Mealworm Frass
350g Resealable bag
NZ$15.00
Out of stock
Analysis of our mealworm frass 2026
Verified NPK: 3 - 2 - 2.5
Above worm castings (stronger nutrient density)
More refined than compost
Frass is a dry product with the texture and consistency of sand.
You can safely handle it with your bare hands.
A soil-builder rather than just a fertiliser
Has a slight odour, nothing unpleasant.
Chitin is a natural sugar compound found in insect exoskeletons that helps strengthen plant defences against disease and supports healthy growth when used as a fertiliser.
How to use?
Garden Beds
6–10 tbsp per m². Lightly mix into the soil and water.
Planting Holes
1–2 tbsp blended with backfill soil.
Containers
1 tbsp per litre of potting mix.
Top Dressing
1–2 tbsp around the plant base. Water in.
What is mealworm frass?
Mealworm frass is the excrement or manure produced by mealworms. It has a brown, sandy-like appearance and is often used as a natural fertilizer due to its nutrient content.
Is the mealworm frass you sell processed or treated in any way?
No, the mealworm frass sold is completely natural and unprocessed. It is simply separated from the mealworms and packaged without any chemical additives, heat treatment, or adjustments.
Does mealworm frass have an odor?
Unlike animal manure, mealworm frass does not have a foul smell. It is very benign and typically goes unnoticed, even when used indoors.
What is mealworm frass and how is it produced?
Mealworm frass is the waste produced by mealworms as they eat and grow. Mealworms are raised in trays where they are provided with food. As they consume this food, they produce frass, which consists of their excrement and leftover food particles. Once the mealworms have grown, the frass is separated from them through a sifting process, allowing for the collection of this nutrient-rich byproduct.
