Global Warming Shifts Gardening Schedule
Here in Austin, Redbuds had a fall bloom, which I had never seen. But really, ask the gardeners about global warming. I found an old planting guide for Travis County, rev. 1990. Compare it to our updated guide:
1990 - Feb 15-June 1
2000 - Jan 10-Feb 28
1990 - Feb 15-Mar 15
2000 - Jan 15-Feb 28
1990 - Feb 15-May 15
2000 - Jan 10-Feb 10
1990 - Jan 15-Apr 1
2000 - Jan 1-Apr 1
1990 - Jan 15-Mar 1
2000 - Oct 1-Mar 31
So most of the early spring planting has to be done about two weeks to a month earlier now than it did ten years ago, and you must finish planting about a month earlier, before the heat sets in.
Summer plantings, like okra and sweet potatoes stay about the same.
Then, for the fall plantings, we are starting two weeks to a month LATER, because the summer heat lasts longer.
That is the extension service recommendations, but the gardeners themselves are being much more experimental with earlier planting. I would have to say that we are now Zone 9 where we were Zone 8. I am ordering seeds for plants that are hardy up to Zone 10, because it just might work given the new climate.