Mealworm Frass Fertiliser – Large Garden Pouch 360g

Feed your soil. Grow stronger roots.

Our 360g Large Garden Pouch is the best-value option for gardeners who want to use Rich Roots mealworm frass fertiliser across more than just a few pot plants.

Made from 100% natural mealworm frass — the nutrient-rich castings left by mealworms — this eco-friendly soil amendment helps feed the living soil around your plants. It contains naturally occurring nutrients, organic matter, beneficial biology, natural chitin and a lab-tested carbon content of 38.5%.

This is the pouch to choose if you have raised beds, veggie patches, larger outdoor pots, fruiting plants, herbs, flowers, or a garden that needs regular feeding.

Best for

• Raised garden beds
• Veggie patches
• Larger pot plants
• Outdoor ornamentals
• Fruiting plants and herbs
• Regular garden feeding
• Anyone using frass across multiple plants

Use it as part of your regular garden rhythm: sprinkle, mix lightly into the soil, water in, and let the soil biology do the work.

Why plants love it

Rich Roots Mealworm Frass Fertiliser helps support:

• Healthy soil biology
• Stronger root zone activity
• Slow, natural nutrient release
• Better soil structure over time
• More active living soil
• Regular plant growth and resilience

Mealworm frass also contains naturally occurring chitin, which may help support plants’ natural defence response as part of a healthy soil ecosystem.

Lab-tested nutrient profile

Our mealworm frass fertiliser has been independently tested for key nutrients and soil-relevant properties.

It also contains naturally occurring trace elements including iron, manganese, zinc, copper, boron, molybdenum, cobalt and silicon.

Note: Because this is a raw natural product, nutrient levels may vary slightly between batches.

How to use

For established plants, sprinkle frass around the base of the plant, gently mix into the top layer of soil, and water in well.

As a simple guide:

• Small pots: 1–2 teaspoons
• Medium pots: around 1 tablespoon
• Larger pots: 1–2 tablespoons
• Garden beds: sprinkle lightly around the root zone and water in
• New planting: mix a small amount through the planting area before watering

Reapply every 2–4 weeks during active growing periods, or as needed based on plant size, season and soil condition.

Application tips

A little goes a long way. For best results:

• Water in after applying
• Avoid direct contact with delicate stems
• Use less around seedlings or sensitive plants
• Start lightly and increase gradually if needed
• Store sealed between uses to keep the product dry and fresh

What is inside?

Just one ingredient:

100% raw mealworm frass.

No synthetic fillers. No added chemicals. No unnecessary extras.

Made & packed locally in Queensland, Australia.

Storage

Store sealed in a cool, dry place. Keep away from excess moisture.

Which bundle should I choose?

Choose 1 pouch if you want to test it across a small garden.

Choose 3 pouches if you have multiple pot plants or one small garden bed.

Choose 6 pouches if you want the best practical bundle: it gives you 10% off and it qualifies for free shipping on one-time purchases.

Choose 12 pouches if you are feeding multiple beds, gifting to other gardeners, or want the best price per gram: you get 15% off and it automatically qualifies for free shipping.

Regular top-ups

Want to keep your garden fed without having to remember to reorder?

Choose Subscribe at checkout for regular top-ups every 1, 2 or 3 months. You can save up to 5% on your selected pouch or bundle price, and you can pause, skip or cancel any time. 

A simple guide:

• Every month: best for active veggie gardens, raised beds and heavy feeders
• Every 2 months: best for regular home garden use
• Every 3 months: best for occasional top-ups or smaller gardens

Subscription discounts are applied at checkout. Free shipping eligibility is calculated based on the final order value after discounts.

Delivery, packaging and returns

For packaging notes and information on delivery, shipping and returns, please visit our Delivery, Shipping & Returns page.

Packaging may vary from photos shown.