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I'm listing all my Hoyas into three categories depending on how well they are doing in my conditions. I would think these conditions would be indicative of most centrally heated homes located in the Northeastern U.S. with the exception that I might keep it a little cooler, because of the cost of fuel oil. These observations might be able to help those wondering what Hoyas will do well for me with winter conditions in the house similar to mine. The temperatures range from a low of 58 degrees at night to a high of about 67 degrees on a sunny day. Relative Humidity ranges from 30% to 44% depending on how cold it is outside. Most of my Hoyas are getting enough light either from windows or under high quality artificial light. I am going to have to assume that I am watering and fertilizing properly for my conditions.
Catagory 1 - Hoyas are thriving, putting on a fair amount of new growth, good color, and may even in rare cases be developing peduncles in the winter.
H. cumingiana
H. fusca
H. hellwigiana IML 1101
H. DS-70
H. cv. Iris Marie
H. carnosa
H. kanyakumeriana
H. sp. Kunming Kina
H. lobbi IML 1161
H. multiflora
H. macgillivrai
H. magnifica IML 0152
H. memoria IML 0107
H. merilli
H. motoskei IML 0149
H. polystachya IML 1043
H. pubicalyx and its hybrids
H. pururea fusca
H. reticulata IML 1101
H. revoluta IML 1455
H. serpens
H. sp. Hatson pean IML 1438
H. vanuatuensis
H. australis ssp. Tenuipes IML 0001
H. coriacea
Catagory 2 - Hoyas are holding their own, maintaining good color and form, just not really growing noticeably.
H. aff. Anulata IML 1120
H. aff. Finlaysonii
H. archboldiana
H. brevialata
H. callistophylla
H. cembra
H. blashernaezil IML 1631
H. kenejiana
H. kentiana
H. lacunosa
H. retusa
H. leytensis IML 1287
H. pauciflora IML 0352
H. pottsii
H. tjadasmalanguensis
H. samoensis
H. obovata
H. loherii IML 0987
H. nummularioides
H. compacta
Catagory 3 - Hoyas I'm not having much luck with, yellowing leaves, dropping leaves, just don't appear to be happy or not like me for one reason or another.
H. polyneura
H. australis ssp. Australis
H. citrina
H. erythrostemma
H. heuschkeliana Pink and Yellow version
H. bella
H. obscura
A couple of other observations H. citrina was doing well until just this week when all the new growth just died almost over night. This could be a case of over watering. I no longer have H. bella - I threw it out after years of struggle. H. lacunosa almost made the bottom list, but because it comes back so strong in the summer - I gifted it into category two. Remember that these are my experiences, and because of variables such as available light, watering and fertilizing practices may not be yours.
Doug
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