Seacliff Organics 6-6-6 all purpose fertiliser

Seacliff Organics 6-6-6 All Purpose Fertiliser

A general purpose organic fertiliser blend with equal parts nitrogen, phosphorus and potassium, made from four ingredients: fish bone meal, amino acid powder, sulphate of potash and BioAg TM-7. It suits vegetable beds, large feeders such as tomatoes and corn, and container vegetables.

At a glance

• Type: fertiliser blend (dry, general purpose)
• Analysis: NPK = 6.3 - 14.1 - 7.4 (N, P₂O₅, K₂O); elemental 6.3 - 6.2 - 6.1, calculated from the recipe
• Also supplies: about 12% calcium, 2.8% sulphur and 0.2% magnesium, with iron, manganese, zinc, copper, boron, cobalt and molybdenum from TM-7
• Use for: new and established vegetable gardens, large plants, container grown vegetables
• Rate: 0.5 to 1 kg (3 to 6 cups) per 5 square metres before planting, mixed into the top 16 to 20 cm of soil

What it is

A dry blend made by Seacliff Organics in Otago. It contains fish bone meal, amino acid powder, sulphate of potash and BioAg TM-7. The even N, P and K ratio makes it a general purpose feed rather than a crop specific one.

What it does

• Nitrogen for leaf and protein growth, from fish bone meal and amino acids. Amino acids are a fast form; the meal releases as soil life breaks it down.
• Phosphorus and calcium from fish bone meal, for roots, flowering and cell walls.
• Potassium and sulphur from sulphate of potash.
• Iron, manganese, zinc, copper, boron, cobalt and molybdenum, with humic and fulvic acids, from TM-7.

Analysis

Typical analysis, % by weight:

• Nitrogen (N) 6.3%
• Phosphorus 14.1% as P₂O₅ (6.2% elemental P)
• Potassium 7.4% as K₂O (6.1% elemental K)
• Calcium (Ca) 12.1%
• Magnesium (Mg) 0.22%
• Sulphur (S) 2.6%
• Iron (Fe) 0.10%
• Manganese (Mn) 0.10%
• Zinc (Zn) 600 mg/kg
• Copper (Cu) 300 mg/kg
• Boron (B) 300 mg/kg
• Molybdenum (Mo) 100 mg/kg

Calculated from the batch recipe sheet and the ingredient certificates on file (14 October 2026). A laboratory analysis of the finished blend will differ a little from these figures.

How to use

• Incorporate into soil, or top dress through the growing season. Avoid over application.
• New vegetable plantings: before planting seeds or vegetables, use 0.5 to 1 kg (3 to 6 cups) for every 5 square metres of garden. Mix thoroughly into the top 16 to 20 cm of soil.
• Established vegetable gardens: feed every 4 to 6 weeks as needed through the growing season. Use 3 cups for every 5 square metres, or 1 tablespoon per individual plant. Lightly mix into the soil surface and water thoroughly.
• Large plants (tomatoes, corn and similar): feed every 30 days as needed until fruit begins to set. Use 2 to 4 tablespoons per plant depending on size, applied to an area 30 to 40 cm wide around the main stem. Mix lightly with soil and water thoroughly.
• Container grown vegetables: apply 1 tablespoon for every 16 cm of pot diameter every 30 days or as needed. Spread evenly over the soil surface, mix lightly into it, and water.

Learn more in fifteen seconds

• More isn't better
• Nitrogen: what it does
• Phosphorus: what it does

Handling and storage

• Wear a mask to avoid inhaling particles and open in a well ventilated area.
• Wear gloves and eye protection, and wash hands after use.
• Once opened, keep sealed and dry.