Questions tagged [diseases]
For questions related to plant diseases.
838
questions
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My bean plants are struggling, how can I help them?
I'm growing three different colored beans, one is white, one is yellow, and one is red. They were growing fine, but it wasn't until about 2 weeks ago that problems started to arise. Two of them ...
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22
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Why are my mango's leaves are getting brown and curling?
I started to grow a mango tree from seed 2 years ago in a pot. The mango tree is outside on my balcony when temperatures are above 15° celsius otherwise it stays inside where temperature is 20° ...
4
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0
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18
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help identifying fungi/virus on Agave americana
TL;DR I'm trying to identify a pathogen on my agave.
I have an Agave americana in my yard in New Orleans, LA. It has generally grown vigorously, although it sometimes struggles during wet + cloudy ...
2
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0
answers
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Red Apple Groundcover Dying
Have red apple ground cover (Aptenia cordifolia), usually very green and very hardy! However, over the past few days, it seems it has quickly been dying back. It seems to be in splotches. Is this ...
2
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0
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28
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Leaf Curling in Japanese Loquat
Why does the deformation/curling (shown by the red circles) happen for the leaves of my Japanese loquat?
It has been a few days since I bought this tree, and the young leaves on the crown have risen ...
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Black and white spots on my pepper plants
I can’t see any bugs and the spots don’t rub off. The leaves eventually become weak and fall off the plant.
Any diagnosis and treatment appreciated!
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28
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Is this some sort of disease?
I do not see that on all plants. But some plants have this near each leaf. Is this some disease?
(Red Amaranth)
2
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0
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101
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Brown Spots and Yellow Leaves on Hibiscus
I get brown spots that eventually turn my Hibiscus leaves yellow and they fall off. It doesn't kill the plant but I have to trim it down when this happens. What is this and what do I do about it? I ...
2
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1
answer
85
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Black spots on my ruby ficus elastica
Does anyone know what these black spots on my ficus are and how to treat? I had to put it out in the sun when my house was being painted, could it be sunburn? Or maybe a fungus?
3
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Avocado tree wilting indoors
My indoors avocado plants have been looking worse and worse over the past couple months, even though they are receiving plenty of sun (summer in Australia).
Their leaves have been drooping, becoming ...
3
votes
1
answer
107
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Is my fairy castle cactus infected with a fungus?
The cactus was a vibrant green when bought and has been slowly turning brown over time. It's only watered when the soil is dry, about 2-3 weeks apart. The soil drains quick. More or less water doesn't ...
3
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34
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Large white marks and curled up basil leaves
I’ve grown this plant from seed indoors under grow lights. Potting mix is ProMix organic. They looked great at first but then started developing these white marks and the leaves started curling up all ...
2
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1
answer
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Why are my indoor grown Loquat saplings, grown from seeds, getting wilted and blackened leaves and dying?
I would like to apologise for the fact that I am not a good or experienced gardener.
I had some loquat seeds and I thought I'd try to grow them, now they have sprouted and grown leaves I re-potted ...
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1
answer
55
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Are these apple saplings turning yellow due to autumn or to a virus
So these are 4 year old saplings. They didn’t loose leaves when I began growing them, I thinks it's due to being inside all the time. I just want to make sure, if they're losing leaves due to winter ...
2
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0
answers
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Purple blisters on my opuntia cactus, need advice
I've had my cactus for a couple years now and it's been doing fine up until a couple weeks ago. It started producing these strange purple blisters where the fuzz comes out. I've been searching ...
2
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1
answer
42
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Are these photinia's roots normal?
They've got an orangish colour, is it normal for this plant?
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1
answer
54
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What are the spots on my lilac bush?
I just had someone plant lilac bushes for me and this is what they look like.
They don’t seem healthy.
2
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1
answer
450
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What is this damage on my Anthurium leaf?
I've got this on a leaf on an Anthurium:
Is this a disease? Do I have to cut this leaf? If so where is the best? From the base or just the leaf? It is in the same situations from days, without any ...
4
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0
answers
106
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Strange growth on a pepper plant
I noticed a strange growth on a Capsicum chinense plant. Based on location I believe, it is is some sort of deformation of the flower bud (maybe fasciation).
It resembles broccoli florets. No other ...
2
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0
answers
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Is it healthy to consume pumpkin flowers with its vines diseased affected by Squash Bug?
Is it OK to eat flowers of Pumpkins Vines affected by Squash Bug? The vines are dying but not the flowers or Pumpkins, Missouri.
3
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Nyssa sylvatica - Identify possible disease?
Region is Pacific Northwest (Portland)
We have a 12 ft tall Nyssa Sylvatica that's showing significant brown leaf spotting that is worse the higher you go. Photos are below.
Last year, while still ...
2
votes
1
answer
53
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How can I treat powdery mildew
I have a grape vine in my garden and each summer it starts off fine but then Powdery mildew seems to kick in as the summer progresses. Is there a way I can treat it?
3
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1
answer
41
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Identifying issue with apple tree
I recently bought a potted apple tree from a store and honestly it didn’t look amazing there (and I kinda felt sorry for it).
I took it home and following advice of how online repotted it in a larger ...
2
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1
answer
40
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Disinfecting greenhouse
We have a small greenhouse/polytunnel (4×5×2,5 m) and this year is first season for growing tomatoes and peppers in it.
However, this year was challenging regarding weather and diseases. Each time ...
2
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0
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46
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What is this on my Crimson King Maple leaves that are drying up with sticky film on leaves
A week ago only some of the leaves on the Crimson King Maple became dried and some of the other leaves have a waxy or slimy film that is on them. The leaves are sticky looking with a film on the ...
3
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1
answer
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Bark on plum tree concern
I noticed earlier on our plum tree that the bark on one of the limbs is a very slight reddish colour and what look like cracks.
You can see the another tree limb on the left that looks fine
Any ideas ...
5
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1
answer
63
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What's wrong with my apple tree?
Some of the leaves on my apple tree are showing like this.
[
Should I be concerned?
Also, what's this white stuff? Is it Woolly Aphids?
Climate; Istanbul. Hot summers, cold winters. We've recently ...
3
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0
answers
22
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Diagnose illness in dying watermelon vines
It seemed to me that I had a nice health crop of water melon plants growing. Then I noticed the leafs developing brown spots and start to get brittle dry out, with some brown spots eventually turning ...
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59
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Watermelon Disease Identification
I've planted this watermelon 50 days ago, I'm in Zone 8 in Dallas, TX. I'm wondering what the disease that has afflicted the leaves is, and if I should harvest the fruit now and if it's still edible.
3
votes
1
answer
100
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Blueberry Plant is Sick or just Overwatered?
I'm a newbie and could use some help.
So I just got my first blueberry bushes and am very excited, but one of the bushes (Jubilee Southern Highbush) is showing some concerning signs. The leaves are ...
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1
answer
23
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Norfolk Island Pine
My Norfolk Island pine is dying, I normally give it 3/4 solo cup of water every two weeks, but it got over watered I believe (two weeks straight instead of skipping)
Please advise. Is there any hope ...
0
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0
answers
22
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White stuff on mango not leaves
Hello…My mangoes have this white cotton puffy substance on the fruit but not the leaves. The leaves are nice and healthy looking.It's a strange substance that has two appearances. One looks like tiny ...
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18
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Echiveria Spots Disease?
I got this echiveria a few months ago and its been doing good but ive noticed a few "spots" on it lately and im not sure if this is normal or is it infection, Fungus or disease? one time one ...
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0
answers
36
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Why are my tomato leaves yellowing?
I'm in Toronto Canada and noticed no fruit set as well as many lower leaves turning yellow. Is this a nitrogen issue? I also noticed an abundance of pillbugs near my plot too, some even eating the ...
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0
answers
35
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Black spots on gooseberry leaves
I have gooseberry/red currant plant (grafted).
A some point black spots appeared on gooseberry leaves. They appear overnight on more mature leaves. Red currant leaves does not seem to be affected in ...
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0
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44
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What is the disease of cucumber leaf?
I want to share some pictures of the cucumber leaf. I have no idea.
Several days ago, there were some white spots. I uses some soda power water. But now it is totally yellow.
3
votes
1
answer
192
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Clustered white spots on strawberry mint leaves
I woke up this morning to find a node of leaves on my strawberry mint plant covered in white spots.
I've noticed a few other leaves nearby having the same issue, though not as prominent.
Does anyone ...
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0
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25
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Symmetrical brown dots on camellia leaves
Help please. I’m located in the Pacific Northwest USA. I just noticed that much of the new growth on my (old) established camellia shrub has these odd brownish dots. Only 2-4 dots per leaf, all ...
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Brown/black spots on tomato plants - what can that be?
We have tomato plants where some of the leaves (maybe 20-50%) have
brown spots. The spots look brown to me, but look more black in the photo.
I'll try to add an image. The leaves that don't have spots ...
2
votes
1
answer
58
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What is this leaf disease on the Janet Blair?
I planted a Janet Blair (type of Azalea) last year and since that time it has not been doing well. New leaves are coming out but soon half the leaves have some discoloration. I don’t know what is it. ...
3
votes
2
answers
68
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What is eating my garden?
I’ve got a couple plants in my garden that have been decimated by… Something. I’m hoping someone can help me identify what that something might be.In doing a very limited amount of research, I ...
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Hydroponic nutrient solution filtration
I am looking to build a small-scale hydroponic farm; lettuce/tomatoes/etc, and am now looking into a filtration system for my re-circulating reservoir. I have previously run into pathogen issues ...
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0
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Cherry disease identification
Cherry Tree is Sick 😞
I have a cherry tree that was planted 3 years ago.
It is a hybrid of three different species (one branch is native, the two other are not).
The tree looked healthy and did grow ...
2
votes
0
answers
31
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Peach disease identification
Peach Tree is Sick 😞
My peach tree is suffering from curling leaves.
The issue started last year and persists.
This is a young tree and it only produced 3 fruits last season.
I suspected it's a ...
2
votes
1
answer
294
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Birch Tree; Section of branches have no Leaves
I have a group of 3 birch tree's in my backyard, Jacksonville, FL. Last year I noticed that there was a center section, on the entire group, that did not have leaves on the branches. I have River ...
3
votes
1
answer
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Gum excreting from mango fruits
I just found that some gum is excreting from the fruits of mango. Here are the pics. Could someone tell me what it is? How to cure it?
2
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0
answers
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Habanero leaves browning and dropping
I have had the pepper in question for over a year now, it was growing really well, flowered and started ripening fruits, however now it seems to be dropping all of the leaves. They first turn soft and ...
2
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0
answers
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How do I fix my palm tree?
My palm tree has some holes and odd texture at the bottom. Someone told me it could be rot or a disease. I am looking for some answers as to how to fix it. It could be drainage which I am fixing. Is ...
5
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1
answer
318
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Circular dead spots on Boxwood shrub - identification and treatment
I am trying to figure out why my shrubs are showing dead spots and, in some cases, complete sides of the shrubs are dying off.
Can anyone help me:
Identify what this shrub is
Why they are all showing ...
2
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0
answers
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white foam on mulberry, ants love it
What is this white foamy thing I see sometimes on leaves and sometimes on small branches on my mulberry tree. (Don't forget to read updates below pictures.)
Update:
I gather 3 of these foams, and ...