Organic Flaxseed Meal (slow release nitrogen)
Organic Flaxseed Meal (linseed meal) is the pressed cake of New Zealand flax seed, a slow release nitrogen fertiliser with 4.8 to 5.7% nitrogen from its protein. It suits top dressing, bed preparation and potting mixes for medical cannabis and vegetables.
At a glance
- Type: single input amendment (pressed flaxseed cake, linseed meal)
- Supplier certificate on file: AsureQuality certificate, BioGro licence 5494. See the certificate and its dates.
- Analysis: 4.8% nitrogen (4.8 to 5.7% range), 1.8% phosphorus as P2O5 (0.79% elemental P); potassium and sulphur not stated by the supplier
- Use for: slow release nitrogen as a top dress or mixed into beds and media
- Rate: a quarter to half a cup (37 to 75 g) per plant as a top dress, or 500 g per square metre mixed into established beds
- Certification: organic (supplier Bio Oils NZ; certifier not named on the page)
What it is
Flaxseed Meal, also called linseed meal, is what is left after the oil is pressed from flax seed (Linum usitatissimum). It comes from Bio Oils NZ. The meal is 30 to 36% protein, and that protein is where the nitrogen sits.
The figures below are the supplier's typical analysis, not a batch test.
What it does
- Supplies nitrogen slowly as soil microbes break the protein down.
- Brings a little phosphorus, magnesium and calcium with it.
- A protein rich organic matter input that soil bacteria and fungi feed on.
Analysis
NPK = 4.8 - 1.8 - 0 (N, P2O5, K2O); elemental 4.8 - 0.79 - potassium not stated
Supplier typical analysis (Bio Oils NZ), % by weight
- Nitrogen (N): 4.80% (supplier range 4.8 to 5.7%)
- Phosphorus (P2O5): 1.81%
- Phosphorus (P, elemental): 0.79%
- Potassium (K): not stated by the supplier
- Sulphur (S): not stated by the supplier
- Calcium (Ca): 0.30%
- Magnesium (Mg): 0.50%
- Sodium (Na): 0.08%
- Iron (Fe): 87 mg/kg
How to use
- Top dressing: a quarter to half a cup (37 to 75 g) per plant.
- Established gardens: 500 g per square metre (about 3 and a third cups), mixed into the soil.
- Heavy feeder nitrogen target of 150 ppm (about 336 kg of nitrogen per hectare): 660 g (1047 ml) per square metre of bed, 4400 g (6982 ml) per cubic metre of media, or 220 g (350 ml) per 50 litres.
Watch out
- Oil seed meals can go rancid and cake if they get damp. Keep the bag sealed and dry.
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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.
- If ingested, or if the product comes into contact with eyes or causes skin irritation, rinse the area well and call the National Poisons Centre on 0800 POISON (0800 764 766).
Shipping and returns
We ship nationwide across New Zealand. Orders are usually dispatched within 1 to 2 business days and rural delivery can take longer. Unopened products can be returned within 30 days.
