Rotted new growths on cymbidiums

[orchidgiants]

We have been growing about 10 cymbidium plants for about the past 8 years and have never had a problem with rotting new growths. We now have a plant that has rotting new growths. Just pulled out the 2nd one tonight and took some pictures. We grow outside in the back yard in California, and treat them with Bayer AllInOne Rose Care to keep the scale under control. We water with the hose.

We got this plant about 5 months ago from the Opportunity Table of plants provided by the speaker at our local Cymbidium group meeting. It's an unbloomed plant of a new cross he made. It had 2 visible new growths at the time, and the speaker told us to repot it when we got home, which we did, into a sterilized pot. We discovered a 3rd new growth during the repotting. It's been growing well for last past few months, but just recently two of the new growths rotted.

From what I've found on the internet, it looks like this rot is caused by a bacterial or fungal infection, and is possibly related to over-watering. Any idea if we should be treating it with some other chemicals, taking it out of the pot and checking the roots, or is just pulling out the rotted growth and hoping for the best all we can do? We really want to bloom this one to see how the flowers turn out.

This is a picture of the rotted new growth that we pulled out:


Here is a picture of the place in the plant where we pulled it out from:

Thanks.