I have used a cocktail of SuperThrive and chelated iron. I used a 5 gallon bucket and dumped some of each then added water. Poured into tree well. Google Chelated iron for plants for more info. Here's one article but it's about forestry trees.

treating-iron-chlorosis-in-trees-and-shrubs

another: iron-chelate-yellow-leaves

Both articles talk about foliage spraying the chelate. BTW, the chelate will stain the bucket red.

GL, HTH.

I second sunburn, looks like the leaves are bleached by the sun. Here's a good source for diagnosing these things: http://extension.arizona.edu/sites/extension.arizona.edu/files/pubs/az1492.pdf

Please update the forum if the chelated iron works. I would like to know because my Meyers seem hopeless and I am just hoping for a fall recovery.

With our high-PH soil, plants have a lot of difficulty absorbing Iron, even chelated. For our soil, it's best to use EDDHA Chelated Iron, which will be more expensive but can be absorbed much more efficiently.

My bet is nitrogen deficiency but possible iron deficiency is right behind. The plants have a hard time getting iron out of our soil at high temps, and I can't remember what happens to the nitrogen at this time of year but our soil is just generally lacking in it.

I would go grab some fish emulsion (white Alaska brand bottle) and chelated iron (blue bottle) at your local orange big box store ($25 for both in gallons) and mix up a spraybottle with these two diluted properly. Spray the leaves of the tree at night. Try to stand down wind!

Then on your next watering, mix up the fish + iron into your water (at correct dilution) and pour into your basin. Let us know how the tree responds.

edit: Also I'd like to encourage you to rake the gravel away from this tree's base and put up a berm (little moat) with wood chips around it. The gravel retains the heat and does not add any nutrients to the root zone. And consider shading this guy a little - it is very small for a 3rd year tree. Needs some babying.

Are those products available at home depot/Lowes, or do I have to go to a nursery? The tree actually does have a basin with a berm around it, but you can't see it with the plants that volunteered there (I think they're coreopsis? I planted them one time and they come up all over the yard now).

"at your local orange big box store " This is Home Depot.

I can sort of see a moat but it needs to be a bit larger, at least out to the current drip line.

oops, I guess I missed that part. Had a tooth pulled Wednesday and I guess I'm still a little loopy :) The basin probably should be made bigger, the tree has grown a little since I made it.

Mary is right Leslie, the drip line for the tree is at least as large as the canopy, so you want to make the basin that large at minimum. I generally make at least a 3' wide (diameter) basin area for each new tree. (In later years the basin will need to grow with the tree.)