Dry Amendments

Dry Amendments

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Close-up of Optimize Organics Kelp Blend Trio – dry, water-soluble seaweed powder packed with nutrients and plant biostimulants.
500g bag of Optimize Organics Kelp Blend – Laminaria, Sargassum & Ascophyllum for plant vigor, nutrients, and root strength.
Kelp Blend Trio (Soluble Powder)
from $21.00
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Optimize Organics Kelp Meal – organic Ascophyllum nodosum seaweed packed with minerals, auxins, and cytokinins.
1kg Optimize Organics Kelp Meal 1-0-2 – organic seaweed for boosting plant growth, stress resistance, and soil vitality.
Kelp Meal
from $19.00
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Alfalfa Meal by Optimize Organics – organic nitrogen fertilizer with growth hormones and amino acids for soil and plants.
Alfalfa growing in a field – Optimize Organics Alfalfa Meal, used for soil enrichment and protozoa brewing.
Alfalfa Meal 3-0-2
from $13.00
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Close-up of 200X Aloe Vera Powder – Pure Freeze-Dried Extract for Organic Garden and Greenhouse Use
28g Aloe Vera Powder – Organic 200:1 Freeze-Dried Plant Tonic for Rooting, Foliar Spray, and Stress Recovery
Aloe Vera Powder - Organic Freeze Dried 200:1
from $29.00
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Close-up of Optimize Organics Black Soldier Fly Frass – natural insect-based fertilizer with nitrogen, chitin, and beneficial microbes.
7.5kg Black Soldier Fly Frass from Optimize Organics – sustainable fertilizer to improve soil biology, root strength, and resilience.
Black Soldier Fly Frass 3-2-2
from $13.00
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Close-up of Optimize Organics Mineralized Phosphate 0-9-0 – finely ground mineral powder for phosphorus and calcium nutrition.
1kg Mineralized Phosphate 0-9-0 by Optimize Organics – natural powdered phosphorus and calcium for garden use.
Mineralized Phosphate 0-9-0
from $14.00
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Close-Up of Fish Bone Meal – Wild fish-based fertilizer rich in phosphorus and calcium for organic growing
1kg Fish Bone Meal – Organic slow-release fertilizer for flowers, fruits, and root development
Fish Bone Meal 6-16-0
from $13.00
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Fish Bone Granules
Fish Bone Granules
from $13.00
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Close-up of Optimize Organics Oyster Shell Flour – natural calcium amendment for boosting soil health and balancing pH levels.
2kg bag of Oyster Shell Flour by Optimize Organics – slow-release calcium for soil pH balance and strong plant growth.
Oyster Shell Flour 36% Ca
from $14.00
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Close-up of Azomite micronized powder – fine volcanic mineral dust packed with trace elements for soil and plant vitality.
1kg Azomite Micronized – fine mineral powder packed with 70+ trace elements to support soil health and plant nutrition
Azomite - Rock Dust
from $10.00
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Close-Up of Dolomite Lime Granules – Uniform granules made from finely ground limestone for easy soil application
1kg Granulated Dolomite Lime – Raises soil pH and adds calcium and magnesium for garden, lawn, and soil health
Dolomite Lime Granules
from $9.00
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Close-Up of Glacial Rock Dust – Fine, flour-like texture of mineral-rich powder for soil and compost amendment
1kg Glacial Rock Dust – Fine mineral powder to boost soil health, plant nutrition, and microbial activity
Glacial Rock Dust
from $7.00
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Close-Up of Micronized Greensand Powder – Fine glauconite powder packed with potassium, iron, and trace minerals.
1kg Micronized Greensand – Fine mineral powder to improve soil structure and provide slow-release nutrients.
Micronized Greensand
from $15.00
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Close-Up of Gypsum Powder – Fine, highly soluble gypsum powder for fast calcium and sulfur delivery to plants
1kg Gypsum Solution Grade – Water-soluble calcium and sulfur powder to improve soil health and plant nutrition
Gypsum Solution Grade
from $9.00
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Optimize Organics' Gypsum Granules: 22% calcium, 14% sulfur. Enhances soil structure, water retention & nutrient availability for healthier crops.
2KG Bag of Optimize Organics' Gypsum Granules: 22% calcium, 14% sulfur. Enhances soil structure, water retention & nutrient availability for healthier crops.
Gypsum Granules
from $10.00
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Humic Acid Being Mixed – Fine humic acid powder dissolving in water for easy soil and foliar application
Close-Up of Humic Acid Powder – Rich-colored organic humic powder for boosting soil and plant health
Humic Acid Powder - Soluble
from $17.00
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Optimize Organics' Humic Acid Granules: 64% humic, 3% fulvic acid. Enhances nutrient uptake, boosts yields & improves soil structure & water retention.
2KG Bag of Optimize Organics' Humic Acid Granules: 64% humic, 3% fulvic acid. Enhances nutrient uptake, boosts yields & improves soil structure & water retention.
Humic Acid Granules
from $9.00
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Optimize Organics' Limestone Granules: 34% calcium, 88% calcium carbonate. Raises soil pH, boosts nutrient efficiency & improves soil health.
2KG Bag of Optimize Organics' Limestone Granules: 34% calcium, 88% calcium carbonate. Raises soil pH, boosts nutrient efficiency & improves soil health.
Limestone Granules - 34% Ca
from $8.00
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Micronized Soft Rock Phosphate Powder – Fine, water-suspendable Cal-Phos powder for soil and foliar applications
1kg Micronized Soft Rock Phosphate – Fine Cal-Phos powder to support root growth and increase phosphorus availability
Micronized Soft Rock Phosphate (Cal-Phos)
from $21.00
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Optimize Organics' Rock Phosphate Granular 0-7-0: slow-release phosphorus for root growth, flowering & fruiting. Easy application & organic-certified.
2KG Bag of Optimize Organics' Rock Phosphate Granular 0-7-0: slow-release phosphorus for root growth, flowering & fruiting. Easy application & organic-certified.
Rock Phosphate Granular 0-7-0
from $9.00
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Close-Up of Volcanic Basalt Rock Dust – Fine, mineral-rich basalt powder for soil building and healthy plant growth
1kg Volcanic Basalt Rock Dust – Fine rock dust to boost soil health, root growth, and trace mineral availability
Volcanic Rock Dust (Basalt)
from $9.00
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Copper Sulfate 25%
Copper Sulfate 25%
from $19.00
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Optimize Organics' Elemental Boron 20.5%: water-soluble boron to correct deficiencies, boost flower & fruit development, and support plant health.
1KG Bag of Optimize Organics' Elemental Boron 20.5%: water-soluble boron to correct deficiencies, boost flower & fruit development, and support plant health.
Elemental Boron
from $8.00
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Optimize Organics' Ferrous Sulfate: 20% iron, 12% sulfur. Corrects iron chlorosis, boosts chlorophyll & reduces soil alkalinity for gardens & crops.
2KG Bag of Optimize Organics' Ferrous Sulfate: 20% iron, 12% sulfur. Corrects iron chlorosis, boosts chlorophyll & reduces soil alkalinity for gardens & crops.
Iron - Ferrous Sulfate 20%
from $11.00
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Optimize Organics' Magnesium Sulfate: 9.8% magnesium, 13% sulfur. Supports chlorophyll production, nutrient absorption & flower and fruit development.
2KG Bag of Optimize Organics' Magnesium Sulfate: 9.8% magnesium, 13% sulfur. Supports chlorophyll production, nutrient absorption & flower and fruit development.
Magnesium Sulfate (Epsom Salts)
from $9.00
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Optimize Organics' Potassium Sulfate Solution Grade: 52% potash, 18% sulfate. Water-soluble, low-salinity fertilizer for high-potassium crops.
2KG Bag of Optimize Organics' Potassium Sulfate Solution Grade: 52% potash, 18% sulfate. Water-soluble, low-salinity fertilizer for high-potassium crops.
Potassium Sulfate Solution Grade
from $15.00
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Optimize Organics' SUL-PO-MAG Crystals: 22% potassium, 11% magnesium, 22% sulfur. Organic mineral fertilizer for gardens, containers & soil premixing.
2KG Bag of Optimize Organics' SUL-PO-MAG Crystals: 22% potassium, 11% magnesium, 22% sulfur. Organic mineral fertilizer for gardens, containers & soil premixing.
Sul-Po-Mag (Langbeinite) Crystals
from $11.00
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Optimize Organics' Sulfur Granules 90%: elemental sulfur to lower soil pH, correct alkaline soils & support sulfur-oxidizing bacteria. Organic-certified.
2KG Bag of Optimize Organics' Sulfur Granules 90%: elemental sulfur to lower soil pH, correct alkaline soils & support sulfur-oxidizing bacteria. Organic-certified.
Sulfur Granules 90% (S)
from $12.00
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Optimize Organics' Manganese Sulfate 32%: fast-acting micronutrient to correct deficiencies, enhance photosynthesis & improve stress tolerance.
2KG Bag of Optimize Organics' Manganese Sulfate 32%: fast-acting micronutrient to correct deficiencies, enhance photosynthesis & improve stress tolerance.
Manganese Sulfate 32% (Mn)
from $15.00
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Optimize Organics' Citric Acid (Non-GMO): food-grade acidulant for pH adjustment, preservation & cleaning. Organic-certified for multiple applications.
2KG Bag of Optimize Organics' Citric Acid (Non-GMO): food-grade acidulant for pH adjustment, preservation & cleaning. Organic-certified for multiple applications.
Citric Acid (Non-GMO)
from $19.00
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Optimize Organics' Zinc Sulfate 35.5%: fast-acting zinc source to correct deficiencies, boost enzyme activity, improve growth & disease resistance.
2KG Bag of Optimize Organics' Zinc Sulfate 35.5%: fast-acting zinc source to correct deficiencies, boost enzyme activity, improve growth & disease resistance.
Zinc Sulfate 35.5% (Zn)
from $14.00
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Optimize Organics' Potassium Sulfate 0-0-52: 52% potassium, 18% sulfur. Enhances fruit & vegetable growth with low salinity. Organic-certified.
2KG Bag of Optimize Organics' Potassium Sulfate 0-0-52: 52% potassium, 18% sulfur. Enhances fruit & vegetable growth with low salinity. Organic-certified.
Potassium Sulfate 0-0-52
from $14.00
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2KG Bag of Optimize Organics' Potassium Bicarbonate (Food Grade): pH UP solution that regulates soil acidity, boosts nutrient absorption & enhances plant growth.
Potassium Bicarbonate (Food Grade)
from $12.00
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11-0-5 Fermented Plant Extract - Granules (High Nitrogen)
11-0-5 Fermented Plant Extract - Granules (High Nitrogen)
from $15.00
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Black Soldier Fly Frass 3-2-2 (Granules)
from $18.00