I haven't been there myself, but there is also Cullen Gardens just east of Toronto in a city called Whitby. They have a miniature village there too.

It's been a while, but I've been there twice and loved it.

Cootes Paradise is a wildlife sanctuary with nice walking trails. It's a wetlands and very interesting.

I always like the perennial gardens and such, the Laking Gardens is nice.

Check out the website; it provides tons of info and what's in bloom, month by month.

Monica

Here is a link that might be useful: Royal Botanical Gardens, Ontario

I believe the star attraction are their extensive collection of lilacs - largest in north america. you'll be late to see them in bloom. try to reschedule for earlier date