← The greenhouse/Course 4 · For the deep end
Past just alive
Leca, grow lights, and the numbers that make plants thrive
Buying a par meter before you can reliably keep a pothos alive is peak plant-nerd. Don't get ahead of yourself — but if you're past the basics, this is the fun part.
€495 modules · 28 items6 weeks · ~1.5–2.5 h/week
By the end you can run a semi-hydro setup, position a grow light by the numbers (PPFD/DLI, not watts), and build a humid microclimate that doesn't turn into a mould box.
This is for you if
Your plants survive and now you want fenestrated monsteras, a plant cabinet, or a leca conversion. You're comfortable watering, you can read a soil, and you're ready to trade guesswork for a couple of cheap meters.
Skip it if
If you're still learning when to water, this will overwhelm you — start with the six things.
What's inside
5 modules, each ending in field work you actually do. The full lesson list is in the contents panel — jump in anywhere.
Optimise one plant, prove it with numbers
Pick one plant and one goal, then prove — with measurements, not vibes — that you moved the needle. This is the whole course applied to a single subject: baseline numbers, deliberate interventions, and a six-week outcome you can actually show. Honesty is graded too: label which of your interventions rest on solid science and which on community practice.