Caudata, like phuwuaensis (formerly sp. Phu Wua), flagellata, khaosoidaoensis, and family, prefers high humidity, and does best grown semi-hydro. I only water when the reservoir is completely empty.

The leaves should be stiff, and they feel kind of cardboard-like. New leaves, until mature, will be thin and shinier.

The plants can be slow to grow, and quite slow to root.

The one plant that almost didn't survive my AHHoya order was flagellata yellow. This was from one of my October orders. I took cuttings, and they JUST started rooting:

Bottom heat is a MUST for rooting, if conditions are cold/cool.

As far as growing, here are some pics of how I grow mine:

Here is a pic of a cutting I took of caudata gold to sell over the summer:

The crusty stuff on the "pot" is from a fertilizer flush/ProTeKt (which can leave a crusty residue when it dries on non-organic surfaces), and is of no consequence.

New growth beginning (around a month after taking the cutting):

Rooted phuwuanensis cuttings (for inventory, cuttings made early December):

Nice, new growth forming on the cuttings:

Healthy, stiff, leaves:

Mother phuwuanensis plant (no clue why the peduncle is pointed up like that, lol!):

New growth on mother plant:

I don't fill the pots completely with media, as it allows some ambient humidity to surround the "crown" of the plant. I find this expedites new growth, at least for me.

Very interesting. Thanks aurorawa. I had mine in a humidity dome on a heat mat and it rotted the roots. I also didn't realize the thin woody stem had snapped off so the top 3 leaves were only getting humidity, so those are dehydrated and look like soaked cardboard that had dried stiffer and a little wrinkled looking.

I guess I will try them semi hydro in grow stones as now I have 2 stems to root. Thanks aurorawa. I've never grown semi hydro before. First time for everything:-)

Regarding the growstones:

I sort through mine to find pieces that are roughly equal in size. For rooting, I use smaller pieces, as they hold the stem in place better, until roots can anchor the cutting in place. I also use a few larger chunks at the bottom, in the reservoir, to help keep water distribution in balance.

All great advice, thanks aurorawa.