Technically, "Gardening by the Yard" wasn't canceled - it just wasn't renewed which amounts to the same thing in my opinion. Episodes will still air on HGTV, but there won't be any new shows. Paul James has started his own website, makes webisodes on gardening with the same feel as Gardening by the Yard, and has his own blog. And that's great! All of those things are very interesting, but I'm still on the market for a program to fill that void on my DVR since I'm pretty sure A Gardener's Diary is completely gone.
I've been crawling through KLRU and KLRU-Q, Austin's PBS channels, because it seems PBS is the last hope for informative, helpful gardening programs. Some of the ones that I've found inspiring and/or helpful are:
The Perennial Gardener with Karen Strohbeen, but that's about it. As you can see the list is woefully short compared to landscaping/hardscaping/making-a-"room"-outside programs which frankly just piss me off at this point. I like landscaping ideas and gardening vignettes, but I also like hearing about plants, tools, gardening techniques, etc.
There's also The Botany of Desire which is playing locally next week.
"The Martha Stewart Show" occasionally has some gardening segments, and I like the show. However, it's not really a gardening show. It's a lifestyle show. There are gardening segments on several lifestyle shows.
It's not much, but there are a few things left.