New tree fern mount growing blue-ish mold.
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  #1  
Old 11-15-2024, 08:45 PM
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AndreaK AndreaK is offline
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Default New tree fern mount growing blue-ish mold.

It has been several years since I've posted anything. I am getting back into growing after a long delay. I lost the majority of my orchids after a move, followed by a house fire.

It's a new tree fern mount. It came in a pkg. of 2. The first mount was placed in a terranium in April. It has shown no signs of mold. This 12x12 mount was split between 3 plants two weeks ago. There was no signs of mold until this week. On Tuesday, November 12, it was watered and fertilized. It seems to be staying wet longer with the temps in the low 70s to high 60s. I have a ceiling fan and two small fans, for circulation, in the orchid room(10ft×12ft). Should remove the plants, discard the mounts, and treat with a fungicide? If there is a way to keep the mounts, that would be preferred. Also what fungicide do you recommend? A photo is attached
showing the stage of the roots. It was a bare root Cattleya that was purchased at the Redlands Rare plant festival in October. The 2 other mounted plants have roots at about the same stage.
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New tree fern mount growing blue-ish mold.-20241115_175531-jpg   New tree fern mount growing blue-ish mold.-20241115_175635-jpg   New tree fern mount growing blue-ish mold.-20241115_175719-jpg  
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Old 11-15-2024, 09:49 PM
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New tree fern mount growing blue-ish mold. Male
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Welcome back! I hope the fire wasn't too traumatic.

Those are fruiting bodies of fungi growing on dead material. It won't harm your plants, but it is an indicator of insufficient air exchange, and perhaps excessive wetness. I wouldn't treat with anything. Improve the air exchange and let things get a little drier between waterings.
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Old 11-15-2024, 10:33 PM
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Thanks for the advise. I already moved the plants closer to the fan earlier. Hopefully, drying out does the trick. The fire was in the furnace resulting in mostly floor and joist damage(1 story with a crawlspace). My husband (got burned fingertips) and son managed to get it under control before the fire department showed up. Mainly just miserable repair conditions with temps in the negative range, wet mud, and snow. The smoke filled with melted plastic fumes and the shock of those cold temperatures were too much for most of the orchids. I did manage to save a little noid dendrobium that I've had for over 30 years and a Brassavola nodosa.
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