Miltonia - Brown Spots

[Raven]

Hello, (from Edmonds, WA)

I just picked up a Miltonia in bloom (purple and white blooms).

As with all plants that I bring in from the grocery store, I've isolated it from other plants and have treated it with pest/fungus spray (neem oil, H202 conc., soap, hot water).

I decided to repot it, and while tickling the roots apart realized that there were several groups, so I split it into two pots (could have split into three).

The one smaller bunch has brown spots on it, about pea sized, coffee brown, and not really soft or slimy.

I read somewhere on this forum about brown rot in Miltonias being a combination of fungus and bacteria (could not find that post again).

My concern: can the bacteria that affects the Miltonia also affect other orchids and houseplants? If so, what do you suggest as the best treatment for the Miltonia and best preventative for the other plants?

Thanks.

Raven

[Dorsetman]

Technically I suppose it is possible, but in practice, no. I have had Mtps in my mixed collection for many years, and often seen this on them, but never on anything else . It is just something they are prone to, and others not.

[JDT]

Same with me, but you might want to take the one that you see the spots and keep it away from your other orchids to see if it gets worse after you treated, if not then you should be fine. Well worth the precaution!

[CattyRobb]

I swear sometimes it seems half the battle is knowing which spots to be concerned about on your plants.