I got these two red buds as seedlings and they've grown a lot, but haven't been able to shake this spotting that appears on the lower leaves and slowly spread around the leaf and then up the stem to more leaves. I've tried spraying them with pesticide/fungicide, cutting off infected leaves, looking around for pests or other signs and everything hasn't worked or turned up nothing. I traded for these plants and only have 2 and would like them both to survive, so I'm worried about them.
They are near my other plants and have been most of the summer, but only the redbuds have signs of this. The red buds were recently repotted, but this was happening before that, and they have no signs of transplant shock. They are both growing new leaves like normal and are otherwise very healthy plants. Should I be concerned? What could it be?

There is some nutrient deficiency signs, but I already corrected those and the new leaves are normal-colored.

When you repotted the plant did the roots look healthy? I wouldn't rule out a fungus , eastern red buds are susceptible. A fungus spray can help . Or .. it's small enough to take the plant to a nursery ask for advice. Keep it separated….and cut off the defective leafs .

bumplbea said: When you repotted the plant did the roots look healthy? I wouldn't rule out a fungus , eastern red buds are susceptible. A fungus spray can help . Or .. it's small enough to take the plant to a nursery ask for advice. Keep it separated….and cut off the defective leafs .

The roots looked great! Of all the trees I've repotted this year, I was very surprised on how their roots exploded.
Thank you, I will keep treating it with spray

Your welcome. 🪴

I am still having issues with these plants, and it seems to have gotten worse. The oldest leaves are just turning brown. I think it is a watering issue but I'm not sure

When a plant gets a fungus it's in the leaves that show exactly what it is. Spray every two weeks. How often has the tree been sprayed? Also remove damaged leaves . If it were over watering the stems would be less turgid . Keep in part sun to shade let dry out between watering. If you can take the plant to a county extension service they can help ID the fungal disease recommend treatments to put you mind at ease. It's a small plant and some don't always recover.

See pics and more info. https://ucanr.edu/blogs/blogco...

bumplbea said:When a plant gets a fungus it's in the leaves that show exactly what it is. Spray every two weeks. How often has the tree been sprayed? Also remove damaged leaves . If it were over watering the stems would be less turgid . Keep in part sun to shade let dry out between watering. If you can take the plant to a county extension service they can help ID the fungal disease recommend treatments to put you mind at ease. It's a small plant and some don't always recover.

See pics and more info. https://ucanr.edu/blogs/blogco...

I spray it whenever I think about it; sometimes it's every day, somtimes it's once a week. They look better now, the problem leaves were eventually just shed by the plant and it seems to be stable but I will keep an eye on it. Thank you

It also looks just like all the ones around here during the summer. It's pretty much the oldest leaves, around the edges, doesn't really spread much and then the leaf falls off. I seriously would ignore it or maybe give it some liquid all-purpose fertilizer and not stress. It's just what they do.