HELP! Almost all of my bottle brush are dying
Help!! My bottle brush are dying. About 3 years ago I moved into this house and the bottle brush were very healthy it looked. I live next to a canal that was covered years ago and now has only concrete pipe. 20 feet from the row of bottle brush is a huge huge eucalyptus. I also have near by, a kind of a Willow tree but medium in size. A mulberry is just 3 feet away also and another one further and it's gone now. I am trying to grow a blood orange tree and it seems the top is dying but there is new growth at the bottom. My bottle brush are in a row along a wood fence I put up when I moved in. I had 12 green and mid sized bottle brush. Now I am down to 6 and each one is starting to die from the top going down. I have been watering all trees but Ithought the bottle brush were drought resistant or tolerant
My pops had dug a little trench along the bottom about 2 years ago and decided t oflood it. Since then my trees have been dying. I tried to do the same also about 1.5 year ago to the mulberry and now its pretty much gone. It looks worse now than in the photo. The photo was taken 3 months back.
Is there anything I can do to save any of them? The other trees are doing fine so far, I have another mulberry that gets watered a lot cause of the grass but I have even been watering the other tree and they are not doing good. I do water the grass with the water from the canal using a pump .