On a gardening show I was watching,global warming came up.

[Swede]

A woman was buying bedding plants (the show was from Manitoba). The salesman said in the last 10 years he has added plants that would never have survived the relativly short growing season. He started naming plants to her and said "You can thank global warming,I guess." Just one small piece of evidence in the coming crisis.

[MadHound]

1. There was a small thread last week on the national gardening zones

And how they've had to be changed due to global warming.<http://www.democraticunderground.com/discuss/duboard.php?az=show_topic&forum=364&topic_id=1230906>
Here in Mid Mo I've moved from Zone 5 to Zone 6, and from the looks of things most of the country has moved up a zone.

This is going to really start playing havoc with orchards, in that certain trees need certain lengths of cold weather to grow well and fruit properly. Keep this up and we'll start turning into a desert while Canada will become the bread basket:shrug:

[Cleita]

2. I have a book on drought tolerant plantings from ENGLAND!

It turns out the once wet climate of the British isles is warming up and becoming less humid sending the English gardeners to try out the plants we use a lot here in the western united states like salvias that don't require as much moisture.

[Fire Walk With Me]

3. It was mentioned in a photography magazine a few months ago.

Someone had been taking pictures of glaciers and noted a change. More folks are doing the work that needs to be done, at the grass roots level. No pun intended.

[WePurrsevere]

4. As an avid gardener I've noticed a definate difference in what does well

in my gardening zone (now 4 since we moved). I may try a few plants that are only considered hardy up to Zone 5. I'll mulch them in well but I want to see if they'll do well up here especially planted in an area that gets a lot of southern exposure since with every digit lower our choices are decreased as well.

If you're interested in seeing how the hardiness zones have changed at Nat Arbor day's site here you can compare the changes they've had to make in the hardiness zones just from 1990 to 2004. What I would dearly love to see is how they've changed since the mid-1900's when they started keeping track.

Someone posted an article on DU a couple of days ago about Sportmen seeing signs of global warming as well. I think anyone who observes nature at all for a few years can see that there have been changes.