Almost every imported potting mix on an Indian shelf is built on peat moss. Almost nobody selling it mentions where peat comes from, because the answer is not good.
What peat actually is
Peat is partially decomposed plant matter that accumulates in waterlogged bogs at roughly a millimetre a year. A metre of peat represents about a thousand years. Those bogs are among the densest carbon stores on the planet — peatlands cover about 3% of the world’s land surface and hold roughly twice the carbon of all its forests combined.
Harvesting it means draining the bog and stripping it. The stored carbon oxidises into the atmosphere, and the ecosystem does not come back in any human timeframe. All of this to fill a plant pot for one season.
Coir does the same job
Coconut coir is the fibrous husk left after coconut processing — a waste stream that was, until fairly recently, simply burnt. It holds water like peat, aerates like peat, and is produced in quantity in Kerala and Tamil Nadu.
It has one real advantage over peat too: peat is hydrophobic when it dries out completely, which is why a bone-dry pot of peat-based mix repels water straight off the surface. Coir rewets easily.
How to mix your own, three parts
This is the blend we use, and it suits every plant in the indoor plant range:
- 40% cocopeat — water retention and structure
- 30% vermicompost — nutrition and live soil biology
- 20% garden loam — mineral content and weight
- 10% perlite or coarse sand — drainage, stops compaction
For succulents and jade, invert the ratio: more perlite and sand, half the cocopeat.
Rinse the coir first
Cocopeat is often processed in seawater and carries residual salts that will burn roots. Expand your brick in water, then drain and rinse once before mixing. Buy washed, low-EC grade if you can — it saves the step.
How to expand a cocopeat brick
- Put the 5 kg brick in a bucket or tub — it will expand to roughly 75 litres, which is far more than people expect
- Add 15–18 litres of water and leave it 30 minutes
- Break it up with your hands; it should be damp and crumbly, not soggy
- Drain off excess water before mixing
Is peat-free worse?
No. This was a real debate ten years ago when coir quality was inconsistent, and it is largely settled now. Commercial nurseries across India grow entirely in coir-based media. The only genuine difference is that coir carries almost no nutrients of its own, so it must be blended with compost — which the recipe above does.
If you would rather not mix anything, our ready-made peat-free mix is this exact blend in a bag.
GamlaBazaar is an academic project for MSL885 at DMS IIT Delhi — see the disclaimer.