Vanda denisoniana Orange FUNGUS?

[Sheryl]

Help! I've had this orchid for almost 2 years. It has not bloomed for me yet and now this ugly ailment. What is it?

[zainal abidin]

Waaa ... a bit difficult such a very pretty plant you got there better you cut off the yellow leaves and spray with fungicide keep him dry in between watering and isolate the plant. I wish it will work for you Sheryl.

[Sheryl]

Thanks Zain. I've been removing them as you can see and spraying with Neem. But it continues to spread up😪 I'll continue spraying and keep my fingers crossed 🙏
Posted via Mobile Device

[zainal abidin]

Thanks Zain. I've been removing them as you can see and spraying with Neem. But it continues to spread up�� I'll continue spraying and keep my fingers crossed ��
Posted via Mobile Device

Be prepared in case in worst scenario they spreading upward get ready to cut the plant 1 to 2 inches below the aerial root and make sure the cutting surface is free from the disease.

[Arne]

The exact same thing happened to my first two plants of V. denisoniana. In both cases it started a few weeks after they arrived in April and my guess is that the plants, which were not seed grown in the US, were used to warmer conditions. I finally got hold of a denisoniana grown from seed in the US and it is a very strong grower that doesn't show any of these tendencies. You should be able to save your plant I think but but you must be quick and you should try something more potent than neem oil. Try Thiomil or Cleary's 3336. Other than that, just follow Zain's advice.

[Sheryl]

Interesting! Thank you Arne!

---------- Post Merged at 01:47 PM ----------

It has all those healthy roots below, but hope you can see the very large thick root mid plant. Should I cut a couple inches below that and not worry about detaching all those bottom roots! I'm wondering if it produced that nice root knowing something I didn't know!

Be prepared in case in worst scenario they spreading upward get ready to cut the plant 1 to 2 inches below the aerial root and make sure the cutting surface is free from the disease.

[Arne]

When you have come to terms with the worst case scenario, then cut 1-2 inches below the thick root on the upper part part of the plant. If there is a dark discoloration, sterilize the knife with a flame and cut again a bit higher up until it looks healthy. Be sure to use a flame.
Discard the rest.
Good Luck!

[Dorsetman]

This is what happens to old fogies - bits fall off. Its happening to me right now... (joke). But seriously, it is just old age. Making a top-cutting is the answer, but beware, it will be some time before it is strong enough to flower again. Personally, since I am an antique, and won't last for ever - and people keep telling me I can't take "it" with me, I scrap plants like this, and go shopping for a replacement. What I ought to do, is just scrap them - since I am trying to rduce my overcrowding, but hey, that's too difficult. I can resist anything except temptation....