TriSynergi 6-3-3.5 Biological Garden Fertilizer with Mycorrhizae + Beneficial Bacteria (3 lb)

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TriSynergi is a balanced biological garden fertilizer (6-3-3.5) designed to give your garden complete nutrition without a complicated fertilizer schedule.

Instead of relying on N-P-K alone, TriSynergi combines natural whole ingredients, macro and micronutrients, beneficial bacteria, mycorrhizae, humic acid, and biochar to create a complete approach to feeding your garden.

Apply it once before each seasonal planting and let your soil biology get to work.

The TriSynergi Garden Success System

Great fertilizer works even better when you know exactly how to use it. That's why every purchase of TriSynergi includes the TriSynergi Garden Success System—simple tools and guides designed to take the guesswork out of fertilizing your garden.

Quick-Start Guide: Know exactly what to do when your TriSynergi arrives.

Garden Fertilizer Calculator: Calculate exactly how much TriSynergi your garden beds need.

Seasonal Feeding Plan: Know when and how to fertilize each new spring, summer, and fall planting.

Soil-to-Plant Guide: Understand how TriSynergi's whole ingredients and beneficial biology work with your soil to feed your garden throughout the season.

No complicated fertilizer schedule. No guessing how much to use. Just a simple system for giving your garden the nutrition it needs, when it needs it.

Why You'll Love TriSynergi

One application before each seasonal planting: Your garden shouldn't need to be micromanaged every week. Instead of reapplying fertilizer every 1–3 weeks, TriSynergi is designed to be applied before planting your spring, summer, and fall gardens.

Balanced nutrition for the whole garden: TriSynergi provides a 6-3-3.5 N-P-K analysis along with secondary and micronutrients including calcium, magnesium, sulfur, and iron.

Beneficial biology: Multiple species of mycorrhizae form relationships with plant roots that can expand their access to water and nutrients, while beneficial Bacillus strains support nutrient cycling in the soil and root zone.

More than N-P-K: TriSynergi also contains 3% humic acid and 2% wood biochar to complement its biological and nutritional ingredients and support the soil environment where nutrient cycling happens.

Whole-ingredient nutrition: Feather meal, fish meal, alfalfa meal, kelp meal, oyster shell, rock phosphate, fish bone meal, mineral inputs, and more provide diverse sources of nutrition that work with your soil over time.

Guaranteed Analysis

Total Nitrogen (N): 6%
5.96% Water Soluble Nitrogen
0.04% Water Insoluble Nitrogen

Available Phosphate (P₂O₅): 3%

Soluble Potash (K₂O): 3.5%

Calcium: 7.8%
Magnesium: 0.7%
Sulfur: 2.5%
Iron: 0.2%

What It's Made From

Feather meal, bat guano, fish meal, seabird guano, oyster shell, alfalfa meal, volcanic ash, blood meal, crab meal, rock phosphate, fish bone meal, glacial rock dust, sulfate of potash, langbeinite, and kelp meal.

Biological & Soil Inputs

Humic Acid: 3% (derived from Leonardite)

Wood Biochar: 2%

Mycorrhizae: Glomus intraradices, Glomus deserticola, Glomus clarus, and Glomus etunicatum

Beneficial Bacteria: Bacillus subtilis, Bacillus licheniformis, Bacillus amyloliquefaciens, Bacillus megaterium, and Bacillus polymyxa

How to Use TriSynergi

Garden Beds: Before each seasonal planting, evenly apply 4 cups per 25 sq ft of planted garden bed space. Mix into the top layer of soil and water thoroughly, then plant your garden.

Apply before your spring, summer, and fall plantings to replenish your garden before each new round of crops.

Not sure how much planted bed space you have? Use our Garden Fertilizer Calculator to measure multiple garden beds and calculate exactly how much TriSynergi you need.

Pots, Houseplants & Planters: Evenly spread a thin layer of TriSynergi across the surface of the soil, scratch it into the top layer, and water well.

How Much Does One Bag Cover?

One 3 lb bag contains approximately 8 cups of TriSynergi.

At the recommended application rate of 4 cups per 25 sq ft, one bag treats approximately:

50 sq ft of planted garden bed space per seasonal planting.

Size

Net Weight: 3 lb (1.36 kg)

Storage + Safety

Store in a cool, dry place.

Keep out of reach of children. May be harmful if swallowed or inhaled.

Shipping

Ships in 3–5 business days from our small business.