Hoya siariae, native to Luzon Island in the Philippines, is a vining epiphyte with slender, veined leaves. It produces clusters of unique, red cup-shaped flowers.

How to care for your Hoya -

Water: Less is more when it comes to watering; we like to wait until the leaves pucker slightly.

Light: This Hoya grows best in very bright light. Southern exposure is best, but it can adapt to east or west locations in front of a window.

Humidity: They like high humidity and would be perfect for a bathroom or kitchen.

Temperature: Average room temperature is fine.

Other info - 

Toxic to cats & dogs? No

Air purifying? Yes