Questions tagged [diseases]

For questions related to plant diseases.

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0
votes
1answer
173 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 ...
2
votes
1answer
75 views

Sunflower leaves wilting and yellowing

Good day! I would like to ask for some help to determine what I am doing wrong in growing my sunflower. The sunflower was started from seed about 3 weeks ago and now it has grown a few sets of true ...
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2answers
97 views

What are those white spots? Are they mould & harmful?

I have an indoor plant located at the windows of my kitchen. I water it every 2-3 days with rice water and the plant has been growing well. Recently I spotted some white spot at the soil of the ...
3
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1answer
128 views

Sansevieria disease

Anyone know what is happening to this sansevieria?
5
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1answer
562 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
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0answers
66 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
29 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.
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2answers
147 views

Is this one of the incurable Canna Indica viruses?

More higher resolution images are here: http://imgur.com/gallery/sD2T1qN
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1answer
265 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?
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1answer
42 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. ...
3
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1answer
1k 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 ...
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1answer
935 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 ...
3
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1answer
2k 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 ...
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2answers
98 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?
2
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2answers
237 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
9
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2answers
7k 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 ...
2
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0answers
69 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 ...
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0answers
49 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
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1answer
940 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
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2answers
155 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?
1
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1answer
48 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 ...
2
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1answer
45 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 ...
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1answer
62 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. ...
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2answers
43 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 question ...
1
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1answer
39 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
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0answers
15 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 ...
1
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1answer
26 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 ...
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2answers
64 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?
3
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1answer
65 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?
2
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3answers
254 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
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1answer
30 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 ...
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2answers
78 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
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2answers
51 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 ...
3
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2answers
3k views

Cactus growing white hard coating

One of my cactuses has been gradually growing a white coating, and the lower outgrowths seem to be shrivelling up and fading, I first noticed this about a year ago and it hasn't stopped no matter what ...
2
votes
3answers
104 views

What disease is this (tomato plants)?

I got these seedlings that i re-potted. The bigger leaves get white/yellow spots and the baby leaves go dark as they sprout and wilt very fast. I have a few varieties in small containers that seem to ...
5
votes
1answer
4k views

Indoor Peace Lily soil suddenly covered in white spots

My 3 year old peace lily has been in this clear pot for almost a year and within the last few weeks these spots began appearing near the roots and now cover the soil on the top layer. The spots are in ...
2
votes
1answer
96 views

Crinkled new leaves on healthy flowering ipomoea/ Morning Glory. virus?

My perfectly healthy Ipomoea tree now has wrinkled new leaves coming up? Could this be a deficiency or an infestation? Thanks in advance [![New crinkled leaves][4]][4] [![New growth.][3]][3] [3]: ...
2
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0answers
35 views

Purplish discoloration on the leaves of solanum torvum

Recently my Solanum torvum started developing purplish discoloration on the leaves It is visible primarily on the top surface of the leaf, and lower, older leaves are more affected than the top ones. ...
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0answers
41 views

Diseases Wreaking Havoc With Peppers Should I Discard Them?

This post has multiple questions inside that I really need help with identifying what's wrong with the plants and should I remove them, if so, which ones. I'm also curious if any of those issues ...
3
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0answers
63 views

What wrong with my cactus

Ive had this cactus which i think is a Pachycereus Schotti/Monstrosus since years and its been growing fabulous. Ive just recently noticed it acquired some brown scales (non Insect) and looks like ...
1
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2answers
66 views

Losing money fast! How do I stop the leaves dying?

These Crassula ovata plants were given to my other a few weeks ago. I didn't pay any attention to them until today. I think they were all green when she got them. They were left outside in the frost, ...
2
votes
1answer
38 views

I have a strange growth on my cacti, around a flower

I got this cacti in the spring, I believe it to be a pin cushion cacti. Its bloomed three times since then, but just this last time a strange growth started to envelop one of the shriveling flowers. ...
2
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1answer
76 views

Fairy castle cactus

My cactus has been suffering for 3 days, and now it look very sick. Could someone tell me the cause for which it looks like this and how I take care of him? Thank you very much!
1
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1answer
30 views

Solanum mammosum withering

I have two Solanum mammosum (nipplefruit) plants next to each other, and the one on the right is starting to wither since a week. The other one is not, what's going on here? The plants are from seeds,...
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0answers
13 views

Curled pink leaves

Desert Rose My leaves at the bottom have curled and turned pink. They are soft and pliable, no yellow or brown on plant. It is also flowering.
1
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1answer
44 views

Curled leaves on Jojo plum and something rot like in fruit

We have planted Jojo plum tree couple weeks ago. Some of tts leaves are curled and there is also something rot like in the fruit. I have not found any aphids in leaves. We have mostly sandy soil and ...
2
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5answers
92 views

Is this soil any good?

Yesterday I was looking at a plant in pretty bad shape that I had bought a few months ago. The plant was indoors and the ceramic pot didn't have any holes at the bottom. When I start looking at the ...
3
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1answer
57 views

What is a white spot with a black dot on my peppermint?

These spots began to appear on the leaves of my peppermint, what could it be? The other side of the leaves looks like this:
2
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0answers
35 views

Why is my passion fruit's leaves are yellow? Is it dying?

I've bought a plant of passion fruit. Recently I've changed the ground of it. Several days ago the leaves began to be yellow and curled up. The photos are below. Could you please give an advise how ...
3
votes
1answer
980 views

Chrysanthemum flowers and buds turning brown and dying, leaves wilting and getting brown spots

I bought these mums less than a month ago and planted them in Miracle Grow Potting Soil. Kept them in sun for 3-4 hours and in shade for the rest. They were left in sun for a couple of days at around ...

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