Plants the grow out of the tank?

there's a bunch of tall plants that can grow submersed or emersed. It's really neat because their leaves are different (different shape, etc.) so they look like two totally different plants.

Anyway, the ones I have that do that are water sprite (Ceratopsis thalictroides and C. siliquosa) and Giant hygro (Hygrophila corymbosa). Both are capable of growing very tall, the hygro especially because it's stems are woody. I believe H. corymbosa is even a "pest" in some parts of the country, so don't plant it outside! All those species I listed are easy to take care of and pretty.

Hornwort (Cabomba) will also do that to some extent, in that when it reaches the surface, it will start to sprout flowers.

I've never actually done what you're describing, where the plants grow up and out and even onto the wall. But it sounds awesome! Post pictures if you get it to work

thats what im trying to do also
i think the plant i ahve is some kind of hygrophila, and the stem looks like a branch than a regular plant stem..

Temple plants, anubias (if you have very high humidity), parrots feather....all grow emergent.

Swords (Echinodorus spp.) will also grow emersed and will also flower.

Get a terrarium for it.

If you have any old fish tanks lying around they make excellent housing for humidity demanding plants.

Yes, I was thinking if you had an enclosed area, with a misting/fogging system, since emerged anubias demand 95%+ humidity.

I have Water Wysteria in my 10 gallon, and when it reached the surface it branched out across the surface and grew much different leaves than are on the part of the stem that is more deeply submerged.