0.30% potash, and 1.00% calcium, it provides a low-fertility base that lets growers control nutrient supplementation. The pH range of 6.3-6.8 handles Montana’s typically alkaline water sources without requiring adjustment.
Technical Composition and Container Performance
This 1.5 cubic foot bag weighs 27.2-34 pounds depending on moisture content and covers approximately 55 liters of container volume. The high coco fiber percentage creates drainage that prevents the waterlogging problems common with heavy peat-based mixes in container settings.
| Specification | Value |
|---|---|
| Coco Fiber Content | 35-45% |
| pH Range | 6.3-6.8 |
| Total Nitrogen | 0.50% |
| Available Phosphate | 0.30% |
| Soluble Potash | 0.30% |
| Calcium | 1.00% |
| Volume | 1.5 cu ft (55 liters) |
| Weight Range | 27.2-34 lbs |
The mycorrhizae blend includes both endo and ecto species: Glomus intradices, G. aggregatum, G. mosseae, G. etunicatum, Laccaria bicolor, L. laccata, Pisolithus tinctorius, Rhizopongon species, Scleroderma cepa & citrinum, and Suillus granulatus. This diversity matters for contractors working with mixed plantings — different species colonize different root types.
Five beneficial bacteria strains (Bacillus amyloliquefaciens, B. licheniformis, B. subtilis, B. pumilus, B. megaterium) break down organic matter and improve nutrient availability. These microbes survive Montana’s temperature swings better than single-strain products.
Fruiting and Flowering Applications
The low initial fertility allows custom nutrient programs without risk of over-fertilization. Growers can begin supplemental feeding one week after planting, matching specific crop requirements. The mix targets strawberries, blueberries, raspberries, melons, tomatoes, peppers, flowering herbs, roses, ornamental flowers, and bulbs.
For commercial container operations, the drainage profile reduces labor. No daily water monitoring during peak summer heat — the coco fiber holds enough moisture for 2-3 day intervals while excess drains freely. Fox Farm designed it to work with their liquid nutrient line including Big Bloom and Tiger Bloom.
Reviews average 4.6-4.9 stars across major retailers, with users specifically praising fruit yields, flower size, and the “loamy” texture with fast drainage. The main complaints involve fungus gnats and surface mold — typical of any organic soil — and the need for early supplemental feeding on heavy feeders.
Professional Considerations
Unlike Ocean Forest’s high initial nutrient load from fish emulsion and crab meal, Strawberry Fields focuses on drainage and microbial activity for the bloom phase. The ready-to-use formula requires no pH adjustment or amendments.
Installation follows standard container procedure: position root mass at proper height, fill space leaving 1 inch from rim, press gently without over-packing, water thoroughly, and allow drainage. The high perlite content means settling happens — have extra mix ready.
Despite organic marketing language, it lacks OMRI certification.
For Montana contractors managing seasonal container displays or greenhouse production, Strawberry Fields solves the drainage-versus-retention balance. The mycorrhizae investment pays off in reduced transplant shock and faster establishment — critical when the growing season runs May through September. At roughly 55 liters per bag, calculate 3-4 bags per cubic yard for volume conversions.
Frequently Asked Questions
Q: What’s the actual drainage difference between Fox Farm Strawberry Fields and their Ocean Forest mix?
Fox Farm Strawberry Fields contains 35-45% coco fiber specifically for high drainage in fruiting and flowering applications, while Ocean Forest is formulated as an all-purpose “powerhouse” mix with higher initial nutrient levels from fish emulsion and crab meal. Strawberry Fields provides a lighter, faster-draining profile designed for the bloom phase, whereas Ocean Forest delivers more upfront nutrition for vegetative growth.
Q: How much supplemental feeding will I need with Strawberry Fields’ low nutrient levels?
Fox Farm Strawberry Fields has intentionally low fertility levels (0.50% nitrogen, 0.30% phosphate, 0.30% potash) to allow growers to customize their feeding programs without over-fertilization. Begin supplemental feeding one week after planting, and the mix is specifically designed to work with Fox Farm’s liquid nutrient line including Big Bloom and Tiger Bloom.
Q: What’s causing the fungus gnats some users report with this soil?
Fungus gnats and surface mold are typical occurrences with any organic potting soil including Fox Farm Strawberry Fields, which contains earthworm castings, bat guano, and aged forest products. The organic matter combined with the soil’s moisture-retention properties from sphagnum peat moss creates conditions where gnats can breed if overwatered.
Q: How many bags do I need for standard container volumes?
Each Fox Farm Strawberry Fields bag contains 1.5 cubic feet (approximately 55 liters) and weighs 27.2-34 pounds depending on moisture content. For volume conversions, calculate 3-4 bags per cubic yard, and when filling containers, leave approximately 1 inch from the top rim for watering.
Q: Is this actually certified organic despite the marketing language?
While marketed with organic language and containing organic ingredients like earthworm castings and bat guano, Fox Farm Strawberry Fields notably lacks OMRI certification. Buyers requiring true organic certification should verify the bag for an OMRI seal.
Q: Why does the pH range of 6.3-6.8 matter for Montana growing conditions?
Fox Farm Strawberry Fields’ pH range of 6.3-6.8 is pre-adjusted to handle Montana’s typically alkaline water sources without requiring additional amendments. The dolomite lime in the mix provides calcium (1.00%) while maintaining this pH buffer, eliminating the need for growers to adjust pH before use.
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