Temperature Tolerances for Hoyas

By threegardeners (threegardeners) on October 13, 2011

With permission from carol (AlohaHoya) I'm recreating here her information regarding temperature tolerances for Hoyas.

Something we will all find quite handy!!

Here is a compiled list of base temperature tolerances of some hoyas. This information is taken from Liddle's Nursery Catalogues of the past few years. It is a list of "base temperature tolerances" and is the lowest recommended tolerance. It should not to be taken as typical growing conditions.

C = Cool. Lowest temp. 50 deg. F.
I = Intermediate Lowest temp 60 deg. F
W = Warm Lowest temp 70deg.F
COOL
IML 6 australis ssp. australis 'Silver Valley' Qld.
IML 256 " " " 'Brookfield'
IML 46 bella
IML 1437 bella, albomarginate form
IML 201 calycina ssp. calycina
IML 51, 158,98,43,44 carnosas
IML 186 compacta 'Krinkle 8'
IML 444 fungii
IML 54 globulosa
IML 154 kerrii
IML 45 lacunosa var. pallidiflora
IML 377 lacunosa var. lacunose
IML 139 linearis
IML 185 longifolia
IML 149 motoskei
IML 50 motoskei
IML 269 obovata
IML 352 pauciflora
IML 148 polyneura
IML 87 pottsii 'sp. Chiang Mai' from Thailand
IML (all pubicalyx)
IML 59 serpens
IML 48 sheperdii
IML 461 HSI 037
IML 90 lanceolata

INTERMEDIATE
IML 1418 aldrichii
IML 24 anulata (as well as IML 84 and IML 1120)
IML 414 archboldiana (as well as IML 541, 560)
IML 217 arnottiana
IML 5 australis ssp. australis (as well as IML 7)
IML 1 australis ssp. tenuipes (as well as 565, 144)
IML 772 benquetensis
IML 224 bhutanica
IML 228 bilobata
IML 775 bordenii
IML 1216 brevialata
IML 724 burtoniae
IML 554 callistophylla
IML 418 camphorifolia
IML 372 caudata (as well as IML 965)
IML 189 cembra
IML 1352 chlorantha
IML 545 chlorantha var. tuituilensis
IML 1101 chuniana
IML 329 cinnamomifolia
IML 734 citrina
IML 716 coriacea
IML 1164 curtisii (as well as IML 1160 H.curtisii from Thailand)
IML 892 davidcummingii
IML 1185 deykei
IML 482 dimorpha
IML 71 diptera (also IML 261, 266)
IML 83 diversifolia
IML 337 dischorensis
IML 1377 dolicosparte
IML 298 eitapensis
IML 415 erythrina (as well as IML 511)
IML 713 erythrostemma (as well as IML 1428)
IML 1007 excavata
IML 391 finlaysonii
IML 118 and 423 flavida
IML 1278 greenii
IML 1116 halophilla IML 832 and 904 heuschkeliana (both the pink and the yellow forms)
IML 107 inconspicua
IML 187 incrassata
IML 1163 incurvula
IML 1054 ischnopus
IML 1580 kanyakumariana
IML 394 kentiana
IML 834 aff. kentiana
IML 92 limoniaca
IML 708 and 930 litoralis
IML 1161 lobbi
IML 987 loherii
IML 15, 16, 17, 220 and 449 macgillivrayi
IML 441, 1043, 1181 macrophylla
IML 152 magnifica
IML 735 meliflua and IML 124 meliflua ssp. Fraterna
IML 465 merrillii
IML 182 and 153 multiflora
IML 198 naumanii
IML 240 nummularoides
IML 234 and 1003 obscura
IML 1316 odettaea
IML 559 pachyclada
IML 421 padangensis
IML 97 parasitica
IML 454 parviflora
IML 391 pentaphlebia
IML 968 picta (syn. Pubera)
IML 161 polystachya
IML 18,20,22,37,39,86,353,489 pottsii
IML 728 purpureo-fusca
IML 78 pusilla
IML 1342 retusa
IML 1395 and 1424 rigida
IML 192 samoensis
IML 518 schneei
IML 1127 subglabra
IML 1177 thomsoni
IML 62 tsangii
IML 146,79,738 verticillata (ridleyi), verticillata (acuta) and verticillata
IML 452 vitellina (syn. Fuscomarginata)
IML 358 vitellinoides (syn. meredithii)
IML 100 sp. Aff. micrantha
IML 380 sp. Aff. chuniana currently in circulation as H. chuniana
IML 831 sp. Philippines - thought to be the same as H. sariae

WARM
All of the Eriostemma section of Hoya
IML 80 anulata (USDA354247 - flowers white with pink corona, leaf edges undulate.
IML 23 australis ssp. oramicola
IML 171 australis ssp. sanae
IML 1012 clemensiorum
IML 382 collina
IML 238 cominsii
IML 168 cumingiana
IML 955 dennisii
IML 1330 densifolia
IML 1155 hypolasia
IML 222 imperialis var. rauschii
IML 88 latifolia
IML 1098 megalaster
IML 768 mindorensis
IML 1575 mitrata
IML 559 pachyclada
IML 1096 and 1083 patella
IML 231 ruscifolia
IML 229 subcalva (BSI 1)
IML 1024 waymaniae

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