Questions tagged [diseases]

For questions related to plant diseases.

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1answer
15 views
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1answer
67 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
77 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 ...
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2answers
577 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 ...
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2answers
31 views

Can this areca palm be saved and if so how would I do it?

Is my areca palm completely dead or can I save it somehow? All the leaves are dry and either brown or faded green, and the stems have black spots. Please refer to the photograph.
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1answer
140 views

What is this raised, brown growth on my maple tree?

My tree seems to be infected with something, and every week I notice more leaves have this raised, brown growth. What is it, and how do I treat it?
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0answers
32 views

Why have my Chilli Pepper plants started to develop small slightly translucent spots/blotches on the leaves?

See the photos attached of the leaves. I planted these chilli peppers about 2 months ago (march 2020) and they have been sat on my windowsill. We've had relatively hot and sunny weather for the UK ...
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1answer
18 views

Grape Vine identify disease please

Can anyone help me to identify what is wrong with my Muscat Vine? [] []
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0answers
16 views

Ginkgo Tree in south GA

Does anyone care to tell me what is going on to my young Ginkgo tree?(The leaves) The soil is quiet sandy if that helps you. I planted it this past April. It sits a little high for drainage purposes, ...
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3answers
469 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!!
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1answer
125 views

Do my tomatoes have aminopyralid herbicide damage?

Photo below of my tomato plant. This was planted in 3 inches of miracle grow with composted horse manure below, sourced locally. Everything was fine for about 2 weeks, then this morning I noticed that ...
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1answer
42 views

Pyrus Calleryana 'Chanticleer' aka Ornamental Pear tree, ALL leaves are browning and curling ?disease?pest?autumn

Its autumn here in Sydney Australia. Temps are dropping to below 20C by day 9-12C night. I have 5 Pyrus Calleryana 'Chanticleer' aka Ornamental Pear tree in the front yard, 6 years old 4m tall, never ...
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1answer
38 views

Disease on my shade tree?

We live in Georgia. This young shade tree is about 3 years old. Last year I noticed that by July of last year I had lost most of my leaves (they turned all the way brown and fell off). This spring I’...
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29 views

Chilli leaves are dying + misformed

Some of my young chilli plants leaves are very misformed and some have dying ends. This seems to be happening at some level to all of them, any ideas what it is? I sprayed them with pesticide at some ...
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0answers
22 views

The petals of rose flowers are burned

I have a question about my rose flowers. I have two rose flowers which are planted in the garden, one of them is in the sun and another is in shadow during the day. The following problem is ocuured ...
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0answers
131 views

What is wrong with my Hydrangeas

My hydrangeas were looking beautiful until a couple 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 ...
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0answers
38 views

Carolina Reaper and Scorpion pepper leaves yellow and spotty?

So I planted a couple of Carolina Reaper(bottom two pictures) and scorpion pepper (top picture) plants in my garden this year. I transplanted them outdoors around a month ago today. I'm not super ...
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1answer
41 views

Why wait to lop off a bacterial canker?

There is what I think is bacterial canker on my young, multi-species fruiting plum tree. I bought it from a big box store a year ago and planted it, and I noticed this a few weeks ago. Assuming I'm ...
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0answers
31 views

Philodandron dying - black goo

My philodandron is slowly dying (I created a previous post here, but I lost the access to the account for some reason :/) In the other post I showed how it went from a nice big plant to losing all ...
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3answers
45 views

Azalea japonica in trouble

What happened to my beautiful Azalea japonica? I bought it in full bloom about two weeks ago (here in Central Europe), repotted it after a few days (which was perhaps a mistake), initially placed it ...
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1answer
34 views

What is wrong with my tomato plants? The stems are browning from root

I don't know much about gardening. Just started a little rooftop garden during quarantine. I noticed some of my tomato plants were browning from the soil. It looks like the brown parts are not getting ...
2
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1answer
23 views

Fungal or bacterial infestation ? Pachypondium Lamere or Pin Palm

I have this Madagascar Pin Palm or Pachypondium Lamerei which has been attacked by some kind of fungal or bacterial infestation. I've been using an antifungal solution, yesterday was the 3rd ...
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2answers
28 views

Help with columnar blue spruce

Last summer (and after checking info on posts here) I planted three columnar blue spruce trees (picea pungens fastigata). In the fall, I noticed needles losing color and later dropping, leaving ...
2
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2answers
28 views

Brown marks on tomato seedlings?

First time growing tomato plants from seed this year, but the seedlings have brown marks on the cotyledons. I've put the affected seedlings aside through fear of blight, but honestly have very little ...
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0answers
72 views

Monstera yellowing despite proper watering and no apparent sickness

I've had this monstera for about two years now and I've never has this problem, I'm careful not to over/under water, it's thrived until now so I suspect sunlight is not the issue either. I've ...
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2answers
19 views

What are these pink spots on the branch of Lilly Pilly?

This is a photo of the pink spots: There is no discoloration of leaves as far as I can see. The plant itself What are they? Are they harmful? If they should be dealt with, what is the most eco-...
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1answer
644 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.
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1answer
3k views

Brown spots on herbs - treatment and are they ok to eat?

The leaves on all my garden herbs (mint, sage, oregano, thyme, lemon balm) get yellow-brown speckles from late spring, which by late summer almost entirely cover the leaves. What might this disease (...
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1answer
64 views

Sick Gardenia - Can It Be Treated?

I have two gardenia plants that have done well in the garden for many years. I recently noticed many yellowing and browning leaves. Upon inspection, it appears that some of the gardenia buds had ...
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1answer
29 views

Why do my tomato seedlings leafs have white spots? Is it Manganese (Mn) deficiency?

I grew this seedling and five others by starting a slice of tomato in a pot. It's about 6" tall. It's been growing perhaps about a month, and I embarrassingly just found out seed starting mix doesn't ...
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1answer
37 views

Our Aspen are weep brown sap. A web site from Colorado said this condition is terminal for Aspen. Can you help?

Our Aspen are weeping a brown sap. A web site said the condition is terminal. A local weed and feed company said the condition can be treated with an antibiotic for pigs. Do you have information on ...
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0answers
21 views

What is this disease on my Christmas Palm, and how do I treat it?

I bought this Christmas Palm 10 weeks ago, and it was healthy and full, with no signs of disease. I'm in Ft. Lauderdale, zone 10. I placed the palm on my sometimes windy, south-facing balcony. I ...
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0answers
21 views

My Meyer lemon tree had so many diseases

So everything I read was to take curling or diseased leaves and branches off. I sprayed with neem oil and copper fungicide biweekly I live in zone 9 and the tree is in the ground with soil and compost ...
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3answers
17k views

White crystal like spot on bottom side of chili leaves

I have a (thai) chili in my kitchen. It seems to be fine overall. One week ago I discovered some white spots on the bottom of the leaves (see image). Whatever it is it does not seem to be moving. It ...
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0answers
33 views

What are these Tiny Brown Bumps on my Bay Tree Leaves?

I have a large (20+ ft tall) sweet bay laurel tree in my backyard. I recently noticed a majority of the leaves have extremely tiny, shiny brown/black bumps on them. From my research it seems like it ...
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1answer
32 views

What are these Mites/Aphids on Bamboo?

We live in Pune, India which has a dry climate. We see these aphids or mites on the leaves of our bamboo. The round cocoons are on the under side of the leaves. (Is cocoon the correct word?) The ...
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0answers
16 views

Need help! What's wrong with my peppers? Brown on underside of leaves

I'm a beginner and this is my first year growing hot peppers. A few of my peppers have started to become brown under the leaves and the plants slowly begin to look sickly. I've looked for similar ...
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1answer
4k views

Tomatoes…what is the difference between early blight and late blight?

What are the differences in early and late blight of tomatoes? Can you cut off affected areas of one or both to prolong the life of the plant? What can one do to prevent this disease, what can one do ...
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1answer
33 views

what's my tomatoes problem? is that a fungs? what's the solution

it take all of the plants and we use several fungicide like chlorothalonil but it didn't work.
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2answers
246 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 ...
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0answers
24 views

Meyer lemon tree is ailing

I've had my Meyer lemon tree for more than 10 years. It's small -- maybe 2 feet tall -- but mighty: This season, it produced 30 (!) lemons that I harvested over the winter. But by February all its ...
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3answers
417 views

Is this a bronze birch borer infestation?

I have three birch trees in my front yard that I've been told have a bronze birch borer infestation, based primarily on the presence of numerous holes, each about 6-7 mm wide. There does seem to be ...
0
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1answer
26 views

peace lily is dying

I have 2 peace lily and I keep them inside, water them once a week but one of them started to drop and dying, I moved it to a bigger pot and it was getting well but then drop and die again!
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1answer
134 views

Getting rid of strange eggs in houseplant soil

Help! I have a peace lily which I bought three years ago for almost a nothing as it was almost dead. I nursed it back to health and was doing great, after about a year of having it in it’s nursery pot ...
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0answers
33 views

Weird spots on avocado plant

My avocado plant of 4 years is having some weird pink-ish/white spots on some of its leafs. What are these and are they harmful? Should I remove those leafs or is there something else I should do? ...
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0answers
30 views

Can someone help me diagnose what is wrong with my cactus and how do I treat it?

Does anyone know what is happening to my cactus. It was a beautiful specimen when I got it and was fine for a year or so, but then it gradually started with the browning and weird skin disease. It ...
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0answers
22 views

What is causing my avocado tree rot on leaf

I’m a newbie to growing avocado tree. This guys been growing for afew months and has recently started getting light brown spots on one of its leafs. The other leafs look okay apart from one or two ...
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0answers
19 views

What is the cause of the blackening of leaves?

My plant leaf seems to have diseased. It's leaf seems blacken on edge and cut on middle. Even new leaf is getting this problem. Could anyone please help me? Thanks in advance.
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0answers
18 views

Black mold on top of soil

2 days after pulling hydroperoxide around the stem of a plant to possibly kill root rot dark black mole looking substance formed around the area where the powder peroxide was poured what is that
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1answer
56 views

What Disease is on my Mango Plant? Are there any remedies to cure it?

I'm growing a mango tree and discovered a few days ago some oily dots on the top of a lot of the leaves and on the back of those specific leaves were black patches scattered around. A few isolated ...

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