I've linked the Oklahoma Garden Planning Guide for you below.

You will notice it gives a range of dates for planting cool season veggies thar pretty much runs from mid-February to Mid-March. The earliest dates are for far southern Oklahoma and the latest dates are for far northern Oklahoma. Anyone living in between the far south and far north needs to adjust their dates accordingly.

Here in Love County, I plant as close to the earliest date as I can. Since Ada is a little colder than Marietta, you might want to wait a week or so past that earliest date.

Succession planting can be tricky depending on how you do it. Are you wanting to do succession plants of the same thing....like planting new radish seeds every 3 weeks because, after all, how many radishes does one family need at once? Or, do you mean succession planting in the sense that you want to put a different crop in to replace a just harvested one? Let me know and I'll describe succession planting as it relates to your specific plan.

If you want to raise your own transplants inside and then set them out, start the seeds inside 3 to 5 weeks before your anticipated planting date.

Seed potatoes, or pieces of seed potatoes, can go into the ground in mid-February as long as you have well-drained soil that is not excessively wet. If your soil is REAL wet at that point, wait for it to dry out a little bit. Cold, excessively wet soil can rot seed potatoes before they sprout. Asparagus can be planted in a well-prepared bed at any time from late fall to early spring, especially in the southern half of the state. Shallots can go in at the same time as onions.

Please do not hesitate to ask questions. How else will you learn? There's no better place to ask than here on this forum where we all are experienced with Oklahoma's soil and its wild and wacky weather!

Dawn

Here is a link that might be useful: Oklahoma Garden Planning Guide

Dawn, thanks for your reply. When I wrote that I wanted to plant successively, I want to try to live off my small 480 square foot garden all year, going to the store only for milk and meat. I think at that size (40 feet x 12 feet) I'll have to plant bio-intensively. I guess I'd like to try both types of succession planting. Thanks for the link.

The best book I've ever read on succession planting and intercropping is by John Jeavons and is called something like "How To Grow More Vegetables (And Fruits, Nuts, Berries, Grains and Other Crops) Than You Ever Thought Possible On Less Land Than You Can Imagine". I read the older version, but his latest version came out in 2006.

He tells you precisely what to plant, the exact spacing for each crop, how many of each you need for each person, etc.

It's a fascinating book and completely changed the way I garden. It is much more complex than standard square-foot gardening, though.

Dawn

Here is a link that might be useful: John Jeavons book on biointensive gardening