fungus

Hello all, Let’s play name the fungus, if you will please? I swear I’ve seen this in pictures on the internet before but it’s no tar spot or common black spot, it looks.... worse. It’s a Maple, Beni chidori. It appeared on random leaves, not localised or on new or old leaves. Tree is otherwise...

Hello! I'm adding pictures of one of my affected trees - I don't know what they have - In this case is an ilex serrata. We are in fall here, soil was very compact so I repotted without touching roots into a bigger pot and new lava rock. What do you think? Thanks!!

Hello all, I am having a slight issue with my juniper that I was hoping you kind people could help me get to the bottom of. The tree overall looks pretty healthy, nice color, new shoots, all good there. My problem is with the tips of some shoots and even some old growth. I'm aware of the...

Hi fellows. One of my quinces is losing its leaves, they get yellow with brown spots from night to day. As the others are ok and humidity is low overall, I guess it is a fungal issue. Should I try Daconil? Neem oil?

Hello! I live in Buenos Aires, Argentina. South hemi. I have a chinese elm I have air layered from a bigger tree 3 years ago, it was always going very well... but this summer it got a fungal issue, i threated it with Folicur once a week for 4 weeks, like I usually do with other decidous trees...

I dug this trident maple yesterday and found these white fungal(?) sheaths on many roots. When wet, it was thick and spongy and could be scratched away to reveal the outer portion of the root beneath. They appear similar to images at the below site, but this is the first time I’ve encountered...

Hi folks- I recently got my first bonsai as a gift from my gf, a ginseng ficus. After I first got it & repositioned it about a month ago, about 25% of the leaves turned yellow and fell off which I understand to be somewhat normal after relocating a tree. However, it's still continuing to lose...

Hi. Recently I bought japanese fertilizer cakes. I didn't put them on top of the soil, but deepened them into the soil. It took 2 weeks, in some pots they began to mold. It turns out that the whole batch of fertilizers is infected with a fungus or the soil itself has been infected? Should I get...

We've had mental weather here in Sweden lately, with the temperatures going from -2 to +25c.. Most of my garden seems very confused as to what season it is, and my bonsai trees have been hit the worst. I've been trying to rule out what could possibly be wrong with this juniper. Is this root rot...

If the answer is "it depends", then I really want to know why. My own experience in a hot country is: - If I don't mist and water properly, trees thrive anyway. - If I mist daily and water properly, sometimes some trees get fungal issues. Maybe unrelated, but one never knows until asking.

I know when growing from seed to use a well draining soil mix and to grow in a bright area to prevent damping off of seeds. What fungicides should I use as preventatives? Should they be soil or spray fungicides? Should I apply fungicides after or before seeds begin to sprout? Should I use powder...

I got this mugo pine in early summer and haven’t really touched it except for raising its level in the pot. I have noticed that some of it’s needles turn brown at the ends. I am guessing it is a fungus so I will start spraying with fungicides in spring along with my Japanese Black Pine, but does...

I was planning to treat one of my Japanese black pines with bonide infuse, (a systemic fungicide) to treat needle cast. I was also planning on using daconil and copper fungicide to treat it. I do not know if I should treat with bonide infuse, since it could harm mycorrhizae. Does anyone use...

I bought an “Ondae” cultivar Japanese Black Pine in February and repotted it in March. It seemed to be doing well, but over the summer, I have found what seems to be needle cast on its needles. Tips of some needles are turning brown at the tips and towards the ends, some needles are turning...

Hello all, I noticed something was wrong with my Jacqueline Hillier Elm this morning when watering. Some of it's leaves are extremely dark green and brittle. I would say about 30 percent of older leaves towards the interior seem to have this issue. I touched a few of them and they...

Hi all, Recently got this on an online purchase. Tree seems healthy but arrived with tiny speckles on the leaves.. is this due to fungus?? Not familiar with this issue new growth starts without it but as leaves darken speckles become visible. Thoughts? Thx

This is my first post, first bonsai. I have a ~5 year old Chinese Elm from Eastern Leaf. When I bought it last Spring, I almost immediately repotted from nursery soil to a 100% inorganic akadama/lava mix. The tree did very well last summer and only lost about half of its foliage into the winter...

Hello, I have a bonsai tree which over the past several months has developed orange fungus-looking bumps on it's roots. The soil has also eroded on one side of the tree where this condition is taking place, exposing some of the roots. It's spreading rather fast, and appeared before I even...

Greetings all (and specifically Vance). I am a novice and welcome your comments/advice. The following is an update on the Mugo I purchased approx. 2 years ago from a nursery in Ottawa, CA. Based on advice from Vance and others here (thanks), I cut off ~1/4 of the almost completely sand base and...