♻️ Organic Fertiliser — Naturally Rotted Cow Manure

In short: At Tammaru Farm, organic fertiliser means naturally rotted cow manure – clean material matured for 3+ years, with no soil, peat, straw or sawdust.

  • Improves soil structure and water retention
  • Releases nutrients slowly and evenly
  • Suits both the garden soil and the compost heap
  • 30 L bags, €5.50–9.00 per bag
  • Tallinn warehouse, Veerme 23 (on the Nõmme border)
  • Minimum 5 bags, or 1 bag together with firewood or briquettes
Grey 30 L plastic bags of rotted cow manure, tied with blue string, stacked at the Tammaru Farm warehouse in Tallinn – organic fertiliser, 20–25 kg per bag

🌱 What is organic fertiliser?

Organic fertiliser is a material of natural origin that feeds both the plant and the soil. Unlike mineral fertilisers, rotted manure releases nutrients slowly and evenly. It also adds organic matter to the soil, which improves soil structure and water retention and activates soil life.

Rotted manure, compost soil or pellets – what is the difference?

Rotted manure

The bag contains only rotted manure, with no fillers. It is a dense material, so you need less of it. It works as a soil improver and a fertiliser at the same time.

Compost soil and potting mix

Depending on the product, these contain soil, peat or other components with added compost or manure. A bigger bag with lighter contents, often meant to be used directly as a growing medium.

Pelleted fertiliser

Dried and pressed manure in a small, concentrated pack. Easy to dose, but it does not add a significant amount of organic matter to the soil.

These three cannot be compared by bag size – what matters is what is actually inside the bag and what you expect from your garden.

Horse manure

Horse manure is often sold after a shorter maturing time. Its fibrous structure and quick heating are useful for making a warm bed in spring. Tammaru Farm sells only rotted cow manure, because it is the simplest choice for the ordinary home gardener – ready to use, with a neutral smell and consistent quality.

🍂 Rotted manure as a compost ingredient

Rotted manure is a nitrogen-rich ingredient that can be added to a compost heap together with garden and kitchen waste.

– Add it in thin layers between kitchen waste and dry garden waste (leaves, twigs)
– Add it in moderation – the right amount depends on what the heap contains and how much dry, carbon-rich material it has
– Avoid thick, dense layers so that air can circulate in the heap
– Keep the compost moist, but not wet
– The compost is working properly when the heap warms up inside and settles evenly

A well-working compost heap should not smell strongly. An unpleasant smell usually means the heap is too wet, short of oxygen or out of balance – adding dry, carbon-rich material and mixing the heap helps.

🇪🇪 Biowaste and composting in Estonia

In Estonia, biowaste must be collected separately from other waste or properly composted where it is produced.

If you compost biowaste at home, you can opt out of separate biowaste collection with the consent of your local government. The exemption is not automatic – it must be applied for, or the composting must be registered in the waste holders’ register. The exact procedure and any savings depend on the local government, so check the conditions of your city district or rural municipality.

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Q&A: Organic fertiliser and composting
What is the difference between rotted manure and compost?
Compost forms when garden and kitchen waste decomposes, and its composition depends on what was put in the heap. Rotted manure is animal manure that has decomposed over a long time, and its composition is more uniform.
How much rotted manure should I add to a compost heap?
There is no fixed amount that suits every heap. Add rotted manure in moderation, in thin layers between dry garden waste – the amount needed depends on how much dry, carbon-rich material the heap contains.
Does home composting exempt me from biowaste collection in Estonia?
Not automatically. The exemption must be applied for from the local government, or the composting must be registered in the waste holders' register. Conditions and possible savings differ between local governments.
Where can I buy rotted cow manure and how much does it cost?
From Tammaru Farm's Tallinn warehouse, Veerme 23 (on the Nõmme border). Warehouse prices range from €9.00 per bag (1–4 bags) to €5.50 per bag (45+ bags). The minimum for a separate order is 5 bags. Delivery in Tallinn and Harju County usually takes 1–3 working days.

➡️ Ordering rotted cow manure, all prices and application rates

Order: +372 52 388 52

Updated: 18 October 2026