Already?

So I was looking at articles about yardwork and gardening (not that I have a yard to put a garden in...) and this is what I found.

Basically, it has all sorts of information about what I should do soon - such as planting vegetable garden seeds and all sorts of other very practical things -to prepare for spring and summer.

I wonder if the same applies to the container garden I plan to reincarnate this summer?