The shop, explained
Growth Formula
NPK 4-2-6 · 100 ml
Growth Formula is a mineral nutrient for coco coir: NPK 4-2-6, one hundred millilitres, pump bottle. Shake before use. Two pumps per litre. Use with every watering. £7.99 a bottle; two £13.99; three £19.99; then £5 a further bottle. Not packed inside Three by Four or Four by Four.
The bottle
Live on the shop as Growth Formula. Shake before use. Its own Range page — not an add-on SKU inside the kits. The quantity ladder is this page's: £7.99, £13.99, £19.99, then £5 a further bottle. That is not the Seed Pack ladder and not the One by One curve.
Why a mineral feed on coco
Coco coir holds water and air. It does not come loaded like a peat compost. The Coco Soil bag is pre-buffered with calcium and magnesium and charged; Growth Formula is the ongoing mineral feed once the plant is drinking. NPK 4-2-6 is the ratio on this bottle. THH has not published a house trial of this feed against another brand. The claim is the live bottle, the dose, and that it is sold for coco.
How to use
- Shake the bottle.
- Two pumps per litre of water.
- Use with every watering.
Coco wants a regular weak feed more than a rare strong one. Do not invent a third dose on this page.
Questions
Is Growth Formula in the kits?
No. Three by Four and Four by Four do not pack it. It is its own page at £7.99.
How much do I use?
Two pumps per litre, with every watering. Shake first.
What is the NPK?
4-2-6 on the live bottle.