Hoya kerrii, better known as Sweetheart Hoya or Valentine Hoya, is a thick-leaved, succulent-like vine best known for one specific product: a single, perfectly heart-shaped leaf rooted in a tiny pot, sold as a novelty gift around Valentine’s Day. That popularity comes with a catch worth knowing before you buy one, since it shapes what kind of plant you’re actually going to get.

Setting realistic expectations

A single-leaf Hoya kerrii is often sold as a leaf cutting alone, without a node attached — and a node (the small point on a stem where a leaf and growth point both originate) is what’s actually required for a new vine to form. A leaf cutting taken without one can live for years, staying plump and green, without ever producing a new stem or additional leaves. This isn’t a sign you’re doing anything wrong; it’s simply the nature of how the cutting was taken. If you want a plant that will actually vine and grow, look for a cutting or plant that includes a node and a bit of stem alongside the leaf, rather than a leaf on its own.

Light

Give it bright, indirect light, with some gentle direct morning sun tolerated and even beneficial. Like other hoyas, it stores energy in its thick leaves, and enough light is what lets it use that stored energy to support any new growth a rooted cutting is capable of.

Watering

Let the soil dry out significantly between waterings — this plant behaves much more like a succulent than a typical trailing houseplant, and its thick leaves hold a reserve of water that makes it tolerant of infrequent watering. Overwatering, not underwatering, is the way most people run into trouble with this plant. See how to care for succulents for the general watering rhythm this plant follows closely, and how to care for a hoya for the fuller picture on hoya care if you’re growing other varieties too.

Soil and pot

Use a fast-draining mix — a standard potting mix cut with extra perlite, or a succulent/cactus blend, works well. A pot with a drainage hole matters here more than the small size of a typical single-leaf setup might suggest, since there’s very little soil volume to buffer against overwatering in those small pots.

Toxicity

Hoya kerrii is non-toxic to cats and dogs, which is part of what makes it such an easy, low-worry gift plant. See pet-safe houseplants for cats and dogs for other safe options if you’re building out a pet-friendly collection.

Common problems

A shriveled, wrinkled leaf points to underwatering. A thorough soak should plump it back up within a day or two if the roots are still healthy.

A soft, mushy, or blackening leaf, especially at the base is a sign of overwatering and rot — the single biggest risk for this plant given how small its pot and root system usually are. Let the soil dry out fully going forward, and if the rot is limited to the very base, there may not be much to save.

No new growth after months or years is, per the explanation above, very often not a care problem at all — check whether your original cutting included a node. If it was a leaf-only cutting, the leaf can stay healthy and green indefinitely without ever putting out a vine, which is normal for that kind of cutting rather than a sign of neglect. If you do want a vining plant, your best bet is picking up a cutting that includes stem and a node, or a young already-vining plant, and propagating from there — see how to propagate houseplants from cuttings for the general method.