Last but not least, the distance to the subject affects depth of field as well. The closer you get to the flower, the more narrow your depth of field will become. So if you can back up a little, you might get more breathing space to keep everything in focus.

We don't often think about factors like focal length and subject distance affecting depth of field, but when it comes to the really close up compositions of flower photos, every little bit counts.

Likewise, consider your perspective. Here's what I mean: If you photograph a flower so that it has a lot of depth, you'll have trouble keeping all of it in focus. But can you shoot the same subject from another angle, so that it's now perpendicular to the axis of the lens? If the subject is largely flat--more or less the same distance from the lens across the entire frame--then having a lot of depth of field isn't nearly as important.

Now that you know what you need to do to keep it all in focus, we should talk about how to freeze the action. No, the flowers aren't going anywhere--at least, not unless you're planning to photograph --but they are one of the most infuriatingly unstable subjects you will ever try to photograph.