Why are these Evergreen's yellowing [PICTURES INSIDE]?

Question

I have evergreens on my property but cant figure out why they are yellowing/browning in their leaves and falling off....is it a disease? Is there somehting i can check to confirm this? Or to stop this? Or maybe it is just age of these trees?

Here are pictures:

Top Portion of the 1st tree(Looks Normal): http://i237.photobucket.com/albums/ff85/quantass/IMG_0063.jpg

Bottom Portion of 1st tree: http://i237.photobucket.com/albums/ff85/quantass/IMG_0060.jpg

2nd tree TOP: http://i237.photobucket.com/albums/ff85/quantass/IMG_0058.jpg

2nd Tree Bottom: http://i237.photobucket.com/albums/ff85/quantass/IMG_0057.jpg

Smaller Trees:
http://i237.photobucket.com/albums/ff85/quantass/IMG_0066.jpg
http://i237.photobucket.com/albums/ff85/quantass/IMG_0065.jpg
http://i237.photobucket.com/albums/ff85/quantass/IMG_0064.jpg

Answer 1

looks like a disease--I think pines / have like certain diseases that are indigenous & common to them.

Mine did that one year & I think it recovered by itself. ? I don't recall treating it anyway.

Great that you have pics tho--you can probably go to a gardening site & submit pics for an instant answer!

Answer 2

Browning is usually a sign of not enough water. Yellow is usually a sign of too much water. Also it appears from the photos as though there isnt a great deal of sunlight to the trees. I imagine that the shrubs near your trees used to be much smaller and allowed much more sunlight to the evergreens. The canopy over head changes from year to year as those trees grow as well. Just because we started with particular plantings doesnt mean that they are always the best for the location. Pruning regularly is really important to the health and growth of your plantings. I would suggest that you prune all the shrubs back allowing more light to the evergreens during the summer months. The planters around the trees also keep a good deal of moisture from entering around the base. Maybe enlarge the holes around the trees and begin a regular schedule of fertilizing. I believe you can save them with a little work. Good luck to you.

Answer 3

These types of plants, junipers, can have a tendency to do exactly what yours are doing. Here's what the Sunset Gardening book says that sounds similar to your problem: Juniper blight causes twigs and branches to die back. Or it's possible you could have spider mites or aphids. Says to control with copper sprays in July, August. Also, I suggest you look at the living conditions. Sunset says they like sun on coast, sun or part shade inland; some summer water in hot areas. Your yard would look so much more attractive and pleasing to the eye with other shrubs besides junipers.

Answer 4

It looks like they are all in the pine fir tree category, and the way our summer was, they need lots of water, I would take a sprig to my local nursery and they can identify this for you, I could say it might be a beetle or something else, but they will give you the right answer.

Answer 5

spider mites