I have made several pressed flower "paintings," most of which fade over time. If possible, I prefer *not* to add artificial color, such as paint or pastels.

Is there some sort of spray fixative, or even special glass one can use when framing pieces?

I appreciate all suggestions! Thanks.
Sharon

While framing, tuck in a little silica gel where it'll be out of sight. Completely seal the picture so no outside moisture can be absorbed. Take the normal precautions, like keeping it out of direct sunlight and you should have better results.