If you're the kind of garden blogger who participates in social media sites adding buttons to your blog that helps your friends and fans share your content is a good idea. Not only does it add a bit of interactivity to your blog beyond the comments section, it can expose you to new readers and friends.
Draft.Blogger.com, click on the "Design" link in the dashboard you'll end up in the "Page Elements" section of your blog. In the lower-right corner of the "Blog Posts" gadget there is the "Edit" link. Click on that and in the window that pops up you'll see the option to add a series of social media buttons to the footer of your posts. The social media buttons show up alongside the comments link and labels. For now the available options are to Email a post, blog a post, or to share on Google Buzz, Twitter or Facebook.
BloggerMint that I followed to install the floating social media buttons on my blog. I only had to add two pieces of code to my template to get it to work. You can check it out my garden blog, where it is only visible on post pages and not on the home page. Make sure you download and backup your template in case anything goes wrong. If you don't feel comfortable with editing the HTML of your template try it on a dummy blog first. What I like about this option is that the column moves up and down with the scrolling of the reader's mouse and is very prominent.
Do you use social media to promote your garden blog?