Questions tagged [diseases]

For questions related to plant diseases.

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Whats up with my hydrangea

Im located in south Jersey Soil is clay but was amended with leafcompost, micronutrients stuff and topped with 4" woodchips. Only watered it when planted and monitored the moister level before ...
Joseph Wit's user avatar
  • 1,166
2 votes
1 answer
71 views

My plant is sick, what can I do?

This plant used to be green, since a year ago it's mostly yellow (most but not all of the leave is yellow) and stopped growing - even shrinking a bit. I suppose it has a disease. But I don't even know ...
drake035's user avatar
  • 335
6 votes
1 answer
84 views

What is this disease attacking the leaves of most of my plants?

more than half of my plants (total about 100, from a wide variety of plant families, all on a large balcony) are affected stems, roots, flowers and fruit show weak growth but no direct sign of the ...
ekiwieu's user avatar
  • 63
3 votes
0 answers
49 views

What are the issues plaguing my lemon tree and how can I bring it back to glory?

Have just moved house and have a lemon tree that appears to be suffering from numerous issues. What exactly is causing the issues seen in the below pictures, and how can I effectively treat them? I've ...
lukeic's user avatar
  • 131
4 votes
0 answers
78 views

Why are leaves on my plant drying and have white spots?

I have a plant (I don't know what kind of a plant is it) which used to be in the hallway of the building I live in. I didn't really take good care of it and most of the leaves dried up and fell off. A ...
Hinko Pih Pih's user avatar
5 votes
0 answers
31 views

Will Grow bags prevent soil pathogens from seeping into the bag from underneath?

I have an organic raised garden bed for tomatoes. Unfortunately a soil pathogen/fungi has damaged several of my plants this year. I could not find an environmentally safe way to treat soil pathogens ...
kial's user avatar
  • 51
1 vote
2 answers
203 views

What are these spots on my begonias' leaves?

My begonias aren't doing so well. They've developed spots on the leaves and it seems to be getting worse. I think it's some kind of disease, but I can't find a close enough match online to be sure. ...
user42702's user avatar
1 vote
0 answers
61 views

What would cause cherry tree leaves to dry from middle outward?

I have a 3-year-old cherry tree which is losing its leaves early this year. They appear to be drying and wilting from the middle (large vein) outward. What would cause this? Notes: Located in ...
zwiebelspaetzle's user avatar
4 votes
1 answer
481 views

Why are my cucumbers deformed?

I'm growing a pickling variety of cucumber. Normally they grow in very predictable "pickle" shapes. A couple of weeks ago, I notice that most were oblong and sort of hooked. In the photo ...
emersonthis's user avatar
1 vote
0 answers
92 views

Immediately browned leaves on coral bark maple

Four months ago I transplanted two young maple trees, a coral bark and a Japanese, from nursery pots to larger pots. I went on vacation and the automatic irrigation did not trigger. Both scorched, ...
emsoff's user avatar
  • 556
2 votes
0 answers
1k views

Does my basil have fusarium wilt?

my basil has browning leaves and a dark stem and Im worried it has fusarium wilt! I only bottom water it every time it droops and keep it beside a semi sunny windowsill. It does live in a not so well ...
Misty's user avatar
  • 21
5 votes
2 answers
3k views

Marigolds, clovers, and other plants have leaves mottled with white

I noticed our marigolds all seem to have some sort of leaf-mottling, but since they seem otherwise healthy (perky, blooming), I wasn’t too worried about it. But I’m noticing the same thing has ...
Rae's user avatar
  • 151
3 votes
0 answers
530 views

Mango leaf disease

My mango plant has various symptoms so I'm not able to pinpoint the disease. Is it just a result of anthracnose or is it a lesser problem? I sprayed some Bonide copper fungicide. Is there a better ...
Christian's user avatar
  • 447
6 votes
0 answers
39 views

What are these spots with yellow halos on my cucumber leaves?

They've been growing for 3 months so I assume they're at the end of their lifespan- but I want to identify this. Is this a disease or just some sun beating down on it?
brandon's user avatar
  • 513
3 votes
0 answers
804 views

Why are cucumber leaves turning yellow and white and dying off?

My cucumber plants have leaves that are turning yellow and white and dying off. I've had trouble with a virus in the past, but this looks a little different. Any ideas?
Daanii's user avatar
  • 553
3 votes
0 answers
33 views

What could be causing these bands of discoloration on my grass leaves?

My lawn was replanted from seed last fall, and has been looking generally good this year, though the overall color seemed a bit lacking recently. Upon closer inspection, I found that throughout the ...
dphil's user avatar
  • 31
0 votes
0 answers
20 views

Two potatoes in container are bad -- are the remaining potatoes affected?

I'm growing potatoes in containers. I just turned out one container to harvest the potatoes. Two of the potatoes were gelatinous and foul, as in the photo: Update: these weren't the seed potatoes, ...
crmdgn's user avatar
  • 827
2 votes
3 answers
1k views

Half of a zucchini fruit is yellow. Is this a reason to worry?

So, one side is nice green with white dots as usual, but the other side (the side on the less blurry part of the picture) is yellow instead of green. Is this some disease? I've gotten normal looking ...
user avatar
1 vote
1 answer
33 views

How to treat lawn diseases (brown patch, leaf spot, melting) without fungicides?

Google tells me "stress your lawn", meaning cut the water for some time. But wouldn't that hurt it even more, given we are in mid summer? I live in Calgary, AB - Canada. Fungicides are a no-...
gto's user avatar
  • 43
4 votes
0 answers
163 views

Why is the top part of the stem on my umbrella tree turning soft and different colors? And the leaves have brown ish spots on the new leaves

Help! I got this umbrella plant just a little while ago and it did have aphids (I did get rid of them). After them, the plants condition has gotten worse! The upper part of the stem is extremely soft ...
Amaya Marshall's user avatar
3 votes
1 answer
92 views

Lemon Meyer - unidentified disease

my young Meyer lemon tree has been growing something I though was bark. However it is not bark but brown spots with tiny white dot in the middle. They come off easily as you can see some of them on my ...
deeet's user avatar
  • 31
8 votes
1 answer
111 views

Ring around the collar?

I have an English walnut that is approx. 5-6 years old. There is a White fungus growing in the collar from a branch I removed. Is it harmful or caused by moisture? The tree is 20 feet tall and is ...
Sue Will's user avatar
  • 106
2 votes
1 answer
1k views

Why the leaves of the Barbados cherry plant are turning yellow?

The leaves of my seven month old Barbados cherry plant are developing pale yellow spots, which then spread till covering the entire leaves. The spreading of the yellow spots to cover an entire leaf ...
joy's user avatar
  • 686
2 votes
1 answer
175 views

Lilac Bush - A parasite of some sort? How to treat?

This is related to this post, I'm having the same issue: spiny growths on lilac bush (Colorado) There is something growing from my Lilac Bush that isn't the Lilac itself. It grows directly out of the ...
Justin Wade's user avatar
4 votes
1 answer
709 views

What is causing the brown streaks and holes in my young cherry blossom tree's leaves (Ireland)?

My cherry blossom tree was just purchased in April, and it's about 2-3 years old. It gets decent sun for at least 4 hours a day on sunny days but not every day, and lots of rain (I live in Ireland). ...
Andrea's user avatar
  • 43
4 votes
0 answers
51 views

Weird spots on my cactus

My cactus has significantly grown over the past few weeks and iv noticed these weird spots on it, it’s spreading around it. Dose anyone know what it could be or how to treat it?
Louise Millar's user avatar
1 vote
2 answers
342 views

How do I tell the difference between fungus and natural coloration in zucchini?

I've read that white patches on zucchini can be natural, powdery mildew, or another fungus. How do I know which? 2 of my zuchinni have large patterns of white areas on all leaves older than about a ...
Matt Flamm's user avatar
3 votes
0 answers
135 views

Why are my raspberry floricanes dying?

I have a good size raspberry patch in my yard that was there when I bought my house, and for the first 2 years I lived here I got a ton of raspberries. Starting last year, early in the summer, the ...
Ken's user avatar
  • 31
1 vote
1 answer
183 views

What are these brown spots on my sweet peppers (fruit)?

This has just happened in the past two days. I accidentally smeared wet dirt on them while tending, but surely this isn't a result of that?
brandon's user avatar
  • 513
4 votes
2 answers
382 views

What are these light green spots on my tomatoes?

I saw this in nearly all of the old growth. In researching this I found that it could be eggs of a leaf-miner, or simply just sun damage. I wanted to confirm if this is something to worry about, and ...
ParthianShotgun's user avatar
3 votes
0 answers
39 views

Why is my Black Locust dropping spotted leaves?

I have a Black Locust tree that has been planted for 1 year. It has full sun and as of this Spring I have watered it every other evening for 20-30 minutes. It has grown significantly the last few ...
Holly Tonhofer's user avatar
1 vote
0 answers
80 views

Leyland Cypress dieback

Approx 3 years ago I planted a row of 13 Leyland Cypress as a screening hedge at the back of my garden (London, UK). Over the years the trees have been growing well and have approximately doubled in ...
Jboy's user avatar
  • 111
5 votes
1 answer
104 views

Cat Palm in the early stages of death?

I’m worried about my cat palm. I got it maybe 6 weeks ago. I repotted it within a few days and seemed to be ok. Its growing new fronds but I noticed a couple of leaves at the bottom went a bit yellow ...
Georgia's user avatar
  • 51
1 vote
1 answer
128 views

Sweet potato - wrinkled leaves

I'm getting some leaves wrinkled. Is there anything to worry about? Or it's still ok? Slips were wrinkled as well, directly growing from tubers, but now that effect becomes less visible on new young ...
user1209216's user avatar
3 votes
2 answers
398 views

What's killing my apricot tree?

bought my house a few month ago, the apricot tree in the garden seemed fine at first and I thought it would be ok because a lot of buds appeared early, but now it seems to be dying. Do you think it ...
Godefroy's user avatar
1 vote
0 answers
142 views

Deformed leaves on Buddha Hand citron

What citrus disease is this? I picked up the very last Buddha Hand Citron from the store, so I couldn’t choose a better looking plant. Its leaves have wavy contours and the inside is bubbly. I don’t ...
JoJo's user avatar
  • 3,414
5 votes
0 answers
47 views

What is ailing my tomato plants?

My tomato plants have suddenly developed a nasty case of something or other: What is it, and how, if at all, can I rescue my plants?
crmdgn's user avatar
  • 827
0 votes
1 answer
88 views

Parts of pepper leaf became watery in after a cold and wet day

It has been cold(50F) and rained quiet a bit today and yesterday. One of my pepper plant's leaf have become "watery". parts of the leaf is wet and soft to the touch and slightly transparent, ...
zforest20's user avatar
1 vote
1 answer
140 views

What is this growing in the soil of indoor plant?

What is the yellow thing protruding from the soil? Should I dig it out? Also there appears to be white mineral deposits at the top of the soil This is an indoor aloe vera plant in a pot.
selfishshrimp's user avatar
1 vote
0 answers
30 views

Did I damage my tomato blossoms by spraying them with neem oil?

I had aphids and spider mites so I bought a premixed neem oil and sprayed my tomato plans. I didn’t know to avoid the blossoms and now they’re starting to wither. Did I damage them? Will they bear ...
VB farmer's user avatar
1 vote
2 answers
1k views

Black spots on Fatsia japonica

does anybody have an idea about these small black spots on a lower leave of Fatsia japonica?
Teuz's user avatar
  • 53
1 vote
2 answers
82 views

Is this black spot on roselle leaf fungal?

I have had one leaf which had two of these black spots. Now this is the second one where I have one blackish spot (Pic 1). Is this due to fungi? It seems to be embedded in the leaf. Otherwise, in two ...
Wodin Tiw's user avatar
  • 647
3 votes
0 answers
69 views

What's happening to my Marigold plant?

I sowed seeds for Marigold (purchased from Home Depot) and used Miracle Pro potting mix. The seeds germinated quickly and my plant grew 6-8 inches. From past 10 days, I am seeing the peripheral leaves ...
Saudamini Raina's user avatar
2 votes
1 answer
32 views

White spots growing on shrub

I've recently noticed some white spots growing on the branches of the shrub in my garden. May I ask what they are and what should I do about them? Thank you in advance.
ukgardennewbie's user avatar
4 votes
0 answers
80 views

Is this image shows my strawberry plant have Leaf Scorch fungus infection?

I have brought new strawberry plants, they seem to have black dots even for green leaves. I can see a lot of dead leaves with these marks, is this a fungus infection? Based on my research is Leaf ...
Jithin Jose's user avatar
6 votes
1 answer
606 views

Does it make sense to spray a soccer field for ticks?

I work at a school in an area with a high incidence of tick-borne diseases (even the one that makes you allergic to red meat!) and some parents have asked the school to spray the grounds for ticks. I ...
That Idiot's user avatar
  • 7,029
6 votes
0 answers
37 views

Suspecting pear fireblight but not sure.Any help appreciated

We have several fruit trees in our garden but having fruiting problem only with a pear tree.It is maybe 8 years old, every year has fantastic blossom but after the flowers turn into tiny fruits they ...
Janko Bradvica's user avatar
2 votes
1 answer
211 views

Unexpected wilting and leaves curling in a serrano pepper plant

About 5 days ago, I noticed that one of my 5 serrano pepper plants that a planted in a 10l container started to wilt a bit with some leaves that started to curl. After searching on the internet, I ...
mickeey's user avatar
  • 23
1 vote
1 answer
172 views

Is large vertical crack on the trunk of a shrub a sign of disease or old-age, and can this be reversed?

I just noticed one of my shrubs in the garden has a huge, vertical crack spanning almost the entire length of the plant. This plant has no issues and had a lot of foliage in previous years. Is this ...
KubiK888's user avatar
  • 335
2 votes
1 answer
23 views

Fungus cross infection

My Dendrobium Nobile Apollon has fungus ... Is it possible that this fungus could infect other plants like my Hoyas?
Mysterious Challenger's user avatar

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