I grow my Hoya 'Krimson Queen' usually outdoors, but in part shade during the warmer months, since it will not handle our arid weather and harsh direct sun here. Have learned now it loved the little water spike I gave it during that period too.
It can handle our mild winter, but I know it gets tougher if we experience occasional 20F range at times in January. So this time it is being overwintered indoors, but I have positioned it by our west facing window upstairs. I just give it occasional watering as needed, since temps are much cooler now and light levels are shorter, intensity is weaker.
I also took a cutting from that mother plant and been just growing it indoors by our northwest facing sliding door area..and so far it is doing well too. Initially the cutting's leaves were just facing down and I was not sure if it will actually grow..but it managed to produce new leaves facing right side up..so all is well. I am using a container with a wick for this one so there is a small water reservoir below that helps in its moisture needs.
I do not have a greenhouse and this particular Hoya goes well with my other succulents here. Just have to remember to adjust watering as seasons change and make sure media is always well draining.
The mother plant during warmer weather outdoors:
Some krimson variegations on some leaves
The mother plant is now overwintered indoors:
Distance from west facing window
The cutting growing indoors year round now:
Photo below taken today ,09Dec2022
This is the distance of that plant pole from the sliding door..so it suits very well my other low light plants like Phal orchids, Sansevieria and other Hoyas.
Our growing areas are different..my area is so dry..only towards late fall to winter will we have rain but it is a dicey tandem once temperature goes colder than 50F outdoors.
The mother plant will be returned to its old shady location outdoors once Spring temps overnight is at least 50F and higher, so it can acclimate gradually before our super dry summer ensues.