Welcome to OrchidsForum.com. We are a friendly online community for Orchid Growers all over the world. If you haven't joined yet we invite you to register and join our community. Hope to see you on our forums!

Mediocalcar decoratum care?

Discussion in 'Orchid Culture' started by jai, Jun 6, 2016.

  1. jai

    jai Orchid addict

    Messages:
    915
    Likes Received:
    118
    Location:
    youngstown ohio
    Does this one prefer to stay moist longer or dry fast after watering? Also how long to wait between waterings?
     
  2. KellyW

    KellyW Orchid wonk Staff Member Supporting Member

    Messages:
    6,435
    Likes Received:
    2,208
    Location:
    Redding, California, USA
    I have found this species to be very forgiving of conditions once established.

    With cuttings I have found that they will rot easily if kept too wet. My best success with establishment has been horizontal on tree fern with no moss or in a pot/tray with LECA. Shady. I think the trick is to keep the roots in contact with the moist medium without the green parts staying wet. I suggest daily water.

    Once established I have grown it shady or bright; moist or dry but it still seems to prefer a horizontal orientation.
     
    jai likes this.
  3. czpana

    czpana Member

    Messages:
    80
    Likes Received:
    28
    I struggle with cuttings of this one, I had it mounted and it struggled then too moist. Finally it rotted. Try to find one that is well established
     
  4. spiro K.

    spiro K. Active Member

    Messages:
    380
    Likes Received:
    215
    Its relatively easy for me, mounted loosely on tree fern,shady and watered often.
     
  5. jai

    jai Orchid addict

    Messages:
    915
    Likes Received:
    118
    Location:
    youngstown ohio
    I have mounted it on a piece of cedar with coconut husk. I have it laying on top of a tray with LECA pebbles and some water. I will mist daily and see how it goes. Thank you all for your advice:)
     
  6. Fredmax

    Fredmax New Member

    Messages:
    19
    Likes Received:
    3
    Location:
    Sth Aus
    I concur on them being difficult to establish, I have lost a few cuttings and have tried to identify the cause - either too bright, too wet or a fungal issue. This is my latest failure I believe it may be rotting so am moving it from sphagnum to bark, or may try leca as mentioned earlier after a spray of fungicide.
     

    Attached Files:

  7. Chuck-NH

    Chuck-NH Well-Known Member

    Messages:
    1,763
    Likes Received:
    1,594
    Location:
    New Hampshire, USA
    Hi there, the photo you posted does not look like decoratum. It does look like a Mediocalcar though. Do you have a photo of the mother plant with blooms?
     
  8. Roberta

    Roberta Member

    Messages:
    87
    Likes Received:
    43
    Location:
    Coastal southern California
    I was going to say the same... It looks a lot more like my M. versteegii. I got that one on a slab that it was growing off of... I took a wood basket, filled it with sphagnum, used some wires to hold it in place when I inverted it - so the flat surface of the "bottom" of basket, now on top, served as a substrate for the slab. The plant is a rambler, and rather quickly started growing off the slab and rooting into the sphagnum sticking out of the slats. So some roots went into the medium, the rest are just "wherever" in the air but the sphag apparently is providing the humidity that it craves. One note... since it is horizontal, hang it where raccoons can't reach it... I lost a nice one of these to a 'coon that decided to shred it, was near a fence.

    M. decoratum has rosettes of small, succulent leaves. Similar habit, it wants to be "on" the medium rather than "in" it.
     
  9. Fredmax

    Fredmax New Member

    Messages:
    19
    Likes Received:
    3
    Location:
    Sth Aus
    Yes sorry this one is versteegii I got confused, I've now taken it out of sphagnum and popped it in some bark and a spray of phosacid fungicide. The browned leaves look burnt but still looks like I've kept it too wet and got a fungus - it just looks like a plant that wants to be damp... I've banished it from the greenhouse though and is sitting on my windowsill where I can monitor it and keep it on the dry side for a few days. I'll conquer these eventually though may need to stop getting bare root cuttings :-/
     
  10. Roberta

    Roberta Member

    Messages:
    87
    Likes Received:
    43
    Location:
    Coastal southern California
    P1190699.JPG This is what I did with M. versteegii... it has now grown a lot more.
     
  11. J E

    J E Member

    Messages:
    62
    Likes Received:
    24
    I have mine in a basket with bark it gets lots of water and good airflow+very high humidity. They like frequent water but they don't like to be smothered at all they need air avoid moss
     
  12. Fredmax

    Fredmax New Member

    Messages:
    19
    Likes Received:
    3
    Location:
    Sth Aus
    Wow that's outstanding, I can only aspire to have one looking that healthy. So bark is now the go and fresh air, what I'd like to try is keep it out of the 75% humidity in the greenhouse and let it air out for a few days to help dry out any fungal issues. Roberta does yours ever sit outside in lower humidity and handle it ok? The backyard is around 30% in Nov.

    I honestly think I've drowned it (and my Ceratostylis which mirrors this) by growing in sphagnum and having misting systems run 15s every 5 mins to keep the heat down, or I should've just got an established plant as was mentioned.
     
  13. Chuck-NH

    Chuck-NH Well-Known Member

    Messages:
    1,763
    Likes Received:
    1,594
    Location:
    New Hampshire, USA
    Hi Roberta, do you have an in bloom photo of your versteegii? M. versteegii should be primarily unifoliate with most blooms heteranthous in nature. I find most plants labeled as this are something else. I highly recommend the Orchids of New Guinea website that has very good keys and in situ photos. Also Ron Parsons has very good photos that he has posted on the web.
     
  14. Chuck-NH

    Chuck-NH Well-Known Member

    Messages:
    1,763
    Likes Received:
    1,594
    Location:
    New Hampshire, USA
     
  15. Chuck-NH

    Chuck-NH Well-Known Member

    Messages:
    1,763
    Likes Received:
    1,594
    Location:
    New Hampshire, USA
    Just wondering if heat and stagnation may be an issue since you mentioned the frequent misting. I also wonder if it could be more of a bacterial rot if it has been weakened by prolonged heat? I grow quite a few species of Mediocalcar, all in intermediate to cool conditions. Some are in net pots with NZ Sphagnum and some are mounted. I water in the morning and they never dry out...but as others have posted, I have good air movement and the foliage is generally dry by the end of the day. A few photos posted.

    variegated decoratum (net basket in Sphagnum)
    9F9570F1-F79B-40E1-A9FF-4F8EC1D24683.jpeg

    bifolium in net pot (Sphagnum)
    3FA81E1B-90C5-4493-B4B6-D503E380389F.jpeg

    agathodaemonis? Doesn’t match key
    9772DDAD-F01D-4DAB-86FE-F380F61C6083.jpeg
     
    J E likes this.
  16. Roberta

    Roberta Member

    Messages:
    87
    Likes Received:
    43
    Location:
    Coastal southern California
    My M. versteegii (as well as decoratum and pygmaeum) live outdoors all year around (frost-free coastal southern California) Nights can get down to near freezing on occasion but not often, humidity can drop to single digits (usually with heat), not often but when it does, can go for close to a week. When it gets dry, I just water more (even twice a day if hot). Neither these, nor anything else including Pleurothallids seem to care. (Might lose a few Dracula flowers, but the plants are fine)

    Here's the plant in flower. Chuck, if not the correct ID, any idea what might be? M.bifolium maybe?
    5191C_Mediocalcar versteegii 2.jpg 5191P_Mediocalcar versteegii.jpg
     
    J E likes this.
  17. Chuck-NH

    Chuck-NH Well-Known Member

    Messages:
    1,763
    Likes Received:
    1,594
    Location:
    New Hampshire, USA
    Yes Roberta, I would definitely lean towards bifolium and there does appear to be some variation in bifolium in the various clones of it. You should have a real big specimen in a few years!
     
  18. Fredmax

    Fredmax New Member

    Messages:
    19
    Likes Received:
    3
    Location:
    Sth Aus
    Seeing these pics give me something to work towards....great to hear they can exist outdoors that may be my new strategy at least til things get better.

    Re: airflow I have a box fan running 24/7 to keep air moving but put it in a shady more stagnant area since I thought it got burnt, it's just odd since 100's of other plants & seedlings are doing ok but this plummetted. M agathodaemonis seems quite happy in sphag and a clay pot. I don't know if it's bacterial, the little spots are a worry, maybe I can spray it with an algicide but don't want to overload it after dousing it with phosacid antifungal, we've only had odd hot days as summer hasn't started yet here for the prolonged heat.

    I know this as a cooler grower, but aren't sure of it's higher temperature thresholds, now I know it can tolerate short spells of lower humidity I might be able to deal with fungal and being too wet as long as I don't wilt it in the hot shade.
     
  19. J E

    J E Member

    Messages:
    62
    Likes Received:
    24
    Every 5 minutes is a bit extreme they need a more wet-dry cycle. Otherwise that sounds like it would work ime. Also i grow them right under Ceratostylis so the care just a bit less light and i water Cerats a little bit more frequently. It stays cool as well with nice night time drops remember it's from the same place as D cuthbertsonii just lower elevation.
     
  20. Fredmax

    Fredmax New Member

    Messages:
    19
    Likes Received:
    3
    Location:
    Sth Aus
    I realize unfortunately it's my only real way of keeping the temps down, tomorrow and the day after is 40c, some of the plants really seem to like the monsoon effect but I think the ones that haven't (Mediocalcar, Ceratostylis and Den papilio) may have to be excused from the g/h and popped in the dryer shade with the Stanhopeas during Summer.
     
    J E likes this.