Indoor checklist
Lights and space
Hang lamps, set containers or the hydro unit, and confirm the canopy area is ready before any plant arrives
Air and CO2
Install circulation fans and either ventilation or enrichment so the lit period has a steady carbon dioxide supply
Climate
Use sensors and automatic cooling or filtered outdoor air so temperature and humidity stay in range without constant babysitting
Meters
Keep a pH kit plus EC, ppm, or TDS so the nutrient mix can be checked from day one
Optional tools
A surface thermometer and a light meter help you catch heat and intensity problems early
Greenhouse checklist
Cooling
Vents, misters, swamp coolers, or similar gear should work, preferably on a thermostat
Supplemental light
A 1000w lamp covers about 30 to 100 sq ft; a 600w lamp covers about 30 to 65 sq ft in low-light months
Night break
Short bursts of light during long nights keep plants from flowering too early
Blackout option
Curtains let you force flower out of season and plan more than one harvest
Medium
Mix soil beds or fill hydro units so they are plant-ready, not still being assembled
Outdoor checklist
Ground
Finish holes, beds, or raised rows before seed or clone day
Water
In dry summers, source irrigation first. Plants cannot wait for a hose that is not there
Force frames
If you plan an early finish, install blackout frames before the plants need them
Dark period
Flowering starts from night length, not from a calendar date you pick later
Order of work
Environment first, then life. Do not germinate into an unfinished space
Why this order matters
Early stress: Seedlings and fresh clones have little reserve. A hot, dry, or dark first week costs more than a delayed start.
Nutrient path: You cannot correct a missing pH or EC meter after the first wilt.
Photoperiod: Indoor timers and greenhouse night-break lamps must work before short days arrive.
Transplant later: Starting late in a finished room beats starting early in a half-built one.