Gardening and Landscaping Stack Exchange
Gardening and Landscaping Stack Exchange

Questions tagged [diseases]

For questions related to plant diseases.

Plants can be infected by a number of diseases. These can be caused by micro-organisms (e.g. bacteria, fungi, viruses; and multi-cellular creatures such as nematodes).

Macroscopic creatures (e.g. mites and aphids) and water/nutrient problems (too little or too much) can also cause symptoms that can be confused with diseases.

Use this tag for all questions related to diseases - especially diagnosis, management, and cures. Please include pictures of the affected parts of the plants.

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What is this white mold infesting my tomato plants?

Some kind of white mold is infesting several of my plants, below is one of the worst infections of a tomato seedling. It is very aggressive, if I remove the top layer of soil it will come back in a single day. It has infected some basil seedlings as…
Bjarke Freund-Hansen
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Why are my cucumber leaves turning yellow?

My cucumber plant's leaves are turning yellow. Could it need nutrients already? It only germinated 24 days ago, but is my biggest plant already.
Jelle De Loecker
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The bark is falling off my tree - is it diseased or dead?

The bark is falling off my tree. Is the tree dead? Diseased? Will I have to have it removed? Please see the pics: Click on any photo for full size
Laxmidi
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How to get rid of the White fly

I noticed I got once again the white flies on my herbs and vegetables. I tried to get rid of it by planting Basil close to them, and it worked for some time but now they are back again. I have heard and tried vinegar mixed with water? This time the…
Valentina Droguett
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What are these white things on new leaves?

I have roselle planted. But I see these on the leaves. What are these? Edit: Added closeups
Aksh
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How to prevent rotten end of tomatoes

Possible Duplicate: What else besides calcium deficiency could be causing tomato blossom end rot? Each year my tomatoes develop a brown rotten area on the bottom of the fruit. I always add steer manure, sweet lime, bone meal, epsom salts, and…
RET
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Why do my Cherry tomatoes split as they ripen?

It doesn't matter what I do, my Cherry tomatoes always seem to have many of them crack when/as they ripen. I have tried everything - more sun, less sun, more water, less water, different varieties etc. It only seems to happen badly with Cherry…
user22542
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Basil: cold or disease?

A few days ago I put my basil outside. In a couple of days, the temperature fell considerably, and I think it got a shock, despite moving it back inside as soon as I could. I think this is the reason, however, it could also be a disease. Can you say…
Stefano Borini
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Tomato branches curling

What is the cause or cure to the branches curling on my tomato plants? Aside from the curling they are growing, flowering and starting to fruit. It is the beginning of our tomato season as it is spring here in Sydney, Australia. I have 3 tomato…
Valamas
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What is wrong with these pine trees?

There are a line of pine trees in my development, and two of them seem to have a disease. I was hoping someone could identify what is wrong with them. They seem to both have the same problem (part of the branches are dead and there is something…
AwesomeMarioFan
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What disease is causing yellow bumpy leaves to travel down my sugar baby watermelon plant?

I have a sugar baby watermelon plant. The leaves have a problem near the main stem coming out of the ground, and it's clearly traveling down each vine. It is yellowy brown and bumpy and covers the whole leaf. What's causing it?
C.Hill
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Succulent Disease Identification (kalanchoe beharensis)

Album of pictures Another album of updated pictures One leaf before being "washed" with a mild soap/water mixture Another leaf after being "washed" with a mild soap/water mixture I purchased this plant a little over a month ago, and all of a…
grill
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What is the powdery mildew and why are my cucumbers not growing beyond 1 inch?

I have a healthy cucumber plant to all appearances. There is some powdery mildew which I am trying to contain with a spray for that disease. However, I have lots of buds which turn into tiny cucumbers, but they never get beyond 1 inch long then…
Sue H.
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What are these white/yellowish spots on my mexican fence post cactus?

My mexican fence post cactus has developed some sort of white/yellowish fungus(?) on it. Anyone know what it is? I hope it's not a goner!!! Looking for some help to save this guy!
SistaSmurf24
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Get rid of pesticide resistant Spider Mites?

I regretfully come posting asking for advice on how to get rid of a very tenacious spider mite infestation in one room of my indoor plants. I have become convinced these pests have become pesticide resistant because they have shrugged off neem oil,…
mattb
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