Toronto is Canadian hardiness zone 7a, not 5b or 6a, and the GTA's frost-free season varies by 47 days end to end. Here is the calendar that follows from those two facts.
Mid-August to mid-September is Ontario's real seeding window. Here are the soil temperatures each species needs, the Pearson climate normals behind the dates, and the four ways a seeding burns your money.
Which GTA nurseries grow their own stock, what their written plant guarantees actually cover, where to find Ontario natives, and how to get a tree for free.
