Tropicals & Tender Perennials: Do Hoyas Really Prefer Being Root-Bound?, 1 by revclaus

revclaus wrote:
Allan,

Never trimmed the roots, but it did have a thick stem. I can't recall why I cut that off, but the remnant is still there. It doesn't have many stems now, just put out one new one this week. Might help if I'd top it off with some fresh soil and add a bit of fertilizer. It's a plant that's easy to neglect.

It's hard to get a photo of it. It's been under lights for the last 15 years. But here's a closeup of the middle.