For deer and rabbit problem this may work. http://www.gqfmfg.com/pdf/GardenGuardian.pdf that pdf show guardian birdhouse #9505 model number. www.GQFmfg.com will get to web site. this bird house has 4 red flashing light and 4 blue flashing light all are ramdom flashes. Rabbits bird house need tobe mount 2 foot off grond blue light is scare for rabbits I was going to try led blue christmas lights but went with birdhouse guard rabbits just don't eat bark here at my home I'm just throwing this in as you may have string blue Led lights. Ramdom flashing is name game when trying scare off any animal about 4 patrend need scare deer birds of pray awls hawks coyotes. Rat terror dog (Jack & Jill my greeters) and blackbirds don't pay any attention to lights. It will not work on song birds. One other thing its solar power thanks to larrygene and pinkswine for help with links. One these have range they work 100 foot radius so want work for front and back yard at same time at 79.95 there not cheap but encore roses cost more than that and small money pit in chickens I had long 4 toed stand build so could move it around.

Your trees going to have any branches and leaves that throw shade onto the trunks?

Suga, that kind of trunk damage is probably caused by an injury that occurred a long time ago. It could have been banged into or met the business end of string weeder a few times. It might even be rotted from an irrigation head pointed the wrong way. Wood decaying disease organisms find their way into trees that way and are able to continue the job , often for the rest of the tree's life. By all means, apply some wood chips near the tree, but not close up against the trunk. You'd be doing it a huge favor if you mulched that entire planting bed...I assure you that the root system is established throughout that entire space. My advice is to forget about 'a circle of wood chips around the trunk', and apply, instead, a generous layer of mulch for the whole area. You are likely to damage roots if you decide to plant anything further in that little area surrounding the tree. You may decide it looks a whole lot better after you apply a 2-3 inch layer of mulch! Think of mulch as part of the landscape design. Citrus fertilizer should be available in the garden centers where you live. Be sparing with it. You don't want to encourage a great deal of vegetative growth that the tree may not be able to support (in terms of take care of). By the way, there is nothing at all you can do to repair the damage to the trunk. The single best medicine for the tree's health will be the mulch. Please know that our 'city trees' (as in city mouse and country mouse) often don't fare very well in the long run. They are confronted with evil machines, concrete and asphalt, soil compaction, over crowding, and the like. ;-) The urban tree has a dramatically reduced lifespan, just because of the nature of its environment.

Ariel, I see no one has responded, so I'll try to jump in, here. First, check your tree to see if you have any bugs of any kind. It looks to me like an injury, either mechanical, or possibly from an insect infection. The insects that can cause this sort of injury are sucking insects - aphids, scale, wooly aphids. I don't see anything obvious like that in your photos, but check the undersides of your leaves. Also, check that branch where it branches off the trunk, and look for a mechanical injury. Yes, your tree is chlorotic. You need to fertilize your Meyer frequently, and yes, cooler weather can affect nutrient uptake in our neck of the woods, based on our water having a little bit higher pH (not bad, but sometimes just enough that the pH in combination with colder temps can lock out the uptake of Manganese 1st, and then Iron, 2nd.) So, be sure to fertilize your tree regularly. I like to use DynaGro's Foliage Pro, 1/2 strength in the winter, then full strength in the summer. I also use a slow release fertilizer as well. I used to use Osmocote's product, but it has been discontinued. I would suggest Dynamite's slow release fertilizer, the one formulated for citrus, all-purpose or all-purpose select (whichever has the best spread of micronutrients). Patty S.