Questions tagged [diseases]

For questions related to plant diseases.

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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 ...
Reihani's user avatar
  • 121
1 vote
0 answers
8 views

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!
Shellehz's user avatar
1 vote
0 answers
27 views

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)
shantanuo's user avatar
  • 121
2 votes
0 answers
39 views

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 ...
Don's user avatar
  • 21
2 votes
1 answer
52 views

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?
Alice's user avatar
  • 21
3 votes
0 answers
69 views

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 ...
Clement C.'s user avatar
3 votes
1 answer
79 views

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 ...
Jugo's user avatar
  • 31
3 votes
0 answers
32 views

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 ...
Seb's user avatar
  • 31
2 votes
1 answer
60 views

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 ...
Plasman's user avatar
  • 123
1 vote
1 answer
54 views

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 ...
Nikolai Evans's user avatar
2 votes
0 answers
18 views

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 ...
Nora Tiger's user avatar
2 votes
1 answer
39 views

Are these photinia's roots normal?

They've got an orangish colour, is it normal for this plant?
will's user avatar
  • 21
1 vote
1 answer
52 views

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.
Jamie Stephens's user avatar
2 votes
1 answer
369 views

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 ...
Felice Pollano's user avatar
4 votes
0 answers
105 views

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 ...
user37509's user avatar
2 votes
0 answers
10 views

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.
Carolyn Williams's user avatar
3 votes
0 answers
24 views

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 ...
Jim Garrison's user avatar
2 votes
1 answer
53 views

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?
Dave Hall's user avatar
3 votes
1 answer
41 views

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 ...
David Burford's user avatar
2 votes
1 answer
39 views

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 ...
False Identity's user avatar
2 votes
0 answers
46 views

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 ...
Sylvia's user avatar
  • 21
3 votes
1 answer
109 views

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 ...
Mert's user avatar
  • 125
5 votes
1 answer
59 views

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 ...
Mert's user avatar
  • 125
3 votes
0 answers
21 views

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 ...
vegfarm-edward's user avatar
0 votes
0 answers
54 views

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.
brandon's user avatar
  • 513
3 votes
1 answer
85 views

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 ...
Matt Buckley's user avatar
1 vote
1 answer
22 views

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 ...
Michelle Mullins's user avatar
0 votes
0 answers
21 views

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 ...
Scott Hellner's user avatar
0 votes
0 answers
17 views

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 ...
Twurti's user avatar
  • 141
0 votes
0 answers
36 views

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 ...
ParthianShotgun's user avatar
0 votes
0 answers
33 views

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 ...
Michał Pająk's user avatar
1 vote
0 answers
36 views

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.
Love's user avatar
  • 377
3 votes
1 answer
184 views

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 ...
ieatdirt's user avatar
1 vote
0 answers
25 views

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 ...
a-flying-trout's user avatar
1 vote
0 answers
26 views

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 ...
Harry's user avatar
  • 11
2 votes
1 answer
58 views

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. ...
JStorage's user avatar
  • 7,914
3 votes
2 answers
68 views

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 ...
L.B.'s user avatar
  • 153
0 votes
0 answers
13 views

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 ...
drew's user avatar
  • 1
1 vote
0 answers
42 views

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 ...
Igor Soloydenko's user avatar
2 votes
0 answers
30 views

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 ...
Igor Soloydenko's user avatar
2 votes
1 answer
282 views

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 ...
Don G's user avatar
  • 21
3 votes
1 answer
30 views

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?
coure2011's user avatar
  • 151
2 votes
0 answers
32 views

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 ...
Haraja's user avatar
  • 21
2 votes
0 answers
25 views

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 ...
Bridgett I's user avatar
5 votes
1 answer
269 views

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 ...
Christopher Aliotta's user avatar
2 votes
0 answers
48 views

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 ...
EresDev's user avatar
  • 487
2 votes
0 answers
81 views

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 ...
Sky Scraper's user avatar
1 vote
1 answer
84 views

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.
Zach's user avatar
  • 11
1 vote
0 answers
34 views

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 ...
Kauana's user avatar
  • 11
3 votes
0 answers
35 views

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?
Felice Pollano's user avatar

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