Hi all,

I’m a relatively new to hoyas and would like opinions on what is causing my Australis ‘Mrs G’ to lose leaves from the base of the plant. They’re slowly yellowing one at a time and dropping. The plant itself is in a freely draining mix and is watered about once a week or so, in a West facing exposure here in the PNW. The window is a privacy window and so does not allow direct sunlight through. Any thoughts on how to diagnose this would be greatly appreciated!