Yellow on cattleya pseudobulbs and leaves

[CindyBallard]

Well I have been busy, I have purchased trays and pots and have repotted nearly all of them AND (big effort!) emptied the shadehouse and got a gang of about 10 of us to move up the hill to an almost full sun position. I have a lot of really big trees and have very few full sun positions so I expect some changes and may need to consider the Magnesium and Epsom Salt additions!

When I was moving them, one did come a cropper and sadly I noticed ants in the bark - I think I am going to use Ant Powder but do you have any other suggestions? I have no idea what kind of ants they are but they are a reasonable size.

Thanks for your help.

[VMStearns]

I struggle with ants in my neighborhood all the time. Our area is particularly infested. We always start the year using a bait that worker ants will perceive as food and take to the queen. This kills the colony.

There should be a county extension agent that can provide help with identification and recommendations of effective baits for the particular kind of ant in your bark.