SantaFeBonsai
Shohin
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Have you seen this chart?
View attachment 153112
It's old but still helpful for predicting pH related nutrient deficiency. I have noticed a big improvement in the color of some plants when I drop the pH of my tap water from 7.8 to around 6.0
My guess would be chlorosis. If the leaf is yellowing from outside in with green veins thats almost definitively chlorosis. Thats some hard water. Damn. Have you tried using a water basin and leaving water sit a few hrs to bring the ph down? You can also use soil amendments for ph. They can take a few weeks to set in.
How about a picture of the whole tree and where it sits at noon during the day. I see much greener leaves in shaded portions of the canopy. Tridents can tolerate a lot of sun, but have mechanisims to counter the brite sun.
the brown tips and green veins in the first two pics?I don't see any problem.
I was waiting on buffer solution to calibrate the pH meter and it arrived Friday PM, Saturday watered at 6.5 pH on a basil plant. You wouldn't believe me how much of an improvement it's made in 48hrs. I've been growing basil for 20 years and I don't ever remember a basil this green. Looking at my nectar plants I see several that might be suffering the same problem.
I will be watering the maples and junipers with 6.5pH starting this am. I'll post updates.
Spray with daconil weekly
Have you seen this chart?
View attachment 153112
It's old but still helpful for predicting pH related nutrient deficiency. I have noticed a big improvement in the color of some plants when I drop the pH of my tap water from 7.8 to around 6.0
How viable is a rain barrel for you? I have some pretty hard water, but my trees can get everything they need from a couple 10-gallon (that's 38ish liters) buckets set out to catch rain from the gutters. I just make sure not to let them get stagnant or fill up with mosquito larvae.I've always had a leaf problem with my Acer P (maple), and they are watered with tap water. My area is in the highest zone for hard water. Wondering if all my problems are just linked to my tap water....
How viable is a rain barrel for you? I have some pretty hard water, but my trees can get everything they need from a couple 10-gallon (that's 38ish liters) buckets set out to catch rain from the gutters. I just make sure not to let them get stagnant or fill up with mosquito larvae.