Troubling trees

Can't help you with yours, but the same thing happend to mine a few years ago. Shiloh Nursery had to replace and plant me new ones. This time I went with all blue spruce and they're doing wonderful. Hope you find the cause before losing them.

I have very limited knowledge on the subject but the past I've seen that happen to Leyland's (which are a great tree) when they have what I think are called bag mites on them. There are little brown bags "grow" on the tree that can be pulled off. However this doesn't seem to be the case. A call to a local nursery would probably be best.

Use Diazinon Liquid as a drench to kill the ants.

The trees will grow through the brown areas in 1-2 seasons.

Use Holly-Tone in hot water solution and pour on to each rootball for quick-feed. Use again in Dec for over-Winter growth flush for Spring.

Use Diazinon Liquid as a drench around the rootball to kill the ants.

The trees will grow through the brown areas in 1-2 seasons.

Also, use Holly-Tone, 2-3 handfulls, now in a bucket of hot water solution, and pour directly on to the rootball for a quick feed.

Use it again as dry granular in Dec for over-Winter feed and Spring growth.

Easy fix; no need to replace. We deal with this all the time.

Is Diazinon/Holly-tone Ok to use if you have pets that roam the backyard?

The Diazinon Liquid will be absorbed by the soil and, unless your roaming pets eat the soil, won't affect them.

Also, you're turning granular Holly-Tone into a solution w/ hot water in a bucket, and pouring it directly into the root system. Again, no harm to pets.

In Dec, a few handfuls of granular H-T around the base of each Leyland will be dissolved by snow melt and rains. Once again, no harm to pets.