Guys I found this:

& this which provides more customization:

Now you can have other objects falling besides petals!

Falling petals mini tutorial

Original post @ As the page turns..:

Do you want to add falling petals to your blog like I have on mine?

Here is how:

1. Go to Settings>Blog>Theme:Customize

2. Click on 'Edit HTLM'

(or simply go here)

3. Add the following code above the tag:

Isn't it easy to do?

Let me know if you have problems.