Rich Roots Fertilisers
Mealworm Frass Fertiliser – Plant Feed Sachet Box – 12 x 10g
Mealworm Frass Fertiliser – Plant Feed Sachet Box – 12 x 10g
Couldn't load pickup availability
Coming soon. Our Plant Feed Sachet Box is almost here. Join the waitlist or check back soon for launch updates.
Tear. Sprinkle. Water. Grow.
Our Plant Feed Sachet Box is the easiest way to use Rich Roots mealworm frass fertiliser.
Each box contains 12 pre-measured 10g sachets of 100% natural mealworm frass – the nutrient-rich castings left by mealworms. Just tear open a sachet, sprinkle around your plants, gently mix into the soil, and water in.
No scooping. No guessing. No mess.
Designed like a plant care ritual, each sachet gives your plants a simple natural top-up of nutrients, organic matter, beneficial biology, natural chitin and a lab-tested carbon content of 38.5%.
Best for
- Indoor pot plants
- Herbs and small edible plants
- Balcony gardens and courtyards
- Desk plants and office plants
- Plant parents who want simple plant care
- Plant gifts, hampers and starter gardening kits
- Renters, apartment growers and small space gardeners
- Anyone who wants frass without measuring from a larger pouch
Why choose the sachet box?
The sachet box is our most convenient and giftable format.
Each sachet is pre-measured, tidy and easy to use, making it perfect for beginners, plant lovers, busy households, office plants, or anyone who wants a simple feeding routine without keeping a larger pouch of fertiliser on the shelf.
One sachet is ideal for feeding around 2–3 small pot plants. For a larger indoor plant collection, simply use more sachets as needed.
As a guide, one box can provide:
- Up to 6 months of feeding for 2–3 small pot plants if using one sachet every two weeks
- Around 3 months of feeding for a larger small plant collection if using two sachets every two weeks
Actual use will depend on plant size, number of plants, season and how often you feed.
The plant care ritual
Use it as part of your regular plant care rhythm:
- Tear open one sachet.
- Sprinkle around your plants.
- Mix gently into the topsoil.
- Water in to activate the soil biology.
Simple, clean and easy to remember.
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.
| Parameter | Result |
|---|---|
| Nitrogen | 3.71% |
| Phosphorus | 1.13% |
| Potassium | 1.88% |
| Sulfur | 0.25% |
| Carbon | 38.5% |
| Calcium | 0.19% |
| Magnesium | 0.66% |
| Sodium | 0.02% |
| pH | 6.0 |
| Electrical conductivity | 4.6 dS/m |
| Moisture | 12.2% |
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, tear open one sachet and sprinkle around the base of your plants. Gently mix into the top layer of soil and water in well.
As a simple guide:
- Small pots: half to one sachet across 2–3 small pots
- Medium pots: around one sachet
- Larger pots: one to two sachets
- Herbs and small edible plants: apply lightly 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
- Use more sachets for larger pots or bigger plant collections
- Store unused sachets sealed in the box in a cool, dry place
What is inside?
Each box contains:
12 x 10g sachets of 100% raw mealworm frass.
That is 120g net of natural mealworm frass fertiliser in pre-measured, easy-to-use sachets.
No synthetic fillers. No added chemicals. No unnecessary extras.
Made and packed locally in Queensland, Australia.
Storage
Store sachets sealed in the box in a cool, dry place. Keep away from excess moisture.
Which box bundle should I choose?
Choose 1 box if you want an easy plant care routine or a thoughtful gift for a plant lover.
Choose 2 boxes if you have a larger indoor plant collection, want one to keep and one to gift, or want extra sachets on hand.
Choose 4 boxes if you are buying for multiple plant lovers, hampers, market gifts or small business gifting.
Choose 6 boxes if you want the best value: you get 15% off and it qualifies for free shipping on one-time purchases.
Regular top-ups
Want to keep your plants 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 box or bundle price, and you can pause, skip or cancel any time.
A simple guide:
- Every month: best for larger indoor plant collections or regular gifting
- Every 2 months: best for regular home plant care
- Every 3 months: best for occasional top-ups or smaller plant collections
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.
Share

I loved the sachets of worm meal and the personalised service. The pot plants seem to have improved however if we had better weather I would have seen more improvement.