Hoya siamica is a slender vine found in Thailand with long light green leaves. The leaves are on average 1.5–2 cm wide by 4–10 cm long. It has white flowers that come in clusters of 10 to 15. The corolla of the flowers are white and flat; the corona can be a deep purple or a very pale yellow depending on how much light the plant receives. The flowers are approximately 1.5 cm in diameter, fuzzy, have a slight scent, and last about a week when they flower during the summer.
Hoyas should be fertilized monthly; The International Hoya Association suggests feeding them with a fertilizer that includes nitrogen, phosphorus, and potassium.
Hoya Longifolia needs to be planted in loose, quick-draining potting soil. You can make a mixture of potting soil
When your hoya plant finishes blooming, leave the flower stalk, as it may produce new flowers. Removing the stalk forces the plant to produce a new stalk, which delays blooming and wastes the plant’s energy. Hoyas are light feeders, and a monthly drink of compost tea or dilute fish emulsion provides all the nutrition these tropicals need.
Temperature. Hoya Longifolia strives best in 50 to 77 degrees Fahrenheit (10 to 25 degrees Celsius). Moreover, the Hoya Longifolia isot able to survive in freezing temperatures. Therefore transfer your Hoya Longifolia to a warmer place as soon as fall starts to arrive.
Hoya's are not toxic to humans or animals when ingested. The common names for this plant are Wax plant, String Bean Hoya, Shepherd's Hoya, and Porcelain Flower. Hoya Longifolia follows a perennial life cycle.
