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Amendments & Supplements

Clean amendments for precision organic home gardening, market gardening, restaurant produce, cut flower growing and medical cannabis. Shop by what the input does; an input can sit in more than one group.

Shop by nutrient: Nitrogen · Phosphorus · Potassium · Calcium and magnesium · Trace elements · Biostimulants · Other

Not sure where to start? Use the Home flower and vege product guide and area calculator, or the Market garden soil planner if you have a soil test.

Superfine AgLime (calcium carbonate) - Seacliff Organics Superfine AgLime (calcium carbonate) - Seacliff Organics
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Superfine AgLime (calcium carbonate)
$8.90
Gypsum (Biogro certified calcium sulphate) - Seacliff Organics Gypsum (Biogro certified calcium sulphate) - Seacliff Organics
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Gypsum
$17.50
Dolomite Lime (calcium/ magnesium) - Seacliff Organics Dolomite Lime (calcium/ magnesium) - Seacliff Organics
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Dolomite Lime (calcium/ magnesium)
$17.00
Crushed Bluff Oyster Shells (calcium carbonate + Chitin) - Seacliff Organics Crushed Bluff Oyster Shells (calcium carbonate + Chitin) - Seacliff Organics
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Crushed Bluff Oyster Shells (calcium carbonate + Chitin)
$20.00
Colloidal Soft Rock Phosphate (ACO Organic calcium phosphate) - Seacliff Organics Colloidal Soft Rock Phosphate (ACO Organic calcium phosphate) - Seacliff Organics
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Colloidal Soft Rock Phosphate (ACO Organic calcium phosphate)
$15.00
Fish Bone Meal (phos/calcium/ nitrogen) - Seacliff Organics Fish Bone Meal (phos/calcium/ nitrogen) - Seacliff Organics
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Fish Bone Meal (phos/calcium/ nitrogen)
$37.50
BioPhos - Seacliff Organics BioPhos - Seacliff Organics
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BioPhos
$24.90
Fish Meal (nitrogen/ phos) (bio gro certified 2020 bioseas) - Seacliff Organics Fish Meal (nitrogen/ phos) (bio gro certified 2020 bioseas) - Seacliff Organics
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Fish Meal (nitrogen/ phos)
$40.00
Mussel Meal (nitrogen+) - Seacliff Organics Mussel Meal (nitrogen+) - Seacliff Organics
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Mussel Meal (nitrogen+)
$15.00
Organic Flaxseed Meal (slow release nitrogen) - Seacliff Organics Organic Flaxseed Meal (slow release nitrogen) - Seacliff Organics
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Organic Flaxseed Meal (slow release nitrogen)
$6.90
Karanja Seed Meal (Ecocert organic)(slow release nitrogen) - Seacliff Organics Karanja Seed Meal (Ecocert organic)(slow release nitrogen) - Seacliff Organics
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Karanja Seed Meal (Ecocert organic)(slow release nitrogen)
$24.90
Neem Seed Meal (Ecocert Organic) - Seacliff Organics Neem Seed Meal (Ecocert Organic) - Seacliff Organics
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Neem Seed Meal (Ecocert Organic)
$10.90
Magnesium Sulphate - Seacliff Organics Magnesium Sulphate - Seacliff Organics
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Magnesium Sulphate
$8.90
Amino Acid Powder (fancy nitrogen) - Seacliff Organics Amino Acid Powder (fancy nitrogen) - Seacliff Organics
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Amino Acid Powder (fancy nitrogen)
$19.90
Potassium Sulphate (Sulphate of Potash Biogro) - Seacliff Organics Potassium Sulphate (Sulphate of Potash Biogro) - Seacliff Organics
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Potassium Sulphate
$17.00
Potassium Silicate - Seacliff Organics Living Soil Amendments New Zealand
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Potassium Silicate
$34.90
K-Humate (Potassium Humate) - Seacliff Organics K-Humate (Potassium Humate) - Seacliff Organics
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K-Humate (Potassium Humate)
$9.90
Alfalfa/Lucerne Meal (nitrogen/ triacontanol) - Seacliff Organics Alfalfa/Lucerne Meal (nitrogen/ triacontanol) - Seacliff Organics
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Alfalfa/Lucerne Meal (nitrogen/ triacontanol)
$14.90
Winstone Gypsum Clay Breaker 25kg - Seacliff Organics
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Winstone Gypsum Clay Breaker 25kg
$34.90
Winstone Gypsum Clay Breaker 8kg - Seacliff Organics
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Winstone Gypsum Clay Breaker 8kg
$19.90
Bioag - TM-7 - Seacliff Organics Bioag - TM-7 - Seacliff Organics
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Bioag - TM-7
$14.90
Micronised Whole Leaf Aloe Powder (Certified Organic) - Seacliff Organics Micronised Whole Leaf Aloe Powder (Certified Organic) - Seacliff Organics
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Micronised Whole Leaf Aloe Powder
$25.00
Ultra Paramagnetic Andesite Rock - Seacliff Organics Ultra Paramagnetic Andesite Rock - Seacliff Organics
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Ultra Paramagnetic Andesite Rock
$87.00
Tri-Kelp Powder (ACC Organic) - Seacliff Organics Tri-Kelp Powder (ACC Organic) - Seacliff Organics
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Tri-Kelp (ACC Organic)
$9.90
Horticultural Coconut Water Powder (organic) - Seacliff Organics Horticultural Coconut Water Powder (organic) - Seacliff Organics
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Horticultural Coconut Water Powder
$12.00
2 Row Malted Barley - Organic Certified - Seacliff Organics 2 Row Malted Barley - Organic Certified - Seacliff Organics
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2 Row Malted Barley
$9.90
Fulvic Acid - Seacliff Organics Living Soil Amendments New Zealand Fulvic Acid - Seacliff Organics Living Soil Amendments New Zealand
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NTS Fulvic Acid
$19.90
Yucca Extract 20% Sarsaponin (Ecocert Organic/ wetting agent/ spreader) - Seacliff Organics Yucca Extract 20% Sarsaponin (Ecocert Organic/ wetting agent/ spreader) - Seacliff Organics
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Yucca Extract 20% Sarsaponin (Ecocert Organic/ wetting agent/ spreader)
$18.00
Acadian Kelp Meal - Seacliff Organics Acadian Kelp Meal - Seacliff Organics
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Acadian Kelp Meal
$22.00
MSR (Micronised Soft Rock Phosphate) - Seacliff Organics MSR (Micronised Soft Rock Phosphate) - Seacliff Organics
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MSR (Micronised Soft Rock Phosphate)
$45.00
Seacliff Organics Balanced Fertiliser V2 Mix - Seacliff Organics Seacliff Organics Balanced Fertiliser V2 Mix - Seacliff Organics
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Seacliff Organics Balanced Fertiliser V2 Mix
$37.50
Seacliff Organics Liquid Fulvic - Seacliff Organics Living Soil Amendments New Zealand Seacliff Organics Liquid Fulvic - Seacliff Organics Living Soil Amendments New Zealand
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Seacliff Organics Liquid Fulvic - 1L
$30.00
Granulated Gypsum - Seacliff Organics Granulated Gypsum - Seacliff Organics
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Granulated Gypsum
$13.00
Quillaja Extract 20% Saponin (Wetting Agent/Spreader) - Seacliff Organics Quillaja Extract 20% Saponin (Wetting Agent/Spreader) - Seacliff Organics
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Quillaja Extract 20% Saponin (Wetting Agent/Spreader)
$12.90
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Seacliff Organics Calcium acetate( WCA)
$30.00
Fermented Alfalfa/Lucerne Meal (nitrogen/ triacontanol) - Seacliff Organics Fermented Alfalfa/Lucerne Meal (nitrogen/ triacontanol) - Seacliff Organics
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Fermented Alfalfa/Lucerne Meal (nitrogen/ triacontanol)
$30.00
Mealworm Frass ( Chitin + )
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Mealworm Frass ( Chitin + )
$12.00
Calboost ( Micronized Calcium Carbonate)
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Calboost ( Micronized Calcium Carbonate)
$11.00
Calsil Boost - Seacliff Organics
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Calsil Boost (wollastonite )
$18.00

How do I know which amendments and supplements my plants need?

We stock a wide range of amendments and supplements to give your plants a chance to thrive. Each product includes detailed information about what to expect, but you can also contact our friendly and experienced team for assistance.

What amendment and supplement quantity options can I purchase?

We understand that some people are small-scale gardeners while others are large-scale gardeners. Depending on the products you wish to purchase, we offer a wide range of volume options, from 500g all the way through to 25kg and beyond.