I am currently preserving plant specimens as a hobby. Currently, I insert the plant specimens into glass jars containing 50% isopropyl alcohol. The plant specimes do get decolourised, but even so, they still look nice. Have a look at the pictures below.
Could anyone tell me if there is a better preserving liquid that I can use? Or, if you too preserve plants, please post your pictures here. I would love to see them.
The long-time standard means of preserving plants is by pressing. If done carefully and artistically, such specimens can be very beautiful. Yesterday I looked at a Delphinium specimen mounted in 1826, and it still maintained much of the flower color.
Thats what I was going to suggest too >pressing< we made catolougs for my college and personal collections of specimens from our arborium. I too, have seen specimens from a long time ago well preserved and still w/color pigments after a long time.