Laura,

You may just have a dieing vine - sometimes a vine dies back, which of course means the leaves also die. I would trace the vine out and start cutting it back. A brittle vine is a dead vine, so if it's brittle all the way back to the base, it's just a vine that has died. As you pull off the dead growth, watch for signs of mealy bugs. If you see no signs of mealies, it's probably just natural die-back. It looks pretty darned healthy otherwise.

Denise in Omaha

I think you are right, it got steamed!( or, as Laura states, it might just be a dead vine)

Do look for mealies though... they like to hide where the leaf meets the stem. They look like little cotton balls or a small piece of perilite til you get really close. *ewwww* (Hoyas are prone to getting them)

I just noticed the pot you have this Hoya in... is there drainage? Is it planted in that mottled green pot or is it just a catch pot? If it's a catch pot... does the plant sit in water after you've watered? hummmm.... might be the beginings of root rot if there is no drainage? Hoyas (or most of them) don't like wet feet!

Here's hoping that it's just been a little steamed!
Diane