My maple trees were very pale and the started losing their leaves very early in the fall. I read that they were needing iron and decided to try this product. My trees are now very green and have filled in a lot. I highly recommend this product.

I've tried Ironite, liquid and granular, as well as other products. I drilled holes in the dirt at the drip line to no avail. But this stuff worked fast and strong. The leaves on my sweet gum tree are deep green. And it's only been about 5 weeks since application. Be sure you have a half inch drill and/or bit!

My trees were needing a little TLC. I have seen some new growth that looks much healthier.

I wish I'd known about these years ago, I could've saved myself a lot of wasted time and money. I had already known that the trees, all pin oaks, needed iron. All 3 trees were affected differently yet all 3 were planted in 1997 and weren't more that 75 feet apart planted in my back/side yard. One tree started turning yellow years ago, about 2010. All 3 would bloom normally, leaves would start to grow, but as early as mid May one tree's leaves would start to turn yellow. By June most of the leaves would be yellow/brown and by July the tree would look like it would in fall, October, ready to drop all its leaves. The second tree was affected less, just spots here and there on the tree, maybe only 40%. The third tree, in my side yard, was literally two toned starting in May. Actually, it had 3 different shades; one third lighter green/yellow, one third just a slight yellow tinge and one third normal dark green. I read all I could about feeding the trees, even going so far as drilling 1/2" holes in the GROUND around each tree and pouring an iron rich solution into the holes. That did nothing, I thought they were just going to slowly die. The lower branches on all the trees would be dead the following year. Not sure how I stumbled upon the Medcap capsules but I figured that since I'd tried everything else I had nothing to lose.
I was, naturally, leary about drilling a dozen holes into each tree but I knew if I used a nice sharp bit, took my time and made sure I didn't drill into the tree too far I should be OK. I drilled into all 3 trees near the end of March this year, installed the capsules, and waited. Naturally you won't see anything right away but by the end of May I knew it was working. No yellow or brown anywhere on any of the trees! I kept waiting, thinking that al least a few of the branches would turn yellow but it never happened. This is the first year I've tried it but so far so good - it looks like my problem has been solved.
A couple of things; if you look at the pictures I posted, the tree that's pictured is in my side yard. The 'before' pic is from October, 2019. The 'after' pic is from September 19, 2020. I didn't realize it at first, but the brown fur ball in the grass in both pictures is my dog Maxie. The other picture is of a trunk that's weeping a bit after having the capsules installed. This is normal but I think you may be able to minumize the weeping somewhat by drilling the holes at a very slight downward angle, maybe only 5 degrees or so. Also, I've noticed that if you drill the holes just slightly deeper the hole won't weep as much. The thing is, you have to get below the bark so if you drill 1/8" deeper it's better than drilling 1/8" too shallow.
Anyway, hope this helps, it certainly did for my trees!

I live in the Austin Texas area. We had a large oak tree with leaves that turned yellow shortly after leafing out each year. The tree appeared to be dying and we were considering having it removed.

As a last resort, we got the opinion of a local tree professional. He mentioned he believed it was a problem called iron chlorosis in oak trees, where the tree doesn't absorb enough iron due to the pH levels in the soil.

Per his suggestion, we initially treated the tree with a liquid iron supplement that was added to a large bucket of water and poured around the base and dripline of the tree. Unfortunately, even multiple liquid treatments didn't seem to help.

The professional mentioned that if the liquid supplement didn't work, he could come back and drive in iron "capsules" around the trunk of the tree. He also mentioned it was fairly expensive, so I was looking online for something similar and found this product.

The Medicap iron implants seemed to work magic on the tree. Within a few weeks of application, the leaves started turning greener. I actually applied the Medicap iron implants in the spring of 2021 and the tree looked healthy by mid-summer. I placed an additional order and applied again in the spring of 2023 as the tree absorbs the iron from the implants over time, so you must apply every two or three years.

The application process does require drilling some small holes in the tree bark and tapping in the plugs with a hammer, but overall, it took less than half an hour and saved a few hundred dollars. (Also, you shouldn't re-use the holes drilled for prior applications as it may damage the tree).

I'm grateful for an honest tree professional that helped me diagnose the issue and to Medicap for selling a great product!