ChloroFilePlanning tools
Two questions the catalog can answer that a list of varieties cannot. Both run on the same 41 regions, with frost dates and the daylight trigger worked out for each latitude.
Will it finish outdoors?
Pick your region and see which varieties beat the first frost, with the sow and harvest dates and how many days of margin you get. 2460 varieties across 41 regions. An outdoor photoperiod flowers on daylength rather than on your schedule, and this is built around that.
Grow planner
A single grow, week by week: sow date, veg length, flowering, dry and cure, drawn against your frost window. Models a tent or greenhouse, and shows the outdoor date beside it so the two are never confused.
Track one of these
ChloroFile carries this whole reference offline. Pick a variety when you add a plant and it fills in the type, seed type, and flowering window, then logs what actually happened against it.