Hoya sp. 'Padang Sidempuan' is a rare species named after the area it was discovered, Padang Sidempuan, a region in North Sumatra, Indonesia. 

Rarely available in the UK!

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