Worm cast liquid · Certified organic
WormGro
The original worm cast liquid
From$29.70
Down to $4.78 a litre by the 1000L shuttle
Live biology · Dry product
Australian Native Earthworm Eggs
Seed the workforce, not just the feed
$550.00inc GST
Two selected native species, supplied as eggs pre-mixed in high-fungal castings. Spread 4kg per hectare with the gear you already own, and the population builds for years: drilling channels through clay and sand, eating pathogenic fungi and turning residue into humus.
Pack: 20kg
Coverage
- One 20kg pack covers up to 5 hectares at 4kg per hectare. Larger areas take more packs.
Bulk order or a freight question? Call George on 0427 573 424
- 4kg per hectare
- Spread with a conventional spreader
- Pre-mixed in high-fungal castings
- Selected for Australian clay and sand
- Delivered in 5 to 10 working days
- Prices include GST
- Brewed and dispatched from Gin Gin, Queensland
Why earthworms
The liquid brings the biology. The worms keep it there.
WormGro puts the microbes back. Native earthworms give them a permanent home: burrows for air and water, castings for nutrients, and a workforce that breeds itself.
Two native species, selected for Australian soils
They drill through heavy clay and sandy soils alike, opening channels that let rain in and roots down.
They eat pathogenic fungi and spread the beneficial kind
Every pass through the gut shifts the balance in the soil toward the fungi that feed plants, not the ones that rot them.
They build humus from residue
Mulch, stubble and manure become castings, the richest soil there is. The population grows as long as there is residue to feed it.
At a glance
- Pack
- 20kg
- Price
- $550
- Rate
- 4kg per hectare
- Coverage
- Up to 5 hectares
- Hatching
- Within several months
- Full size
- 6 to 12 months
20kg pack, pre-mixed in high-fungal castings. Price includes GST.
How to spread it
Same spreader, different cargo.
No new gear and no new job. The eggs go out the way your dry fertiliser does, and the timing is the only thing to get right.
Pick the moment
Late in the day or under cloud, ideally with rain or dew on the way. Onto recently seeded, mulched or ploughed-in ground so the hatchlings have cover and food.
Spread at 4kg per hectare
A conventional spreader does the job. Blend the pack with your dry fertiliser if you are going out anyway; the eggs ride along without harm.
Let them work
Hatching within several months, full size at 6 to 12 months, casting piles on the surface at 6 to 9 months. Store unused packs cool and shady for up to 6 to 8 weeks.
The population curve
Put out 4kg. Get a million worms a hectare.
Earthworm numbers roughly double every three to four months in good conditions. This is the projection Kookaburra Worm Farms publishes for a single application at 4kg per hectare.
3 months
4,000
worms per hectare
6 months
16,000
worms per hectare
9 months
32,000
worms per hectare
12 months
64,000
worms per hectare
21 months
1,024,000
worms per hectare
Projection as published by Kookaburra Worm Farms. Bars are illustrative, not to scale.
What the research says
Pasture responds to earthworms like it responds to rain.
The figures Kookaburra Worm Farms cites when growers ask whether earthworms are worth the trouble.
70 to 80%
Initial lift in pasture growth after earthworms were introduced, in New Zealand and Tasmanian research reported by NSW DPI.
25%
The long-term pasture growth advantage in the same research, once populations had settled.
7 million
Worms per hectare that established populations reached in that research.
300 t/ha
Castings a year from 25 worms per shovelful of soil, worth around $30,000 in fertiliser value, as estimated by agronomist Graeme Sait.
Where they belong
Best under pasture, orchards and low-till ground.
Earthworms need their burrows left alone. Where the ground is worked hard every season, the population never gets ahead.
- Grazing pastures and hay paddocks
- Orchards, vineyards and tree crops
- Low-till and no-till cropping
- Paddocks under intensive, repeated tillage
Give the worms a head start
Pair the eggs with a WormGro liquid.
The liquid puts the microbes back so the hatchlings land in living soil. Most growers start both in the same season.
- Choose a size
Biological fertiliser · 10:10:10 NPK
WormGro Plus
Biological 10:10:10 for farms cutting back on synthetics
Choose a sizeFrom$87.00
Down to $6.78 a litre by the 1000L shuttle
Hybrid fertiliser · Minerals plus microbes
WormGro Balance
Full-spectrum hybrid: minerals plus microbes
Choose a sizeFrom$77.00
Down to $6.38 a litre by the 1000L shuttle
Earthworm questions
Hatching, spreading and how fast they build.
Eggs are dormant, so they store and travel well and hatch in the soil they are going to live in once there is food for them: the exudates of living plants or decaying plant matter. Keep the pack in a cool, shady place for up to 6 to 8 weeks and use it within 3 months of arrival.
Eggs hatch within several months of spreading and the worms reach full size at 6 to 12 months. Casting piles on the surface, the sign the population is established and working, typically appear 6 to 9 months after application.
Yes. The eggs come pre-mixed in high-fungal castings and can be blended with dry fertilisers and put out through a conventional spreader. Spread late in the day or on an overcast day, ideally before rain or dew, onto recently seeded, mulched or ploughed-in ground.
The two species were selected for Australian conditions and drill through heavy clay and sandy soils alike. They do best under pastures, orchards and low-till cropping. Intensive tillage keeps destroying their burrows and sets the population back, so it is not the right system for them.
Earthworm populations roughly double every three to four months in good conditions. The projection from a single 4kg per hectare application published by Kookaburra Worm Farms runs from 4,000 worms per hectare at three months to over a million at 21 months.
One 20kg pack covers up to 5 hectares at the 4kg per hectare rate. A kilogram of eggs holds roughly 1,000 eggs. Larger areas simply take more packs; talk to George about staging a bigger program across seasons.
Start the population
Tell us the paddock. We will tell you how many packs.
Hectares, soil type and how the ground is managed. George will size the order, suggest the timing for your district and pair it with a WormGro program if the biology needs a head start.