Hoya buotii Kloppenb.
This species is native to the Philippines. It grows as an epiphyte at Mount Banahaw in Quezon province.
Hoya buotii is a climbing plant with twining stems, often woody at the base, and light green leaves with visible, somewhat darker veins and midrib. The leaves are elliptic with margins and the pointed tip curling downwards and attached to the stem by a petiole. They are up to 2.8 inches (7 cm) long and up to 1.6 inches (4 cm) wide. The fragrant flowers are up to 1.2 inches (3 cm) across and appear in dense clusters on short peduncles from spring to summer, lasting 7 to 10 days. Corolla lobes are densely hairy, pale yellow to dull yellow, sometimes with a warm violet tinge. Corona lobes are white to cream-colored and red towards the center.
The specific epithet "buotii (boo-OH-tee-eye)" honors Inocencio Buot Jr, a professor of botany, ecology, and environmental science at the University of the Philippines Los Banos.
How to Grow and Care for Hoya buotii
Light: H. buotii grows well indoors in bright indirect light but will tolerate pretty low light levels, although it becomes weak and leggy, produce fewer leaves, and may not flower without bright light.
Soil: Whatever soil you plant your H. buotii in, it should be well-draining, provide excellent aeration and not hold too much water.
Temperature: As a tropical plant, it thrives in warm, moist, humid climates. Keep it away from drafty windows and doorways during the colder months. H. buotii can withstand temperatures as low as 40 °F (4.4 °C). USDA Plant Hardiness Zones 11a to 11b, 40 to 50 °F (4.4 to 10 °C).
Watering: Water regularly in spring and summer. Soak the soil thoroughly until the water drains out of the drainage holes. Then let the soil dry out between watering. H. buotii is relatively dormant and needs only moderate watering in fall and winter.
Fertilizing: This plant is not a particularly heavy feeder. However, it appreciates some extra micronutrients and macronutrients. Therefore, feed with half-strength high-potassium fertilizer every two weeks or so during the growing season.
Repotting: As an epiphytic plant, H. buotii has quite shallow root systems and does not require a deep container, nor it needs to be repotted frequently. It prefers growing a bit tight in its container. Therefore, repot in spring if it outgrows its container.
Propagation: You can easily get new plants from your existing H. buotii by stem cuttings. Leaf cuttings can be more problematic. The best time to take cuttings is spring or summer when the plant is actively growing. The easiest method of propagation is by layering. Starting this plant from seeds is the simplest but the most time-consuming way of propagation. Sow the seeds in spring or summer in well-draining soil.
Learn more at How to Grow and Care for Hoya.
Toxicity of Hoya buotii
H. buotii is non-toxic to humans and pets.
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