Down to Earth Bio-Fish – 5 lb

Down to Earth™ Bio-Fish 7-7-2 is a dry, nutrient-rich organic fertilizer blended from marine-based ingredients including fish bone meal, fish meal, feather meal, sulfate of potash, alfalfa meal, humates, and kelp meal. With a balanced 7-7-2 N-P-K analysis, this 5 lb box is formulated for heavy feeders like corn, cole crops, and tomatoes, supplying steady nitrogen and phosphorus to promote vigorous growth, beautiful blooms, and plentiful fruit throughout the outdoor growing season.

Down to Earth Bio-Fish Specifications

The specifications below are drawn from the Down to Earth Fertilizer brand product page for Bio-Fish 7-7-2 (downtoearthfertilizer.com) and the canonical supplier record for the 5 lb box format.

Specification	Value
Product name	Down to Earth Bio-Fish 7-7-2
Brand	Down to Earth Organic Fertilizer (Eugene, Oregon)
Product type	Dry organic fertilizer / blended marine-based amendment
N-P-K analysis	7-7-2 (7% nitrogen, 7% phosphate, 2% potash)
Package size	5 lb box
Shipping weight	6.0 lb (canonical attribute weight_lb 6.001)
Form	Dry granular blend
Primary ingredients	Fish Bone Meal, Fish Meal, Feather Meal, Sulfate of Potash, Alfalfa Meal, Humates, Kelp Meal
Best suited for	Heavy feeders — corn, cole crops (broccoli, cabbage, kale, brussels sprouts), tomatoes
Application setting	Outdoor gardens, raised beds, in-ground plots, container plantings
Application timing	Throughout the growing season — transplant, side-dress, top-dress
Mode of action	Slow-release; soil microbes break down marine proteins into plant-available nitrogen and phosphorus over weeks
Format suitable for	Soil incorporation, top-dressing, transplant amendment, compost tea brewing

Why Choose Down to Earth Bio-Fish

The points below are grounded in the canonical product description (description_text) and the Down to Earth Fertilizer brand product page for Bio-Fish 7-7-2.

• Balanced 7-7-2 N-P-K profile from marine and animal proteins. Bio-Fish supplies 7% nitrogen and 7% phosphate from a blend of fish bone meal, fish meal, and feather meal, alongside 2% potash from sulfate of potash. The equal N-P numbers make it well suited to crops that need strong vegetative growth and reproductive support at the same time, such as tomatoes and squash. The marine-protein nitrogen sources release gradually as soil microbes mineralize the proteins, providing steady feeding rather than a single quick flush.
• Formulated specifically for heavy feeders. The product description explicitly identifies corn, cole crops, and tomatoes as ideal candidates for Bio-Fish. These crops draw down soil nitrogen and phosphorus rapidly during their peak growth windows, and the dense marine-protein content of Bio-Fish replenishes those nutrients without resorting to synthetic salts. Outdoor vegetable gardeners running annual rotations of brassicas, sweet corn, and tomatoes have a single amendment that fits all three.
• Seven complementary ingredients in one blend. Beyond the headline N-P-K, Bio-Fish includes humates and kelp meal, which contribute trace minerals, plant growth regulators, and soil-conditioning organic matter. Sulfate of potash supplies sulfur in addition to potassium. Alfalfa meal contributes additional nitrogen plus triacontanol, a naturally occurring growth stimulant present in alfalfa tissue. The combined ingredient list means a single application addresses macronutrients, micronutrients, and soil biology together.
• Dry, shelf-stable, and easy to apply. Unlike liquid fish emulsions, Bio-Fish is a dry granular blend that stores well in its sealed box and applies cleanly without measuring liquid concentrates. Gardeners can broadcast, side-dress, or top-dress without the odor and mess associated with bottled fish hydrolysates. The 5 lb box is sized for home gardens and small market plots, covering a meaningful amount of bed space per box.
• Backed by Down to Earth’s Eugene, Oregon organic fertilizer line. Down to Earth has built its catalog around single-ingredient and blended organic amendments aimed at home gardeners, market growers, and certified organic operations. Bio-Fish sits within that broader product family alongside other Down to Earth blends and meals, giving growers a consistent source for organic inputs across an entire feeding program.

Best Uses for Down to Earth Bio-Fish

The use cases below reflect the crop guidance in the canonical description (corn, cole crops, tomatoes) and the typical application contexts for a 7-7-2 dry organic fertilizer in outdoor and container settings.

• Tomato and pepper beds. Mix Bio-Fish into the planting hole at transplant to set up nitrogen and phosphorus reserves for root establishment and early fruit set. Side-dress again at first flower and again at fruit set on indeterminate tomatoes. The 7-7-2 ratio supports both the leafy frame and the heavy fruit load these crops carry through summer.
• Sweet corn and grain corn. Corn is named in the product description as an ideal candidate. Incorporate Bio-Fish into the row before planting and side-dress when stalks reach knee-high. The slow-release nitrogen feeds corn through the rapid vegetative phase without leaching as quickly as soluble salt-based fertilizers, which is particularly relevant for sandy or well-drained soils.
• Cole crops — broccoli, cabbage, kale, brussels sprouts, cauliflower. Brassicas are heavy nitrogen feeders, and Bio-Fish is named in the product description as a fit for this family. Work it into the bed at transplant and again as plants form heads or fill out their frames. Cole crops grown for fall harvest benefit from a top-dress application in mid-season to keep growth pushing through cooler weather.
• Cucurbits and squash. Pumpkins, winter squash, zucchini, melons, and cucumbers all need sustained nutrition through flowering and fruit set. Bio-Fish supplies the nitrogen for leafy expansion plus the phosphorus for blossom and fruit development. Apply at transplant and again at vine run.
• Raised beds and container plantings. The 5 lb box is well-sized for raised-bed gardeners and container growers who want a single dry amendment to incorporate at planting. For containers, mix into the upper few inches of media at planting and top-dress lightly mid-season as the original amendment is consumed.
• Cover crop incorporation and bed prep. Bio-Fish can be applied alongside compost and cover crop residue during bed preparation to enrich the soil microbial community with marine protein inputs before the next crop goes in. Pair with a complementary organic dry amendment like Down to Earth Bio-Live or Down to Earth Vegan Mix for additional micronutrient and microbial diversity in the bed.

Down to Earth Bio-Fish vs Other Organic Dry Fertilizers

Bio-Fish sits within Down to Earth’s broader catalog of dry organic fertilizers and is one of several blended amendments aimed at outdoor vegetable gardens. The comparisons below clarify where Bio-Fish fits relative to other blends in the same Down to Earth line.

Down to Earth Bio-Fish 7-7-2 (this product): A marine-and-animal-protein blend built on fish bone meal, fish meal, and feather meal with sulfate of potash, alfalfa meal, humates, and kelp meal added. The 7-7-2 analysis emphasizes nitrogen and phosphorus equally with a smaller potassium contribution. Sold in a 5 lb box for home and small-market scale. Strengths are sustained N and P release for heavy-feeding crops; the marine ingredients also contribute a broad amino acid and trace mineral profile that synthetic fertilizers lack.

Down to Earth Bio-Live (comparator within the same line): Bio-Live is another Down to Earth blended dry organic fertilizer that emphasizes inoculation with beneficial soil microorganisms, including mycorrhizal fungi, alongside organic nutrient sources. Growers choosing between the two typically pick Bio-Fish when they want a higher nitrogen-and-phosphorus N-P-K specifically tuned for heavy feeders, and Bio-Live when they want the microbial inoculation component as part of the amendment. Both can be used in the same garden, applied to different beds or at different timings. See Down to Earth Bio-Live 5 lb for that alternative.

Down to Earth Vegan Mix (comparator within the same line): Vegan Mix is Down to Earth’s plant-only organic dry fertilizer, formulated without any animal-derived inputs. Growers selecting a fully vegan amendment for ethical, certification, or sourcing reasons choose Vegan Mix in place of Bio-Fish. The N-P-K and ingredient profile differs from Bio-Fish; Vegan Mix relies on plant meals such as alfalfa, soybean, and kelp without the fish bone, fish meal, and feather meal components that drive Bio-Fish’s nitrogen and phosphorus content.

Key trade-offs:

• Bio-Fish’s 7-7-2 analysis favors heavy feeders with high N and P needs (corn, brassicas, tomatoes). Lower-N blends are better matched to flowering ornamentals, perennials, or established trees where leafy push is undesirable.
• Bio-Fish is animal- and marine-derived. Growers managing for vegan-certified production should pick a plant-only alternative such as Down to Earth Vegan Mix.
• Bio-Fish is a dry granular fertilizer with no live microbial inoculant. For combined fertility plus microbial inoculation, Bio-Live offers the inoculant component within a single amendment.
• For potassium-specific deficiencies, a single-ingredient potassium amendment such as Down to Earth Langbeinite delivers higher K than Bio-Fish’s 2% potash contribution.

Compatibility & Operating Range

The compatibility information below is grounded in the canonical product description for Bio-Fish 7-7-2 and the general application contexts for a dry organic blended fertilizer.

Growing media compatibility: Bio-Fish is intended primarily for soil-based applications — in-ground garden beds, raised beds, and container mixes with a soil or peat-based base. It can be incorporated into commercial potting mixes at planting. Because Bio-Fish relies on soil microbial activity to mineralize its proteins into plant-available nutrients, it is not designed for use in inert hydroponic substrates such as rockwool or clay pebbles, where there is no resident microbial community to break down the organic inputs.

Crop and use-case compatibility: Bio-Fish is named in the canonical product description as suited to heavy feeders — corn, cole crops, and tomatoes — and the broader outdoor vegetable garden context. It is also compatible with cucurbits, peppers, eggplants, leafy greens, and most annual vegetables. It is less suited to crops that prefer lean soils (Mediterranean herbs, native perennials) or to seedling stages where high nutrient concentrations can burn tender roots; in those cases, reduce the application rate or delay until plants are established.

Nutrient program compatibility: Bio-Fish is a complete blended dry fertilizer rather than a single-ingredient amendment, so it can serve as the primary fertility input for many garden beds. It can also be stacked with other Down to Earth meals and amendments for specific deficiencies: pair with langbeinite for additional potassium, with bone meal for additional phosphorus at flowering, or with kelp meal for additional micronutrients. When stacking, calculate combined N-P-K to avoid over-application of any one nutrient.

pH and soil chemistry impact: Marine-protein organic fertilizers tend to have a mild effect on soil pH and do not cause the rapid swings associated with synthetic ammonium-based fertilizers. The humates in Bio-Fish help buffer soil pH and improve cation exchange capacity over time. For acidic soils, pair Bio-Fish with a separate liming amendment as needed based on soil testing; for alkaline soils, the slow-release organic nitrogen will not exacerbate alkalinity the way some chemical fertilizers can.

Storage and handling: Store the unopened 5 lb box in a cool, dry location away from rodents and pets. Once opened, fold the inner liner closed or transfer remaining product to an airtight container. The marine-based ingredients can have a noticeable odor, particularly when moistened, so store separately from food-storage areas. Keep out of reach of pets, as dogs in particular may be attracted to fish bone meal and fish meal components.

Usage & Application Rate Guidelines

The usage guidance below reflects standard application practice for a 7-7-2 dry organic blended fertilizer with the ingredient profile of Down to Earth Bio-Fish (fish bone meal, fish meal, feather meal, sulfate of potash, alfalfa meal, humates, kelp meal). For garden-specific rates, refer to the application directions printed on the Bio-Fish package and the Down to Earth Fertilizer brand product page.

General application guidance by context:

Use Case	Application Approach
New garden beds	Incorporate into the top 3–6 inches of soil before planting
Established beds	Top-dress around plants and gently work into the soil surface
Transplants	Mix into the planting hole or planting row at transplant
Side-dressing	Apply alongside row crops mid-season and water in
Container plantings	Mix into the upper layer of potting media; top-dress mid-season
Compost tea	Steep in aerated water to brew a fertility tea for foliar or soil drench use

Timing across the season: Bio-Fish is a slow-release organic fertilizer. Apply early in the planting cycle to give soil microbes time to begin mineralization, then follow with side-dress or top-dress applications at key growth stages. For tomatoes and peppers, that typically means transplant, first flower, and first fruit set. For corn, that means before planting, knee-high, and tasseling. For brassicas, that means transplant and again as plants begin heading or filling out.

Coverage from a 5 lb box: Exact coverage depends on the rate printed on the package and the crop being fed, but as a general planning figure, a 5 lb box of a 7-7-2 dry blend covers a meaningful area of vegetable bed for one season. Read the application directions on the box for the rate recommended per square foot, per row foot, or per plant for your specific crop and soil starting condition.

Watering in: After applying Bio-Fish, water the bed or container thoroughly. Moisture activates soil microbial activity, which is the mechanism that breaks the marine-protein inputs down into plant-available nutrients. In dry conditions, plan to water consistently after application to keep mineralization progressing.

How to Apply Bio-Fish in Your Garden

The steps below outline a practical workflow for incorporating Bio-Fish into a vegetable garden from bed prep through mid-season side-dressing. Always follow the specific application rates printed on the Bio-Fish package as the primary guidance for your soil and crop.

1. Inspect the box and confirm condition. When the 5 lb box arrives, check that the outer carton is intact and the inner liner is dry and undamaged. A dry, granular consistency is normal; clumping from prior moisture exposure is not. Reseal the inner liner after each use to protect the remaining product.
2. Prepare the bed. For a new bed, loosen the top 6–12 inches of soil with a fork or broadfork and remove weeds and large stones. For an established bed, lightly cultivate the top 2–3 inches around plants. Remove plant debris that could shelter pests during the application step.
3. Measure the Bio-Fish for your bed area. Use the application rate printed on the Bio-Fish box for your specific crop. A kitchen scale or a labeled measuring cup helps maintain consistent rates from bed to bed. Apply at the lower end of the recommended range on richer soils with high organic matter, and at the higher end on poorer or sandy soils.
4. Broadcast or apply at the planting line. For broadcast application across a bed, spread the measured Bio-Fish evenly over the soil surface by hand or with a small scoop. For row-crop applications, apply along the planting line or into the planting hole. For container plantings, mix the measured dose into the upper few inches of potting media at planting.
5. Incorporate into the soil. Lightly work the Bio-Fish into the top 3–6 inches of soil with a rake, hand cultivator, or hori-hori. The goal is to bring the fertilizer into contact with soil microbes that will mineralize it, while keeping it within the active root zone. Avoid burying it deeper than 6 inches, where it would be out of reach of most vegetable roots.
6. Plant or transplant. Set transplants into beds that have been amended at least a day before planting if possible, or plant immediately after incorporation if time-pressed. Either approach works; pre-application allows the bed to settle and gives microbes a head start on breaking down the amendment.
7. Water in thoroughly. Water the bed deeply after planting to settle the soil around roots and activate microbial mineralization of the marine proteins. Maintain consistent moisture in the weeks following application so the breakdown process proceeds steadily.
8. Side-dress at key growth stages. Mid-season, side-dress around the base of the plants with the recommended rate from the package. Work the Bio-Fish lightly into the soil surface and water in. Time side-dressing to match the crop’s peak nutrient draw: first flower on tomatoes, knee-high stage on corn, head formation on brassicas.
9. Store the remaining product. Reseal the inner liner, close the box, and store in a cool, dry, rodent-proof location away from pet access. Marine-based fertilizers can attract dogs and rodents; a sealed metal container or a closed shed shelf is preferable to an open garage floor. The dry blend keeps well from season to season if stored properly.

Sources & Further Reading