Hoya bella

Identification

Hoya bella is a small, bushy plant rather than a true climber. William Hooker, who named it in 1848, described it as scarcely climbing, with weak, branching, densely leafy stems, and compared the leaves to a myrtle’s: small, ovate, pointed and fleshy, dark green above and paler below, with a single visible vein ^[1]. Flora of British India gives the leaves as about 1 inch (2.5 cm) long, set almost in two ranks, with hairy stems, leaf stalks and flower stalks ^[2]. RHS describes soft, downy trailing stems ^[5], and NC State gives the plant a length of 1 to 2 feet ^[7].

The flowers are the best field mark. The corolla is pure white and the corona a deep purple, which Hooker likened to “an amethyst set in frosted silver” ^[1]. Flora of British India calls the corona lobes violet and boat-shaped and the corolla hairless inside ^[2]. Modern horticultural descriptions call the center lilac-pink or pinkish-purple ^{[5, 7]}.

The closest relative is Hoya lanceolata, the Himalayan plant with which H. bella is often merged. In Flora of British India, H. lanceolata is nearly hairless, with lanceolate leaves 1–2 inches long, terminal umbels and a corolla finely hairy inside; H. bella is hairy on the stems and stalks, has shorter ovate leaves and a corolla hairless inside ^[2].

Naming and trade labels

This is the plant most often labeled Hoya lanceolata subsp. bella. The two names refer to the same plant, and which one you see depends on the reference.

• Species. William Hooker published Hoya bella in 1848 from plants collected by Thomas Lobb and flowered by the Veitch nursery in Exeter ^[1]. WCVP, in its 2026 data, accepts Hoya bella Hook. as a species and lists Hoya lanceolata subsp. bella and Hoya paxtonii as its synonyms ^[9]. NC State follows this and gives H. lanceolata subsp. bella as a former name ^[7].
• Subspecies. D. H. Kent moved it to Hoya lanceolata as a subspecies in 1981, in the journal Asklepios ^[3]. RHS still files the plant under that name: its H. bella profile marks Hoya bella as a synonym, while the H. lanceolata subsp. bella profile carries the same description with the name status “unresolved” ^{[4, 5]}. The RHS growing guide lists it as H. lanceolata ssp. bella with the Award of Garden Merit ^[6].

For buyers, both labels mean the same plant. A label reading just Hoya lanceolata is different: under WCVP that name belongs to a separate species whose range runs from the western Himalaya to Vietnam ^[9].

Growing it

Care guidance published for this plant comes from RHS and NC State, so the notes here are specific to H. bella (under either name). The two sources agree on bright light without harsh sun, a free-draining mix and good humidity. They differ on watering. RHS says to water freely in the growing season, keep the mix just moist in winter and never let it sit wet ^[5], while NC State advises letting the mix become almost dry between waterings because the leaves hold some water ^[7]. Both approaches avoid a waterlogged pot; see the watering guide.

Temperature guidance also varies. The RHS growing guide gives a minimum night temperature of 16 °C for this plant, higher than the 10 °C it gives for Hoya carnosa ^[6], but the RHS plant profile rates it H1c, a category with a 5–10 °C minimum ^[5]. NC State says it grows best at 75–85 °F (about 24–29 °C) and should be kept out of cold drafts ^[7]. Keeping it warm year-round satisfies all three.

For humidity, RHS says moderate to high and NC State gives 50–60% ^{[5, 7]}; see humidity. The RHS mix is a peat-free, loam-based compost lightened with ground bark, sharp sand and charcoal ^[5]; see substrate. Its compact, trailing habit suits a hanging basket ^[7], or it can be trained around a wire loop ^[6]. NC State lists mealybugs, scale and spider mites as pests, and links overwatering and poor drainage to root rot and yellow leaves ^[7].

Flowering

Each lateral flower stalk is about as long as a leaf and carries 8 to 10 flowers ^[1]; Flora of British India describes the peduncles as very short, with longer pedicels ^[2]. Hooker described the scent as delicious, noted that the plant bloomed freely, and said each flower stayed in good condition for many days; the first cultivated plants flowered in June 1848 ^[1]. RHS lists summer flowering ^[5].

NC State stresses two points for getting repeat bloom: do not move or even turn the pot once buds appear, and do not cut off old flower stalks, because new flowers form on the old spurs ^[7]. NC State also notes that adequate light is needed for flowers to form ^[7]; see hoya not blooming and peduncles.

Notes on sources

The line between H. bella and H. lanceolata is still drawn differently by different authors. WCVP gives the native range of H. bella as Assam and Myanmar only ^[9], yet a 2022 survey of epiphytes in the Darjeeling hills recorded plants it identified as H. bella at 1,120 m, with leaves 1.0–5.5 × 0.5–2.0 cm ^[8]. Those leaves are much longer than the 1-inch leaves in Flora of British India ^[2], so the survey may be using a broader concept of the species. Its measurements are not used in the trait table above.