Questions tagged [diseases]

For questions related to plant diseases.

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2
votes
3answers
106 views

Holes on my succulent leaves

Hi, my succulents have recently been getting holes in them and I have no idea what it is. Please help!!
2
votes
1answer
68 views

Bark is falling off on our trees. Could it be Dutch elm disease?

We live in New York. Bark is falling off several of our trees. Could it be Dutch elm disease? It’s falling off in slivers.
3
votes
1answer
130 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 ...
1
vote
1answer
55 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 ...
1
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2answers
32 views

Kumquat fruit drop: Always the same result, no matter what

I got different responses, often conflicting ones: It could have been from excess water as well as lack of water. While June drop may be associated with heat, even fruits which formed later in the ...
2
votes
3answers
77 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 ...
2
votes
0answers
55 views

White coating on bottom side of pepper leaves

I just noticed this white coating on the bottom side of a few leaves of my pepper plant. I can not wipe it off. Is this some kind of fungal disease or some pest? Edit: I made some more images using a ...
1
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1answer
26 views

why are the leaves so smooth?

first time growing avocado indoors.why does it look like there are almost no veins in the leaves. I don’t have any idea where to start because everything else about the plant looks ok.
0
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2answers
26 views

Is this one of the incurable Canna Indica viruses?

More higher resolution images are here: http://imgur.com/gallery/sD2T1qN
0
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1answer
15 views

White/brown patch on a young monstera leaf - what to do?

I was happy when I saw my monstera growing a new leaf, but recently I noticed a white/brown patch on it and I'm getting worried. What does the patch signify? How can I help the plant?
0
votes
1answer
21 views

Kumquat leaf diseases or some kind of stress

I've got a Fortunella Obovata tree's leaves turning brown so I'd like to know is this some kind of diseases which would require disposing the tree or something treatable due to nutrition deficiencies. ...
4
votes
2answers
502 views

White growth on young walnut tree - is it an illness?

What is this white growth on this young walnut tree? Is it a disease or a harmless fungus? If I remove one, a visible hole is left in the tree. Other nearby trees do not have this so far (there ...
3
votes
1answer
685 views

Is this spotting on my schefflera houseplant caused by alternaria?

I've had a medium-sized schefflera or 'umbrella' houseplant for about five years now, and it might have been as old when I first got it. Lately, I have noticed black spotting on some of its lower ...
1
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1answer
34 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?
1
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1answer
120 views

peperomia polybotrya (raindrop) rust / copper spots on leaves?

Our Peperomia Polybotrya has developed some rust/copper coloured spots and I can't figure out what they are. I've googled intensively over the past few weeks, but I'm coming up empty, so I figured I'd ...
1
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1answer
88 views

Can These Plants Be Saved?

I believe the more dead one is sage. How should I help it? Also the plant with brown ends on the stems is mint. Should I cut off the brown bits? I don't care about harvesting or eating them I mostly ...
2
votes
1answer
448 views

Are black spots on Areca Palm contagious to other flowers?

I read here that those black spots caused by either bacteria of fungus aren't bad for my Majesty/Areca palm, but are they bad for other flowers which will be next to the palm? Will they become ...
1
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1answer
30 views

what are these brown spots on my potato plant?

I have noticed brown spots on my potato plant but cannot figure out what it could be. Do you might have an idea?
1
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2answers
83 views

What are the diseases that affect Angelica?

I've never grown angelica, or seen anyone else growing it. What diseases should I look for when growing it? How do I cure the disease to make the plant healthy again?
0
votes
2answers
39 views

Getting rid of mealybugs in geranium/citronella?

I have a small citronella plant that used to look very leafy and green. All of a sudden, the plant started turning brown, and the leaves were dying. So I looked at it today, and found some white ...
2
votes
2answers
52 views

What to do about a flowering currant covered with white disease or fungus?

Does anyone know what this is and how to deal with it please (I am in the UK)? Are there any precautions I need to take if I just remove the whole shrub? It is a flowering currant. Thanks
2
votes
1answer
32 views

Gardening. Potted cucumber plants

My potted cucumber plants appear to have mosaic virus. How is an insect barrier created?
9
votes
2answers
6k views

What is happening to the leaves of my avocado?

I have an avocado plant in my outdoors balcony. It's been growing nicely, but there are small brown dots/holes in the leaves for some time now. I don't see anything in the underside of the leaves, and ...
1
vote
1answer
91 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. ...
3
votes
0answers
32 views

Avocado plant white resin/wax like substance on back of leaves. What could it be?

I planted an avocado plant from seed about 2,5 years ago. The plant seemed to grow well, but I moved it alot, due to unproper conditions (lighting, temperature). For the last year, though, it stayed ...
2
votes
1answer
58 views

What are these white things on new leaves?

I have roselle planted. But I see these on the leaves. What are these? Edit: Added closeups
0
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0answers
28 views

What's wrong with my ponytail palm

my neighbor moved across the country and gave me this palm along with a few other plants and starts. I really know absolutely nothing about them the condition that They are in now are the condition ...
1
vote
1answer
31 views

What is happening to my Dieffenbachia, and what can I do about it?

BACKGROUND I brought 2 similar plants, of this same Dieffenbachia (see attached photo): Both were brought from the same nursery Both were brought at the same time Both were placed in new (never been ...
2
votes
2answers
62 views

Sudden death of arborvitae’s

I planted about 10 arborvitae‘s probably five or six years ago. Some of them are nearly 8 feet tall. In the last month and a half, three of them appear to have died. Why so suddenly?
0
votes
3answers
41 views

Dealing with fungus and molds

I'm interested in ways to deal (remove) fungus from spaces used to germinate seeds. I noticed that hydrogen peroxide, isopropylacohol and baking soda. Are these just for fungus or mold too?
1
vote
1answer
21 views

Daphne Odora - Silvering leaves

Hi this Daphne odora is growing in a pot in well draining soil in a fairly well protected position, it's spring time. but it's leaves are silvering here are a couple of photo's: Does anyone have any ...
1
vote
1answer
33 views

Tomato Mosaic Virus

My tomato plants apparently had the tomato mosaic virus this year - and probably last year as well. This is according to my neighbor, who I asked because I've been asking everyone if they know what ...
0
votes
1answer
64 views

What is this white web-like, mold-like thing on the plant

what is this web-like, mold-like thing on the base of the watch chain succulent plant? I searched in google for plant "molds" --> I saw powdery mildew. I think this is not that. It's more similar to ...
0
votes
1answer
33 views

Can my chilli plant be saved?

I started observing some white patches on the soil and have been observing practically no growth on my plant. The leaves are also yellowing. I thought it could be root root so I thought of repotting. ...
0
votes
2answers
39 views

Can't bacteria enter the tree even after a proper prune cut?

I am now aware of the 3 cut method of pruning the tree to avoid damaging the bark. I am at the brink of loosing a tree because of bad pruning and not noticing that. Now this may sound a silly ...
1
vote
1answer
26 views

My over 23 year old Mango tree wilted and cracks on barks. Verticillium wilt or Dieback?

I have a quite old mango tree in my garden. It is been there before my birth and I'm 23 now. We cut and prune the tree (not all of it) whenever it gets too big never had issue but only this time ...
4
votes
1answer
455 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 ...
3
votes
0answers
13 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 ...
3
votes
0answers
78 views

What is wrong with my Hydrangeas

My hydrangeas were looking beautiful until a few weeks ago. Then I started noticing that some of their leaves had these gray powdery looing spots on them, their blooms started having brown spots and ...
1
vote
1answer
25 views

Are Echeverias better off in a garden than a pot?

I followed all the possible advices: 1 - Good drainage holes 2 - Fast-draining potting mix, be it 50/50 coco-perlite, added coarse tuffa or river sand, or just using pure Perlite 3 - Let it dry for ...
1
vote
2answers
50 views

Transparent/white goo on the back of lemon tree leafs

The tree has been outside during the summer, since a few weeks back I took it in. A few days back I noticed these strange things attached on the back of 20% of the leafs. What is it?
0
votes
1answer
33 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 ...
1
vote
1answer
55 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 ...
1
vote
1answer
65 views

Sansevieria disease

Anyone know what is happening to this sansevieria?
2
votes
1answer
53 views

My friend’s pepper plant has some odd leaf lesions

It looks like the leaves are being distorted by whatever these lesions are. Any ideas? Viral disease?
5
votes
1answer
306 views

When is the critical period for blossom end rot in zucchinis / courgettes?

It's nearing the end of the season for zucchinis for me, and some of my zucchinis are showing signs of blossom end rot. However, other fruit on the same plant are fine. Now BER is said to be caused by ...
2
votes
3answers
87 views

Why does this chili pod have spikes?

I got some hot pepper seeds off the internet earlier this year and managed to get a couple of plants to fruit. The two plant that I've kept were supposed to be scotch bonnets and lemon drop peppers. ...
1
vote
1answer
27 views

What is going on with my cactus. Someone said miners but idk

my night bLooming cactus has its leaves eaten like this. I don’t see a bug on it. Ive Sprayed it with water etc and researched online but just two people answered and they said miners. I don’t know if ...
0
votes
2answers
60 views

The growth on my cacti has changed, and it wierd

I asked a question about the growth on my cacti earlier in the summer, however it's just acting weird. I initially thought it was a cacti fruit because it originated from a flower I tried to cross ...
3
votes
2answers
50 views

Fine white fuzzy layer all over Ipomoea. What can it be?

I have noticed a fading on my Ipomoea leaves and a fine white fuzz around the leaves too. Can anyone help me identify the problem? They grow on may balcony, Have plenty of sunshine and have not been ...