For questions about growing fungi or curing fungal diseases.

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2
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1answer
25 views

Choosing between Triticonazole and Tebuconazole for rose black spot

It seems that only two systemic fungicide are still on the UK market sold for rose black spots being Triticonazole (UK brand name: Fungus Clear Ultra - Scotts Company) and Tebuconazole (UK brand name: ...
5
votes
2answers
65 views

How can one prevent baby/recently sprouted plant disease?

When one desires to germinate seeds in the seedling tray, he/she has to keep a humid and warm environment. But this environment is also favored by fungus. Other than sterilizing the soil, how can one ...
14
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3answers
926 views

Is this heavy blue-green growth on my tree trunk and branches a form of lichen?

I have a tree with a fairly heavy growth across its trunk and branches; I suspect that it's a form of lichen but I'm not sure. Is this something that will negatively affect the growth or health of ...
5
votes
2answers
70 views

Is powdery mildew spreading through my garden?

I noticed this white fungus a few weeks ago on some flowers in my garden which I ignored. But now it's appearing on my zucchini leaves. I was under the impression the fungi are plant specific, but ...
7
votes
1answer
70 views

What is this white crust forming on my cactus during the growing months?

I live in the UK and have a Trichocereus bridgesii/Echinopsis lageniformis "monstrose" cactus that I bought from a garden centre 3 years ago. Every year in early summer several new stems grow from ...
8
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1answer
56 views

What is this white growth on my euphorbia stenoclada (spiky succulent)?

I picked up this plant from a plant shop in Phoenix. This white scaly stuff seems to be spreading. I had a second plant just like this that had much more growth on it and it eventually died. I'm ...
6
votes
1answer
34 views

How many times do Fungus Gnats lay eggs?

If they lay eggs only once, this fact could help in eradicating them. If one has an extra pot of soil without a plant in it and waters this one day before watering the plants, then this pot may be ...
8
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1answer
74 views

Is this powdery mildew on my tomato?

Just noticed this on my store bought plant (not grown from seed). It's now fruiting, and I don't see any white spots on the leaves. Update: 25 Feb 2016 with close up of the stems and an more ...
4
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0answers
49 views

What is this tan-coloured cup-shaped mushroom found in northwestern UK? [duplicate]

I found this tan-coloured cup-shaped mushroom growing in my back garden on the concrete behind the bin. I'm in the northwestern UK and it's been very wet here recently. What is this mushroom? Is ...
3
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2answers
38 views

How to avoid fungus in a rainy season?

Last summer I decided to grow a tomato plant but I didn't know how to take care of it properly. After 2 months, it had caught early blight fungus. Since I am an amateur gardener, it took me a while to ...
3
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1answer
80 views

What is this extremely large brown fungus with white edges?

This is a huge fungus specimen I found along the Obsidian Trail near Bend, Oregon. I come across this type of fungus all the time in the Western Cascades mountain area, but this is by far the largest ...
10
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1answer
240 views

What is this 'bleeding' mushroom?

I photographed this weird looking fungus growing out of an open cut in a tree (not sure what type of tree it was) on my parent's property last weekend in central Texas after some heavy rain. The ...
7
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1answer
101 views

What are those orange things growing on my soil?

After two uncommonly hot & humid days in Southern California (weather is usually mild and dry), I noticed these orange things growing on my soil. Wondering what those are (see 2nd and 3rd picture ...
2
votes
1answer
66 views

Identifying brown spots with Jade and lemon tree

I am trying to grow a lemon tree from seed and after circa 1 month tree is almost 5cm tall. However, this weekend it rained roughly and i checked my plants. I found out that my lemon tree has ...
4
votes
1answer
74 views

Does mold on a seed always mean the death of that seed?

I recently germinated some coffee beans (soaked in water until a root appeared), and planted them in sterilized soil. I only lightly covered them in soil (based on this answer), so the tops of the ...
2
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1answer
25 views

How do you use potassium bicarbonate to control powdery mildew?

This post describes using potassium bicarbonate to control powdery mildew, but doesn't give any more info. So I'm looking for the following: Efficacy? Mixing rate? Application rate? Application ...
5
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3answers
110 views

Spots & holes appearing on rocket leaves

Does anyone know what these spots & holes are that appeared all over my otherwise happy rocket crop recently? I'm not sure if it's related, but there has been a lot of rainfall in my area ...
7
votes
1answer
118 views

Is this fig tree disease or just malnourished?

My folks in Berkeley, CA (San Francisco Bay Area) showed me their young fig tree the other day to see if I could figure out what was wrong with it, but I wasn't certain. I searched here (during title ...
2
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1answer
123 views

What fungus is this?

I've got several patches of this fungus growing in my mulch. It grows in roughly a circular patch, and produces these growths above the surface. The effected area binds together into a disk, and ...
4
votes
1answer
126 views

What is causing the brown-black spots on my apricots?

I've recently bought a house in the Auvergne region of France (South central) which is about 30 years old and that has the good fortune to have several mature fruit trees in the garden (cherry, apple, ...
7
votes
2answers
492 views

What is this (fungus?) on my fruit trees, and should I treat it?

I have several fruit trees (Apple, Cherry, and Peach) that all have an identical growth on the bark. It looks like a fungus to me, but I'm uncertain of the exact identification and what to use to ...
5
votes
1answer
62 views

What methods can be used to apply an antifungal to the interior of a tree?

Diseases such as the Blue Stain Fungus infect trees from the inside out due to inoculation by host insects. Are there any effective/standard methods for applying antifungal compounds to infected ...
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3answers
106 views

White spots growing on small tree in UK garden

I've just noticed these white growths on a tree in my garden (UK). Does anybody know what it is, what I should do about it? I believe the tree us a Salix Integra Thanks for your help EDIT: ...
1
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1answer
77 views

How to protect my apple tree from this disease?

So here is a picture of what I am facing Is this a sign of heart rot? What should I do? It seems to be confined to this one branch (no apples on that branch at all).
8
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2answers
132 views

Is my mint plant dying or diseased?

About a week ago I decided to propagate a healthy stalk of mint that I had bought from the grocery store. The roots appear to be healthy and full, but two of the leaves appear to be abnormal. One of ...
3
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2answers
409 views

How to prevent fungus on soil in self watering pots?

Below is a picture of one of my lemon trees, where the soil is covered with some sort of fungus. When I remove it, it comes back in 2-3 days. I am suspecting the problem is, that lemon trees can't be ...
5
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2answers
360 views

Black spots, curling leaves on potatoes, help identify problem

First, some relevant information: I am growing Yukon Gold potatoes. I am in hardiness zone 6b. The weather over the last month has been dryer than normal for the area I am in (Northeastern US). I ...
3
votes
1answer
236 views

What is this fungus that looks like a brain coral?

It looks like a brain coral. It is about a foot in diameter. It is Dry to the touch but still a bit soft. I live in Prince Edward Island in Canada.
3
votes
1answer
230 views

What plants grow in my bathroom? ☣

Today I investigated threads hanging from the ceiling in my bathroom, each ca. 5cm long. They started appearing in the weeks after a recent water damage in an apartment above. At first I thought they ...
3
votes
1answer
125 views

Will black knot fungus harbor in the roots of a recently cut down tree and infect another tree planted in its place?

I purchased a house last November with a beautiful tree in the front yard. I don't know what breed it was, but I believe that it might have been a type of plum tree. (see photo at bottom) ...
2
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1answer
575 views

What is wrong with this tomato plant with yellow and black spotted leaves? [picture]

What is wrong with this tomato plant? The yellow with black spots has been spreading through the plant. I am hoping someone knows exactly what this is and how I can treat it or prevent it.
2
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1answer
27 views

What kinds of pathogenic plant mildew are there, besides powdery & downy?

Are there any other kinds of mildew that affect garden plants besides powdery mildew and downy mildew? If so, what are they?
3
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1answer
177 views

What is causing the weird bubbles on my pepper seedling's stem?

Any recommendations you have would be appreciated. I'm assuming this is bad and will kill the plant? :( The pepper seedlings have been indoors their entire lives (a few weeks). Not all of them have ...
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0answers
64 views

What are the white specks on my Strelitzia's leaves? [closed]

I have a white fungus on my Strelitzia. It started as little specks on the leaves and I would like to know what it is, what caused it and what will get rid of it.
3
votes
3answers
251 views

How to completely rid my potting soil/container of fungi which seems to continually attack my plants

So, after so many dead plant and ruts, I have come to realize that for some reason, my plants seem to contract some fungal issue most every week. I am not exactly sure why but I have had to pluck up ...
4
votes
1answer
121 views

Should I remove brown, cap-shaped Birch Polypore mushrooms from my tree?

I learned from this question that my birch tree is infested with Birch Polypore mushrooms. For two reasons, I'm wondering if I should remove them. First, even though they grow because the tree is ...
2
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1answer
87 views

What is this mold/fungus? [duplicate]

Is it harmful? What should I do about it? It was undoubtedly caused by the excess water on the surface from the drippers. Those are now off.
11
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1answer
772 views

What are these brown, cap-shaped mushrooms on my birch tree?

I live in Massachusetts and have several birch trees in my yard. One of them has brown, cap-shaped mushrooms growing in groups up and down the trunk. As you can see, the tree has a big crack in the ...
2
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2answers
358 views

Night-Blooming Jasmine plant continues to wilt even after treating with baking soda-water spray

I recently purchased some night-blooming jasmine plants. After a week the plants are wilting. I transferred them to new pots with different soil but no improvement noticed. I also sprayed numerous ...
3
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2answers
500 views

How do I treat gray fuzz on the soil around my Peace Lily plant?

I purchased a Peace Lily, but I didn't have a chance to repot it yet. However at the beginning of the week I saw some gray fuzz and and also mites and sprayed it with Bayer Insect Disease and Mite ...
5
votes
1answer
88 views

Is this powdery mildew?

I have a bunch of these flowers - I don't know their names, but they're planted all around Israel alongside traffic circles and in public places. They're very hardy, but just recently I noticed this ...
6
votes
1answer
201 views

How can I control mint rust?

Sharing knowledge here: Since I live in the San Francisco Fog Belt, I suffer from a variety of soil-borne funguses, including mint rust. In fact, mint rust is so severe that in the past I've had to ...
4
votes
1answer
360 views

What are these mushrooms growing in the mulch around my orange tree

I have 2 or 3 types of mushrooms growing in the mulch around my orange tree near Houston, Texas (UDSA Zone 9a). What are they? The the last picture is actually 3 clustered, I haven't pulled it up yet ...
4
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3answers
177 views

What are all the methods to control powdery mildew?

This particular disease is totally vexing! I admit, I love cramming plants together, especially in a garden. I hate bare soil. I do prune for aeration. I do use free water to wash off leaves early ...
3
votes
2answers
1k views

What is this yellow mold or fungus in my container?

I found this yellow looking patch underneath the branches of my rosemary plant. I did not see it near either of the other 2 plants in the container. I dug the yellow stuff up, it seemed surface level, ...
3
votes
1answer
336 views

What is this fungus in my indoor snake plant's pot, and is it harmful?

I've had a snake plant growing indoors for about a year. Twice now in the last month I've had to remove some fungus that sprouted over the surface. The planter is located next to a patio door, which ...
2
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1answer
147 views

What kind of mushrooms are these?

I've noticed these mushrooms growing in my backyard today. They are likely thriving on dead grass that my lawnmower has been leaving behind. Can anyone identify them? I am located in the Houston, ...
3
votes
1answer
163 views

A fungus was growing before my eyes when I was weeding. What was it?

I was pulling out some weeds and must have touched something, because all of a sudden something was coming out of the ground. I thought it was a snake, but then it became like a white and black ...
5
votes
2answers
717 views

How do I get rid of worm-like trails all over my Senetti plants' leaves?

I have had a Senetti (more info) for about 18 months, and last year it was attacked by aphids. Initially the leaves had a worm like discolouration, as if something was attacking or eating them. Are ...
3
votes
1answer
713 views

Identification of fungus like fuzz on apple tree

This is an apple tree in western Germany that recently began to show some white fuzz on a couple of snags on the tree. Can you identify this by the shown picture? Does it any harm, shall I take any ...