Hoya Temperature Tolerance Guide in Celcius

This is based on Vermont Hoya’s temperature guide which is in Fahrenheit,
if you would like to read that, you can find it here.
For New Zealand hoya fans, I have put an asterisk (*) by the hoya on the New Zealand MPI plant biosecurity index list.


What is the MPI Index list? It’s a list of all the plants that are allowed to be imported into the country as we have extremely strict biosecurity. This is because of the unique plant and animal life we have here in New Zealand. Some people may see it as a pain that we don’t have access to the same plants the rest of the world does but to me, it outlines how precious our country is and why we need to protect it. If you grow sick of your indoor plants, please don’t plant them in your garden without doing research first. Many house plants like monstera deliciousa, tradescantia and spider plants have become invasive weeds and threaten our county’s wildlife. Please be responsible with your plants, what you do matters in your community <3
Another note about the MPI Biosecurity list (which btw you can find here). If a plant isn’t on that list it doesn’t necessarily mean that it isn’t in the country or that it isn’t allowed in the country. For example, Monstera Adansonii isn’t on the list but is in the country and is allowed to be sold in the country as Adansonii. I’m also hopeful in the future that MPI will allow more hoya on their list as hoya are not classed as invasive. 

 

If you see any hoya that I’ve missed from putting an asterisk next to, please message me through this website or on Instagram, my handle is @littlelifeplants_nz
One more note, there appear to be gaps and mistakes in this list. hoya acuta isn’t on any list for example. If anyone could clear up these oddities for me please give me a message and I’ll clean it all up.

 

The following list describes the general temperature tolerances that Hoyas will do best in. 
This guide was derived from the information found in the David Liddle Hoya Catalog.
While not to be taken as gospel, it can give some helpful idea of where to start. 
For example, you would not want to take a warm grower like hoya cummingiana and expose it to night-time temps in lower than 2°C.

 

Cool –  Lowest continual temp. 10°C; Highest continual temp. 25°C

Intermediate – Lowest continual temp 15°C; Highest continual temp.  35°C 

Warm – Lowest continual temp 21°C; Plants will happily live at temperatures over 35°C for extended periods of time.

 

Cool Temperature Hoya (10°C – 25°C)

  • H. bella *
  • H.calycina *
  • H. carnosa *
  • H. compacta ‘Krinkle 8’ *
  • H. compacta ‘Indian Rope’ *
  • H. engleriana
  • H.  fungii *
  • H. globulosa *
  • H. cv. Iris Marie
  • H. kerrii *
  • H. lacunosa *
  • H. lanceolata *
  • H. latifolia *
  • H. linearis *
  • H. longifolia *
  • H. motoskei *
  • H. obovata *
  • H. pauciflora *
  • H. polyneura *
  • H. pubicalyx *
  • H. serpens *
  • H. shepherdii *

 

Intermediate Temperature Hoya (15°C – 35°C)

  • H. albiflora *
  • H. aldrichii
  • H. anulata *
  • H. archboldiana *
  • H. arnottiana *
  • H. australis ssp. australis  *
  • H. australis ssp. tenuipes   *
  • H. benquetensis *
  • H. bhutanica *
  • H. bicknellii 
  • H. bilobata *
  • H. blashernaezii
  • H. bordenii  *
  • H. brevialata
  • H. burtoniae *
  • H. cagayenensis 
  • H. callistophylla
  • H. calycina *
  • H. camphorifolia *
  • H. caudata  *
  • H. cembra
  • H. chlorantha
  • H. chuniana
  • H. cinnamomifolia *
  • H. citrina *
  • H. clandestina
  • H. coriacea *
  • H. curtisii
  • H. cystiantha
  • H. davidcummingii
  • H. deykei
  • H. dimorpha *
  • H. diptera   *
  • H. diversifolia *
  • H. dischorensis
  • H. dolicosparte
  • H. eitapensis *
  • H. erythrina *
  • H. erythrostemma  *
  • H. excavata
  • H. finlaysonii *
  • H. fischeriana *
  • H. flavescens *
  • H. flavida *
  • H. graveolens
  • H. greenii
  • H. halophilla
  • H. hellwigiana
  • H. heuschkeliana
  • H. imperialis var rauschii *
  • H. inconspicua *
  • H. incrassata *
  • H. incurvula
  • H. ischnopus *
  • H. juannguoiana
  • H. kanyakumariana
  • H. kentiana
  • H. lamingtoniae
  • H. leucorhoda
  • H. limoniaca *
  • H. litoralis *
  • H. lobbi
  • H. loherii
  • H. macgillivrayi  *
  • H. macrophylla *
  • H. magnifica *
  • H. meliflua   *
  • H. meliflua ssp. fraterna *
  • H. merrillii
  • H. micrantha *
  • H. monetteae
  • H. multiflora *
  • H. nabawanensis
  • H. naumanii *
  • H. nummularoides *
  • H. obscura *
  • H. odettaea
  • H. odorata *
  • H. oreogena
  • H. pachyclada *
  • H. padangensis *
  • H. parasitica
  • H. parviflora *
  • H. paziae
  • H. pentaphlebia *
  • H. picta
  • H. polystachya *
  • H. pottsii *
  • H. purpureo-fusca *
  • H. pusilla
  • H. retusa *
  • H. revoluta
  • H. rigida
  • H. rubida
  • H. samoensis *
  • H. schneei *
  • H. sipitangensis
  • H. subglabra
  • H. thomsoni
  • H. tsangii *
  • H. vitellina   *
  • H. vitellinoides   *
  • H. vitiensis *
  • H. wibergiae
  • H. sp. aff. micrantha
  • H. sp. aff. chuniana currently in circulation as H. chuniana
  • H. sp. Philippines  – thought to be the same as H. siariae

 

Warm Temperature Hoya (21°C – over 35°C)

  • All of the Eriostemmas   (Something called Hoya erythrostemma on the list. Same thing?)
  • H. anulata  *
  • H. australis ssp. oramicola  *
  • H. australis ssp. sanae  *
  • H. clemensiorum
  • H. collina
  • H. cominsii  *
  • H. cummingiana *
  • H. dennisii
  • H. densifolia
  • H. hypolasia
  • H. lambii
  • H. latifolia *
  • H. marginata
  • H. megalaster  *
  • H. mindorensis ssp. superba 
  • H. mitrata
  • H. montana
  • H. pachyclada  *
  • H. patella
  • H. ruscifolia  *
  • H. siariae
  • H. subcalva   *
  • H. walliniana
  • H. waymaniae

 

Phew! we made it to the end! That was quite a list. For a reward, I will now show you some photos of my precious hoya.

From left to right; hoya bella, fishtail or polyneura, anthurium crystallinum and hoya serpens

 

My odd looking hoya kerrii and hoya krimson princess

 

hoya obovata in the centre framed by bella, serpens under the dome and polyneura in the back

 

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