Field-tested notes on growing under glass.
Why tomatoes want 60cm of breathing room
Crops · 4 minDeterminate Roma plants top out at 1.2m. Below 45cm spacing, airflow collapses and Botrytis takes hold.
Reading a soil test: CEC, base saturation, OM
Soil · 6 minCation exchange capacity tells you how much fertiliser the soil can hold. Below 10 meq/100g, every irrigation leaches nutrients.
Spotting aphids before the colony forms
Pests · 5 minBy the time leaves curl, you have 10,000 aphids. Computer vision catches the first ten under leaf surfaces.
Picking varieties for a 2°C warmer growing window
Climate · 7 minHeritage varieties bolt earlier than they used to. Heat-tolerant cultivars buy back the lost spring weeks.
CO2 enrichment: when it pays and when it does not
Climate · 5 minPushing CO2 to 900ppm boosts tomato yield 18% only when light and temperature also rise. Otherwise you are venting money.
Density scenarios: comparing yield, revenue, and water at a glance
Tools · 4 minThe crop planner now stacks saved density scenarios into a live chart so you can see when intensifying a bed stops paying back the extra water.
Why the compass and crosshair share the map's camera
Tools · 3 minThe site reticle and 3D compass deform exactly like the underlying tiles because they apply the same perspective, pitch, and bearing transforms.