Rain
It's been very rainy here for the last week. We've had showers and thundershowers every afternoon or evening. While this makes landscape photography a challenge (if not an impossibility), it does create some great opportunities for other nature photography.
The flat light is great for close-ups of plants, most of which have rain drops, which always has an interesting visual appeal.
When shooting this close, you're going to have very limited depth of field. I recommend taking many shots of each leaf and flower, and looking over the on the computer to see which ones you like best. I also believe you should crop much of the scene away, leaving the colors, textures, and contrast of the items that drew your attention in the first place.
As always, avoid centering. Try to place the most interesting part of your image off-center.