Questions tagged [diseases]
For questions related to plant diseases.
825
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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 ...
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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 ...
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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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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 ...
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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 ...
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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.
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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 ...
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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?
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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 ...
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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 ...
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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 ...
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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 ...
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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 ...
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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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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.
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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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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 ...
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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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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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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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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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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.
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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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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 ...
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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. ...
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67
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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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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 ...
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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 ...
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261
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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 ...
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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?
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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 ...
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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 ...
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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 ...
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48
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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 ...
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White web or fungus like sutff under sugar maple tree bark - peeling bark
I started to notice some white web or soft fungus type stuff around crevasses of my maple tree's trunk bark. I didnt make much of it until I clipped off some of the bark, there was more of it, and ...
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What are these strange black lumps on basil plant?
I've recently noticed these lumps on the stems of my basil plant
The fall off fairly easily but I'm not sure what they are and there's not much online that I can find.
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What is wrong with my brandywine tomato?
Just when I told my husband I had a great year so far starting tomatoes indoors, I noticed my young brandywine tomato has some sort of disease and it's causing the leaves to have some brown spots and ...
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What's happening to this plant?
It is on a balcony sun exposed. This brown dots started to appear, any Idea on what it can be?
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Why are the leaves of my Japanese Sweet Potato gradually turning yellow?
The leaves of my Japanese Sweet Potato plant (satsumaimo, サツマイモ) are gradually turning yellow, from the bottom to the top of the plant and from outside in on each leaf. The first picture shows the ...
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What are these gray spots on my locoto pepper plant?
Over the past few days I've noticed these grey streaks appearing on some of the leaves of my pepper plant and was wondering if anyone had any insight.
As of now, it seems to be mostly leaves near the ...
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What are these scars on my fruit trees?
I planted a few fruit tree saplings, apples, pears, peaches, apricots, plums, cherries. Within one year of planting, all of them, and i mean all of them started having these cuts or scars on them, ...
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What causes a guava tree to have brown lines on leafes anddoesn't give flowers/fruits?
I'm helping a friend with a guava(strawberry guava) tree problem. In addition to what you see on the leafes, it doesn't give any fruit/flowers.
it's just finished the humid season. it grows in a pot ...
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142
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avocado leaf getting black spots near vein
~1.5 year old indoor avocado plant recently started getting these black spots near the central vein. It's only on the top face of the leaf and only one leaf is affected.
There seems to be no ...
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Banana plant has its youngest leaf dry while other ones seem fine
I have a banana plant for a couple of months already. It has grown a lot during this time so it seems to be a healthy plant but recently the youngest leaf has dried.
Here are two pictures of how it ...
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Oak Tree Disease
Several live oak trees in my neighborhood over the past years have become covered in these protruding black spots on the bark. When the trees have it for a long time, they look like the tree I posted ...
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What is causing tiny new growth to die?
I have a young Jalapeno and its new growth is dead looking. It has tiny leaves and its flowers are dead and brown. I looked using a jewelry loupe and could not see any pests.
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Live oak brown spots on leaves in south Florida
I am hoping someone might be able to identify the disease shown on these live oak tree leaves. Hoping it’s not oak wilt. If there’s a recommendation on treatment that would be great. Thanks!
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