Hoya rotundiflora (Square Leaf Hoya) - full pots

Hoya rotundiflora Rodda & Simonsson is an accepted species from Myanmar, known in horticulture as Square Leaf Hoya. Its foliage consists of thick, oblong-pandurate leaves with slightly twisted margins, giving them an almost rectangular outline. The shoots are pendent to weakly climbing. The white flowers, with a cream to pale yellow corona, are grouped in convex umbels and have a subtle sweet fragrance. It is cultivated mainly for the contrast between its geometric foliage and rounded flowers.

Foliage and growth. The leaves are opposite, thick, and leathery, approximately 3–5 cm long, with a dark green upper surface and a lighter green lower surface bordered in a darker shade. The midrib is prominent, while the secondary veins branch off at a wide angle, accentuating the geometric pattern. The plant can grow as a pendent specimen or weakly attach itself to a support.

Flowers and fragrance. The inflorescences may contain up to approximately 20 flowers. The white corolla has recurved lobes, while the corona is matte white to pale yellow. The flowers have a faint sweet fragrance and may last approximately one week in cultivation. The species name refers to the rounded appearance of the flowers, not the shape of the leaves.

Hoya rotundiflora was initially also marketed under the name Hoya lyi, but the original publication shows that they are distinct, although related, species.

Flowering depends on the plant’s maturity and growing conditions.

Substrate: use an airy, well-draining mix suitable for epiphytic species. We recommend the professional substrate for Hoya and Anthurium - SG Mix.

For complete recommendations on light, watering, substrate, fertilization, propagation, and flowering, read the complete Hoya care guide.