The Indoor Growing Handbook
A short, practical guide to growing herbs indoors in a European flat. Sold on its own for €20 — and included free with every Gardenia GrowPod, sent as a PDF with your order confirmation.
What is inside
- The one thing that actually decides whether this works
- Why plants do not drown in water
- The two-week rhythm
- Sowing, and the thinning nobody wants to do
- Cutting so the plant comes back
- Reading a plant that is unhappy
- What to grow first, and what to leave alone
- Succession, so you never run out
- Winter, which is the whole point
- A short answer to the question everyone asks
Read the first chapter
Most of what is written about growing herbs indoors was written for people with gardens. This is not that. It assumes a flat, a counter, a light you plug in, and the ambition to cut something green into dinner.
1. The one thing that actually decides whether this works
Light. Not compost, not feeding schedules, not talking to the plant. A leaf builds sugar from light, and below a certain daily total it runs a deficit and starts cannibalising itself — which is exactly what those yellowing lower leaves are.
Human eyes are the problem. They adapt so aggressively that a room reading as bright can be delivering a tiny fraction of outdoor light. This is why the advice to “move it to a brighter windowsill” so often changes nothing: the brighter windowsill may not exist in your building.
Fourteen to sixteen hours a day for leafy herbs, on a timer, with the source close to the canopy. Intensity falls away steeply with distance — a lamp a metre back contributes almost nothing.
The remaining nine chapters cover water culture, the reservoir rhythm, sowing and thinning, harvesting so plants regrow, diagnosing a plant that is struggling, what to grow first, succession planting, and growing through a northern winter.
Get it free with a GrowPod · Buy the handbook on its own — €20