Time to head south?

The ruby-throated hummingbirds are whizzing around our 3 feeders -- there are at least 4-5; it's hard to tell. It's a reminder that fall is coming, even though there's plenty of warm weather ahead, the days are visibly shortening. A fellow garden blogger in northern B.C. reports a first frost warning (yikes!); another garden blogger friend in England is putting one of his pea patches to bed, and sowing mustards as a cover crop.

And I'm seeing monarchs coming through as they make their way south to Mexico, and their overwintering grounds in Michoacan.