Questions tagged [diseases]

For questions related to plant diseases.

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1answer
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82 views

Please identify cause of dead spots on my Malabar spinach

I noticed there are small spots on the plant, but they keep getting bigger and eventually turned brown, like dead spots on the leaf. How do I get rid of these? I've already cut all the affected leaves ...
7
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1answer
3k views

What is happening to our potato plants? (going black, wilting)

We have a row of 3 different heirloom potato varieties, 50 originally, of which we've lost about 15 to a problem we'd like to identify. The following photos show the start of the issue, through to a ...
4
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2answers
180 views

What are those brown / white spots on my cactus?

There are 3 of this same cactus sharing the pot. Only one of them is getting these spots. What could it be? Fungus? Sun burn? They are in my balcony, they don't get rain, and they get like 3-4 hours ...
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2answers
22 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 ...
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0answers
23 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 ...
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1answer
19 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 ...
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1answer
26 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 ...
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1answer
30 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 ...
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0answers
10 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 ...
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2answers
111 views

Not sure what is happening to tomato plant

Not sure what is happening to my tomato plant. Plants have been in a really sunny spot. We had been in a drought, but we’re consistently watering. Then the last few days it started raining pretty ...
3
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0answers
29 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?
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1answer
35 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, ...
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0answers
8 views

Orange blotches on my mango leaf

My mango leaves having the following condition: Example 1 Example 2 Example 3 The leaves start off with this grayish bluish blotches which turn into this bright orange. Is this due to some fungal ...
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1answer
26 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.
1
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1answer
109 views

Problems with monkey puzzle tree

I’m Anna. I live in England . I have big monkey puzzle tree in my garden and it looks like it’s dying. We moved to the house a year ago . Last year we had very dry summer and since then we noticed ...
5
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1answer
562 views

What is wrong with my Mango plant?

I planted a mango seed this spring. And it went good. But growth stagnated after a while and totally stopped. Then I noticed some bulgy excrescence on the top, with a very dark almost black color. I ...
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2answers
20 views

Black spots on Fatsia japonica

does anybody have an idea about these small black spots on a lower leave of Fatsia japonica?
18
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7answers
52k views

What is happening to my chilli plant? How can I help it?

Some white spots appeared recently on my Twilight chilli plant (indoors), on some leaves brown spots start appearing in the middle. First I thought - aphids, but it doesn't quite look like insects. Or ...
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0answers
21 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 ...
4
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0answers
35 views

How to get rid of the White fly

I noticed I got once again the white fly in 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 is back again. I heard trying vinegar ...
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3answers
643 views

Lilac tree disease

I have a pair of lilacs, very close together, which have been fine for ten years. This year they have hardly any leaves (just patches of them) and what appears to be a whiteish and partly yellowish ...
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2answers
129 views

What's causing dry crispy leaves on Vaccinium membranaceum?

I'm in the Willamette Valley in Oregon, USA, (USDA zone 8b) and I have a Vaccinium ovatum, Vaccinium parvifolium, and a Vaccinium membranaceum in a section of my garden. They're shaded up until noon ...
3
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1answer
208 views

Young mango tree leaves get blackish and fall off

I have planted a mango seed and it was growing fine until a few days ago I noticed that one of the leaves had started going blackish. When I touched it, it fell. Yesterday I noticed that another one ...
2
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1answer
65 views

What is the disease in my chilli plant where the leaves of only one plant is becoming yellow?

I have several chilli plants in my yard but out of these 10 plants only one plant is exhibiting this problem. These plants are almost 4 months old. Unable to find a match for the photos from any ...
2
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1answer
23 views

Pawpaw bark damage after first winter

Young pawpaw tree (planted last spring as a stripling, so first spring post planting) has damage to bark and trunk. What could have caused this? Is there anything I can do to help it? Tree is in a ...
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0answers
29 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 ...
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1answer
46 views

Are these potted mint plants healthy?

These are some mint plants (Mentha arvensis) that have been grown from grocery store edible mint stems planted in a 60~40 ratio of cocopeat-perlite-compost and garden soil. The new leaves around the ...
2
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2answers
42 views

What is the diagnosis and treatment of a 5 year old Blueberry plant?

Our five-year-old blueberry plant, that has always produced well is full of berries and all of a sudden has dying branches and leaves turning red. I’ve included picture. We did fail to prune it last ...
2
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1answer
62 views

Chilli plant leaves disease

My chilli plant leaves seem to get some white shiny spots on them and then go brown and die off. The pics don’t look like anything I’ve seen from googling; is it rescueable? Thanks! Malcolm
2
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1answer
18 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.
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0answers
29 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 ...
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1answer
36 views

Small brownish spots on succulents | how to cure?

What disease/fungi/insect is causing this and how can I get rid of it? thanks in advance!
16
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4answers
37k views

Sudden Outbreak of Yellow Leaves on Tomato (and Other) Plants

My mother was in a panic this morning. She called me over to help her with her garden because many of her tomato plants had suddenly developed yellow leaves, many of which (but not all) also have ...
6
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1answer
523 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 ...
4
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0answers
28 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 ...
2
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1answer
18 views

Fungus cross infection

My Dendrobium Nobile Apollon has fungus ... Is it possible that this fungus could infect other plants like my Hoyas?
0
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1answer
42 views

How to help seedlings recover from tip burn

I germinated some seeds and I had the seedlings under a two new 40w LED grow light for a few weeks. I'm used to keeping florescent lights very close to the plants, but apparently this LED light is ...
2
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1answer
40 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 ...
1
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1answer
17 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 ...
6
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1answer
123 views

Can rubber gloves spread plant diseases?

I use thin rubber gloves when gardening. It's autumn here in zone 6, and I'm in the process of pruning and pulling up spent perennials and all manner of wildflowers which have been growing since the ...
1
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1answer
36 views

What caused the roselle seedlings to emerge like this?

I had planted some roselle seeds in a seed tray with an old mix of cocopeat, perlite, vermiculite and compost. The seeds were soaked in water before planting for some time. Now after eight days or so ...
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0answers
7 views

Need help with identifying peace lily root disease

My peace lily started dying, it's leaves were turning yellow and then brown from past 2-3weeks. I speculated it to be a root rot. Today, I took out the plant from soil and along with root rot, I found ...
6
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3answers
28k views

How far apart do raspberries and blackberries need to be planted?

Most horticultural guides I've read recommend not planting blackberries and raspberries near each other because they will spread diseases between each other. How far apart do they need to be to ...
3
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3answers
207 views

Why does my orchid have spots on its leaves?

I have an orchid that has spots on two leaves, and no spot on the other leaves. Among these two leaves with spots, one (named "Leaf A") has more visible/pronounced/impressive spots than the other leaf ...
2
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0answers
22 views

Please tell me the disease/issue with my mint plant

These mint leaves are pale yellow-green. Please tell me what is wrong with them with all the discoloured appearance. Pot-12~14 inch Soil mix-Old vermicompost~vermiculite~perlite mixed with about 20 ...
3
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1answer
381 views

Pale green areas in new leaves of Draceana fragrans, disease?

Does anyone know whats wrong with my draceana? All the new leaves have those "pale green" areas, they have it already in the beginning. I´m familiar with the common pests and they are not the cause. ...
1
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1answer
88 views

What kind of tree is this, and is the white “powder” on some leaves mean it's diseased?

I live in southern California and moved into a new house a few months ago which had this tree planted in front of the house. When we moved in, it was basically bare, but over the past couple months ...
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1answer
48 views

(NW Indiana) Yellow pumpkin stems and leaves

Northwest Indiana. Pumpkins were planted at the end of May. I noticed within the last 2-3 weeks the stems on both plants started turning yellow and the skin started breaking open (for lack of a better ...
2
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1answer
247 views

Disease on Eggplant

My eggplant looks to be sick and its spreading to my other plants! I'm in Australia so its currently spring. Does anyone know what it is? and how should i treat it?

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