Sign in to follow this  
Followers 0

Cold Tolerant Hoyas/Dischidias?

1 post in this topic

Which species of Hoyas and Dischidias have people in Southern California (and similar climates) been growing outdoors year around? I've been interested in epiphytic plants for quite some time now but it wasn't until last year that I really started to branch out into Hoyas and Dischidias.
Here's a partial list of plants that I had outside in Glendale this last winter. One night it got down to at least 32F. All of them are mounted and a few are covered in plastic. I plan on propagating the ones covered in plastic so that I can try divisions under shade cloth.
Dischidia bengalensis - The base of mine rotted but I'm remounting it in my terrarium. A few of my friends are growing it outdoors.
Dischidia cleistantha - Strong summer grower but each winter around half of the new growth dies back. This last winter, because of the frost, the die back seemed especially severe. Here's a picture of one of mine wrapped around my Ficus "bonsai"...
Dischidia formosana - pretty great outdoors
Dischidia hirsuta - covered in plastic
Dischidia ioantha variegata - seems marginal outdoors
Dischidia milnei - slow but no winter dieback
Dischidia nummularia (large leaf type) - covered in plastic. The large leaf type which is probably from Australia seems more tolerant than the small leaf type from Malaysia, Singapore, etc. I also have a variety which is from China.
Dischidia rafflesiana - covered in plastic
Dischidia ruscifolia - covered in plastic and under shade cloth. Seems marginal.
Hoya australis ssp. keysii? - fairly succulent, yellowish and fuzzy. A bit of dieback but should be pretty good grower once better established.
Hoya australis ssp. oramicola - didn't seem too bothered by the frost but it very gradually began to drop its leaves. Now it only has one or two leaves left...not sure if it's going to recover.
Hoya australis ssp. not rupicola - purchased as rupicola but it's not nearly as succulent as the plants I've seen as rupicola. Leaves are fairly dark green and elongated. No problem with the cold.
Hoya bella - covered in plastic but shouldn't have a problem with more exposure.
Hoya cumingiana - covered in plastic but a friend lost his this last winter. He'd had it for several years but recently and accidentally decreased its drainage.
Hoya excavata - killed by the frost
Hoya fungii - has already sent out new growth
Hoya globulosa - just starting to send out new growth
Hoya kerri - no problem with the cold. Several of my friends are also growing it outdoors with no problem. Probably needs quite a bit of summer heat though so might not work for people along the coast.
Hoya khoniana 'Eskimo' - strong summer grower but unfortunately the freeze killed it. I gave some rooted plants to three friends with greenhouses so I should be able to get it back. This time I'll know to bring it indoors if there's a chance of frost.
Hoya lacunosa - mostly fried but I just stuck a few sad pieces in my terrarium.
Hoya litoralis - didn't seem to do that well to begin with...so kinda hard to say. I just have a small piece left covered in plastic.
Hoya loheri - strong summer grower and didn't even seem bothered by the frost
Hoya meliflua - killed by the frost
Hoya nummularioides - had around 5 established cuttings. Lost a couple...doesn't seem like a strong grower.
Hoya polyneura - seems pretty solid
Hoya serpens - no problem with the cold...a bit on the slow side.
Hoya shepherdii? - no problem with the cold
None of my "conclusions" are really definitive. Perhaps I just ended up with an especially tender clone...or maybe the plant just ended up in the coldest location in my garden. Or maybe the plant wasn't established enough.
A few others being grown outdoors by friends...
Hoya carnosa
Hoya linealis
Hoya obovata
Hoya pubicalyx
Here are some that might work based on their distribution...
Hoya acuminata
Hoya acuta
Hoya aldrichii
Hoya amoena/verticillata
Hoya angustifolia
Hoya arnottiana
Hoya bhutanica
Hoya burmanica
Hoya chinghungensis
Hoya crassifolia
Hoya edenii
Hoya erythrostemma
Hoya fusca
Hoya gonoloboides
Hoya griffithii
Hoya kanyakumariana
Hoya krohniana
Hoya latifolia
Hoya lobbii
Hoya manipurensis
Hoya micrantha
Hoya motoskei
Hoya nicholsoniae
Hoya oblanceolata
Hoya oreogena
Hoya ovalifolia
Hoya pachyclada
Hoya pallida
Hoya pandurata
Hoya parviflora
Hoya pauciflora
Hoya pottsii
Hoya pseudo-littoralis
Hoya retusa
Hoya revolubilis
Hoya rigida
Hoya teretifolia
Hoya thomsonii
Hoya vaccinoides
Hoya weebella/dickasoniana
Hoya wightii
I'm looking forward to hearing the experiences of other people who've been growing Hoyas and Dischidias outdoors in Southern California. I'm definitely interested in trying new species so if anybody in my area is interested in trading...please send me a message.
Also posted to...
Edited by epiphyte
0

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0

  • Similar Content

    • Coconut damage and treatment
      By pj_orlando_z9b
      Hi, new poster here.  Look forward to good discussions.  Have a coconut in Orlando.  Planted it in 2015 and made it through unprotected 2 winters just fine.  Got hit by the January 2018 freeze. (6 hours below freezing, 4 hours @ 28F).  
      Protection: C7 lights around trunk wrapped in burlap and bed sheets.  Inside thermometer by trunk never got below 40F.
      Symptoms: New spears starting pushing out just a few weeks after the freeze. In March, it started showing signs of complications or stress. New fronds are wilting and some necrosis appearing. Last 2 fronds wilting in almost a "U" shape.
      Treatment: After seeing some necrosis or signed of fungus, I did a treatment of fungicide and hydrogen peroxide.
      Fertilizer: Like most others in Central Florida, I get spring stress from lack of Mn and K.  I did my normal treatment fertilizer, K, and Mn on 4/1 (I have a regular treatment 4x per year)

      1-2 weeks after freeze (2/1):

      Today (4/24)

      Today (4/24) Emerging spears looking ok

      Palm meristem seems fine.  I tug once a week and no signs of spear pulling out.  Whether it is cold damage or fertilizer, is this normal after a stress event?
    • Florida 2018 Wundermap Wallop
      By Xerarch
      Took these Wundermap screenshots this morning around 6:45, not sure if it was the bottom of the cold spell but here it is. 
      I see some quite notable cold on here, even freezing temps throughout central Florida even on barrier islands. 
    • Winter solstice 2017
      By Tracy
      I thought it worth noting that it's the winter solstice in the northern hemisphere today.  I like to celebrate the fact that after this, the days get longer even though autumn has come to a close and cold winter has arrived.  I'm sure my friends in the southern hemisphere are excited at the arrival of their summer today as well!  The good news locally was that we actually got rain in my part of Southern California which was a welcome break after a very dry late autumn which correlated to all the fires.  I haven't looked at weather maps to see if Ventura and Santa Barbara Counties were so lucky as to receive some rainfall, but I know it would be a helpful respite in fighting the fires.  The locally bad news is the clearing winds from the system passing which turned into a Santa Ana (dry offshore winds.  This will not help firefighters. 
      My garden doesn't seem to mind that it is now winter, it has just sloooowed doooooown a bit on the growth with the cooler night temps and shorter days.  How is your garden doing this winter solstice?
    • Snow in the South
      By PalmTreeDude
      Well this is interesting... How Is everything fairing? We have light flurries right now and may get more, but temps are not suppose to go below 30 degrees F.
       



    • Hemiepiphytes for somewhat cold zones? (7b)
      By jb1336
      Looking for Hemiepiphytes for zone 7b. I was thinking of wightia speciosissima but I don't know any sources or their hardiness.