Weeding... any time you spot one up ! :-)

Not sure about a set schedule on the rest of it or a gardening schedule online. I do have a really good book for all of that.... it's called Month-By-Month Gardening in Minnesota and is put out by the Minnesota State Horticultural Society. The author is Melinda Myers and it is edited by Chuck Levine. It has month by month sections for annuals, Bulbs, Fruits, Herbs and Vegetables, House Plants, Lawns, Perennials and Ornamental Grasses, Roses, Shrubs, Trees, and Vines and Ground covers... .plus a lot of other info. It is a good Minnesota specific guide. I bought mine at a garden center, but I just checked Amazon.com and they have it listed for 12.99 which is a lot less than I paid for mine.

Other then that, I've been gardening all my life (which is a very long time :-) and I just do things when it feels right.

Here is a link that might be useful: Month-By-Month Gardening in Minnesota at Amazon.com

Amer. Hort. Society: Seasonal Gardening Tips
Seasonal Garden Projects & Tasks
University Extension: Seasonal Gardening Tips - a month-by-month gardening calendar