Questions tagged [diseases]

For questions related to plant diseases.

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11 views

7 years old Rose shrub giving shriveled up leaves and flowers

I live in South India ,we shifted into our new house 7 years ago and planted this dark pink rose soon after from a nursery .There were 2 of them, but one of them died soon after planting, from shock I ...
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1answer
28 views

Mandarin tree with yellow leaves and black spots (potted)

This grafted 'imperial' mandarin tree was planted in this pot over a year ago and is not healthy. Other plants at the store actually had fruit on them when I purchased this but it has never fruited. ...
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1answer
41 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
46 views

Is this green scale?

I have a small orange tree, and for the last few days the leaves are getting sticky and some green bumps and small white dots appeared in the trunk and leaves. From my google search it looks like ...
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1answer
17 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 ...
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1answer
2k 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 ...
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0answers
14 views

Browning at base of my cactus

I have had this cactus for a while now (about 4 or 5 years) and recently noticed browning near the base. The spines at the bottom are also a different color and pressed closer to the body of the ...
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0answers
28 views

Black mold on top of soil [closed]

2 days after pulling hydrogen-peroxide around the stem of a plant to possibly kill root rot. After that, a dark black mold-looking substance formed around the area where the powder hydrogen-peroxide ...
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0answers
22 views

Please help! Something bad is happening to my Monstrea Deliciosa

I have an urgent situation with my Monstrea Deliciosa. Yellowish stains appeared on the leaves last night. I watch the plant every day and I am sure they were not there yesterday. About half of the ...
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1answer
1k views

Hibiscus buds turning brown before opening

My Hibiscus is loaded with buds, however they turn dark brown and never open. The leaves did have some signs of disease but we have sprayed the plant and it is looking better, however the buds are ...
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0answers
13 views

Olive tree leaves are turning brown but stays on the branches

We transplanted a mature olive tree way back March and it's been adjusting well on the new location. But starting mid of July, at the peak of summer here in Qatar, the leaves of 1 big branch started ...
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0answers
14 views

Which disease could be turning the leaves on my tomato plants BLUE?

The leaves are very dry (though the plants were watered regularly and consistenly), have this bluish tint and those brown spots. Googled, but found nothing, which is weird. What could this be?
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23 views

Identifying plague affecting chrysalidocarpus lutescens

Here a close picture of what it is attacking this poor plant: I tried to spot movement among the white spots but there is none so my first suspect is some kind of fungi... I applied some polyvalent ...
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1answer
18 views

Black spots with white ring around them on Zinnia leaves

We have grown Zinnias in our garden since 3-4 years, In South India . The initial batches were very healthy and robust ,with stunning flowers. but since the last 1 year or so I have noticed that the ...
4
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1answer
27 views

What caused the leaf discoloration in my Kaffir lime?

The leaves of my kaffir lime plant have the grainy discoloration which looks like a disease. I assume normal leaves would be plain dark green. I didn't see insects or aphids living or staying in the ...
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1answer
40 views

Dendrobium with black spots on the leaves

There are these black spots on almost every leaf of our Dendrobium (?). It has flowered once but has kind of gone into a resting phase ever since, I guess that is normal (please correct me if it's not)...
5
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1answer
114 views

Will mulching be used as a breeding ground by harmful insects and/or bacteria?

I have seen that after 2-3 weeks after applying the mulch of rice hull one of the eggplants died. It firstly started with drooping unexpectedly. I did rule out over or under watering, as schedule and ...
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1answer
33 views

Dark stains on my english ivy. What am I doing wrong?

I have the following problem: Some leaves of my English Ivy became a little bit lifeless and droopy. On some leaves dark stains have appeared (I've marked them with red circles on the photo). Is my ...
0
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1answer
72 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 ...
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0answers
21 views

Can anyone help me identify the problem with my Areca Palm

I got this plant some 2 months ago from a local nursery and recently I noticed dark brown and yellow spots and now It started dying as you can see int the second image. I am watering it when the upper ...
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1answer
65 views

What are these white fuzzy growths on the soil of my lawn?

This morning, at about 11am, I went outside and found white fuzzy patches growing on the exposed soil of my lawn in a shady spot (in north-west England). It does not appear to be on the grass itself. ...
4
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3answers
58 views

What is damaging my tree Aloe?

I've had a Aloe plant for many years, mostly indoors. I finally repotted it a couple of months ago and split most of the pups off. All of the plants seem to have some sort of disease since then, ...
3
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1answer
246 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. ...
4
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2answers
125 views

Lilac Tree Branches Suddenly Dying

I have a Japanese Lilac Tree that was fine 2 weeks ago now there is 2 dead branches and 1 that is starting to die. They are not isolated and are random, with the first near the base of the canopy one ...
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0answers
44 views

What are these orange spots on my Dracaena Fragrans?

Sorry for the long question, feel free to just go off of the pictures! Background info.: I've had him for about 10 months. He gets bright indirect light in a SW window, watered with rain or de-...
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1answer
17 views
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1answer
81 views

Should I take precautious measures?

Noticed these fuzzy little balls clumped together in my pot. Its not a root. The other holes have very very very small white dots in the soil almost like little tiny specs of mold or eggs. Should it ...
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1answer
315 views

Pinus sylvestris yellowing problem

I'm pretty new to gardening and I recently (~2 weeks ago) got a Pinus sylvestris 'Fastigiata' plant and I noticed that some needles started to yellow. Here are a few pics:- The yellowing is mostly on ...
3
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1answer
90 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 ...
3
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1answer
47 views

Why are my daisy flowers dying? :((

Ive got Osteospermum (African Daisy), however I cant figure out why the flowers are getting their petals chopped and are mostly dying, The plant seems healthy and I cant see any insects or bugs around....
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1answer
28 views

How to cut calculated height with trimmer

I recently redid our lawn and it was beautiful grown turf (thanks to @bamboo) until the mice/rat (we can’t figure out what is that)next door ruined it and tried to dig places. Now from book of ...
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2answers
428 views

White stuff in citronella plant?

What is this white stuff in citronella plant and how can I remove it? It looks like a type of insect. Both of my citronella plants have that. Is it contagious? I started spraying it today with soap ...
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1answer
37 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
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1answer
652 views

Is my red oak tree dead? Only suckers growing:(

I need help! I got this tree approximately two years ago May 2017 to be exact and it was fluffy lots of leaves!! However, this year it did not grow any new leaves only suckers, can anyone please give ...
8
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2answers
1k views

Brown spots around the veins on a hot pepper plant's leaves

I noticed this on some on my Carolina Reaper plants. A lot of the leaves have this kind of spots surrounding the midrib and the veins. The plants grow indoors in 5l pots but I kept them in the garden ...
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0answers
8 views

Dying Jacaranda

I posted a few weeks back asking you guys why there was a deposit on my Jacaranda leaf. I didn’t got an answer but I found out online it could have something to do with my water and that it was ...
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2answers
89 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 watered. Then the last few days it started raining pretty heavy ...
23
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2answers
11k views

What is this green-ish thing inside the orange?

So, inside this orange there is this "alien" thing. Before I want to say that this is GMO, I need an reasonable explanation about this. What is this thing?
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1answer
73 views

What kind of disease is this, which is ruining my crop

I have grown castor in 5 acres, Castor is not traditionally grown in our area, but in the last two years my father has been growing this crop, because its price is high in the market. Last year's ...
4
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2answers
77 views

Diagnosing white fuzz on kale. Is this powdery mildew?

I think I'm dealing with powdery mildew, but I want to confirm that diagnosis. Context: I'm in Portland, OR. I've got several raised beds with a couple kinds of kale, broccoli, brussels sprouts, some ...
3
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1answer
234 views

Young Mango Tree Dying

Could anyone tell me how to save this tree? I am in planting zone 9b, so I know it is not the climate. When I had it in a pot outside and neglected to water it, the leaves turned brown too. I started ...
5
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3answers
257 views

Colocasia esculenta leaves drying

I have a few colocasia tubers planted since 2 months in a cocopeat perlite vermiculite compost 2:1:1:2 potting mix. Its leaves dry up when they reach a medium size after having a crispy bit of edge ...
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0answers
26 views

Is my orchid diseased?

I bought a pair of Vanda orchids online. One of them looks fine and healthy but the other one had black bruising on the leaves more than halfway up the plant. The articles I read.on the net suggest ...
3
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3answers
42 views

Scales/disease on tree?

I have this large tree in my back yard that has about 20% dead branches. The tree is very tall, probably 40+ feet. Most of the branches have this scale on them, and many of the leaves have brown spots....
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1answer
30 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 ...
4
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0answers
35 views

What's wrong with my fairy castle cactus?

My cactus used to be really thick and dark green but now it's so much skinnier and starting to shrivel up. Some of the arms are turning a dusty kind of brown and they're all leaning away from the stem ...
4
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2answers
9k views

Monstera Deliciosa plant with brown crud on the leaves

I have a pot plant with Swiss cheese kind of foliage that has got some problem possibly some sort of parasite or fungal infection, I have no idea. It's like red-brown rust that brushes off fairly ...
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0answers
15 views

What’s happening to my Jacaranda

Recently my jacaranda leaf are starting to appear lazy and heavy. I’ve notice some deposit on the leaf, what is it? Should I be worried?
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0answers
21 views

What are these gall like growths on my spuds?

I noticed a volunteer potato plant in the garden a month or so ago which I thought was cool. It's just now at the tail end of winter in the southern hemisphere. Today I noticed that it had gall like ...
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0answers
20 views

Single large brown spot on Dracaena Dorado

I have been giving my dracaena dorado some fertilizer this year, on and off, maybe twice a month or less since March. I let it dry out between watering. The leaf tips were turning brown so I moved it ...

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