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MEDWYNS FRASS

SKU 0110 Category

‘Mixing Frass into Your Potting Mix Getting a new batch of pots or containers ready for the season? Work our Insect Frass through your soil or soilless mix at 3-5g per litre before you plant. Mix it in well so it’s spread evenly through the medium — this gives young roots steady access to nutrients right from the start.

Top Dressing Through the Growing Season Established plants benefit from a regular top-up. Sprinkle 10g per 15-20L pot around the base, and water well. Repeat every 2-4 weeks through the growing season, adjusting to how your plants are performing.

Feeding Seedlings and Cuttings Young plants need a gentler touch. When potting on seedlings or cuttings — particularly into coco coir — use a lighter rate of 1-2g per litre. This lets them settle into their new home without overloading them, so they can build strength gradually. See our Online shop for further information.

Price –£21.95 PER 1.75KG

Mealworm frass is a natural soil and growing media enhancer, perfect for organic gardening.
Made entirely from filtered mealworm droppings and their naturally shed exoskeletons (rich in chitin), it helps strengthen plants’ natural defenses against pests, disease, and drought.

NPK = 1:2:3

PH =5.4

Analytical composition per Kg/t

  • Available Nitrogen 4.9 – locked into the soil by high organic matter, supporting lush, healthy leaf growth.
  • Phosphate 10.4 – a key plant nutrient, often lacking in outdoor soils, vital for strong roots and shoots.
  • Potassium 17.5  – promotes flowering, fruiting, ripening, and overall plant resilience.
  • Sulphur  1.8 – boosts resistance to pests, diseases, and drought stress.
  • Magnesium 4.3 – essential for chlorophyll formation and activation of enzyme systems.

£21.95

‘Mixing Frass into Your Potting Mix Getting a new batch of pots or containers ready for the season? Work our Insect Frass through your soil or soilless mix at 3-5g per litre before you plant. Mix it in well so it’s spread evenly through the medium — this gives young roots steady access to nutrients right from the start.

Top Dressing Through the Growing Season Established plants benefit from a regular top-up. Sprinkle 10g per 15-20L pot around the base, and water well. Repeat every 2-4 weeks through the growing season, adjusting to how your plants are performing.

Feeding Seedlings and Cuttings Young plants need a gentler touch. When potting on seedlings or cuttings — particularly into coco coir — use a lighter rate of 1-2g per litre. This lets them settle into their new home without overloading them, so they can build strength gradually. See our Online shop for further information.

Price –£21.95 PER 1.75KG

Mealworm frass is a natural soil and growing media enhancer, perfect for organic gardening.
Made entirely from filtered mealworm droppings and their naturally shed exoskeletons (rich in chitin), it helps strengthen plants’ natural defenses against pests, disease, and drought.

NPK = 1:2:3

PH =5.4

Analytical composition per Kg/t

  • Available Nitrogen 4.9 – locked into the soil by high organic matter, supporting lush, healthy leaf growth.
  • Phosphate 10.4 – a key plant nutrient, often lacking in outdoor soils, vital for strong roots and shoots.
  • Potassium 17.5  – promotes flowering, fruiting, ripening, and overall plant resilience.
  • Sulphur  1.8 – boosts resistance to pests, diseases, and drought stress.
  • Magnesium 4.3 – essential for chlorophyll formation and activation of enzyme systems.

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