Cold Lake sits in zone 2b. The last frost lands somewhere between May 20 and June 5. Count backward from there and the indoor calendar writes itself.
Pick June 1 as your transplant date. Tomatoes want eight weeks indoors, so seed them the first week of April. Peppers want ten, so late March. Brassicas want five, so the end of April. Cucurbits want three and hate being moved, so mid-May in their final pot.
Starting earlier than that is not ambition, it is a leggy plant in a small pot in a dark month.
Heat gets seed up. Light keeps it short. A heat mat until the first leaves show, then lights 5–8 cm above the canopy for fourteen to sixteen hours a day.
A south window in April in Alberta is roughly a quarter of what a seedling wants. Assume you need a lamp.
Wind does more damage here than cold does. Start with an hour in a sheltered spot, add an hour a day, and skip any day gusting over 40 km/h.
Keep row cover on hand until the middle of June. A late frost after transplant is normal, not bad luck.
While the tomatoes sit under lights, the same shelf will run a radish tray every seven days. That is the whole argument for microgreens in a short-season town.
Pale, stretched, floppy stems are almost always one of three things: too many days in the dark, not enough light after, or a warm room.
A living tray is not a bouquet. It is a plant that is still working. Here is what it needs on a kitchen counter in a Cold Lake winter.
