When should I start to plant my vegetable Garden? I live in Toronto area in Ontario.?

and this is my first attempt at a vegetable garden. Any good advice much appreciated.

When should I start to plant my vegetable Garden? I live in Toronto area in Ontario.?
I live in Sweden Stockholm to be exact it is freezing cold here. We start most everything inside around march then plant when there is no danger of freezing. Somewhere in the middle of April to beginning of May.
Reply:Below is the planting zone for Canada


http://atlas.nrcan.gc.ca/site/english/ma...


I'll give you the link but it looks like


you're in zone 5a


http://nlwis-snite1.agr.gc.ca/plant00/in...


I live in Missouri so I don't think it's time yet. Zone 6


Plant Hardiness Zones


Zone 5a


Provincial Borders


Name Ontario


Cities
Reply:You should contact a retail nursery that sells seeds and plants. Quite a few nurseries guaranty there plants also, so it may be worth your while to buy from someone like that. Some plants can be started far earlier than others. Get the advice from a nursery rather than a home depot or a grocery market.