Questions tagged [diseases]
For questions related to plant diseases.
838
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Verbena leaves getting yellow dots and losing pigment
My verbena is getting yellow dots. It starts with a few of them and then the number of them grows until the leaf turns entirely a lighter shade of green. Comparing it to my other verbena, I think the ...
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Gage tree leaves turned brown
I have an Oullins Golden Gage tree which is 3 years old. This year, many of the leaves have turned brown with some holes in them. I live in South West England, UK and this happened in early spring - ...
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Palm tree rot , bark missing
I have a queen palm with the same issue . Bark missing and tree rot . How can this be fixed?
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Why are my leaves on my royal poincianas turing yellow?
so I started growing my royal poincianas from seeds and I have been noticing that their leaves are starting to turn yellow. I don't know if it was a good idea to put my mom's and and brothers ashes in ...
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What is the yellow stuff growing on these Mulberry trees?
My mom (located in Vancouver, BC), isn't great with technology and asked if I could try to identify what was wrong with her two Mulberry trees. I spent quite a bit of time researching and found ...
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Leaf disease - new leaves on pear tree dying - able to identify from photos?
Does anyone know what is killing these leaves on this pear tree (Comice pear if that matters) and how to treat it?
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what is this on my cowpea leaves?
Found this on my cowpeas. Looks like some kind of infection splashed onto the leaves, so bacterial or fungal probably.
Any ideas? My best guess so far is Cercospora.
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Rowan tree unknown disease
So 2 years ago I have got myself a Sorbus Likjornaja a type of Rowan tree, very very very hard to come by in my area. For those 2 years, it grew splendid with absolutely no worry or issues. But this ...
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What are these clusters of orange dots on the leaves of my serviceberries?
I recently purchased a handful of young Running Serviceberries (A. stolonifera) online but soon after they started to bounce back from shipping I noticed these rusty colored spots on them (almost ...
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What are these white spots on the leaves of my fig tree?
I have a fig tree in my flat and some white spots have appeared and get more and more numerous and spread more and more over the leaves. It is not removable when rubbing with a tissue.
I can't find ...
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129
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Little White Eggs on African Marigold Flower
I am in Southern New Jersey. Can anyone advise on what to do about these little white eggs on my African Marigold?
Update: The sun came out a few hours later and dried up the eggs. But, the flower is ...
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New Fig Tree Leaves Dying
Our fig trees budded and new leaves emerged, but after about a week the edges turned brown and the leaves have curled up and died. Only two leaves are left on one of the trees, though new buds are ...
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Are these withering leaves a problem?
Some of the leaves in the center of this bush are not doing well.
Is this a serious problem, and what can I do to help them bush?
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Crispy burnt leaves on raspberry plant
I have a handful of raspberry patches.
In one of the patches of cultivar prelude the plants are showing some black “crusting” around a small number of leaves, like they were burnt. The cane and other ...
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Spots on Shady Lady leaves - steps to improve
I recently had a Shady Lady tree, (Bucida buceras) the black olive tree), installed in my yard. This was the biggest and best-looking tree at the nursery but I am now realizing why it might have been ...
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Is it normal for young grape leaves to be reddish?
I have a red grape that I'm taking care of since one year. I don't have details about the exact type. This is in the Netherlands; we are currently getting into spring. I notice that the leaves that ...
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Black spots near the roots of my Areca Plant and leaves turning grey and brown!
I have had this areca plant for about 8 months. Lately I have been noticing a lot of brown and grey leaves and even whole stems. I cut off those leaves and removed the stems from the root which were ...
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White spots and dried tips on key lime trees
We grew two key lime trees from seeds. They are now about 3 years old. A few weeks ago they started developing white spots on some of the leaves and some of the new shoots died off. We live in ...
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Why is my jade plant behaving like this?
I purchased a jade plant online one month back. As you can see in the picture it is healthy when purchased. I am keeping it on my desk which is getting afternoon sunlight from a west-facing window.
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1
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636
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Cathedral Live Oak health concerns
I am considering purchasing a field grown Cathedral Live Oak, I think the tree is gorgeous and has a lot of potential but I have three concerns. I will list each concern below with supporting images ...
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Yucca problem: brown spots on stem and leaves
I am new here and here is my problem and thank you for your help! :)
I just noticed that my Yucca is having some problems: if you can see there are small brownish spots on the pleace where leaves come ...
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Monstera deliciousa brown residue on STEMS?
I have a fairly mature monstera deliciousa, that has been thriving and putting out new growth. I moved it into my bathroom for the winter.
It’s now spring so I brought it outside and noticed this ...
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Chilli pepper seeds with dark cores: viability?
I have a ripe crop of serrano chilli peppers (Capsicum annuum). I'm planning to save some seeds for a future crop, and have done some research on what I need to do to dry and store them properly for ...
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What is causing this on my pepper plant?
Can someone help me identify what is happening to my poor peppers?
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280
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What this peony is suffering from?
Does anyone know what this peony is suffering from?
The leaves aren't wilted, they are rigid and rubbery and have twisted themselves into tight, deformed shapes.
The neighbouring peonies appear ...
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What is wrong with my cherry tree?
This tree is about 8 years old but only gives a few cherries a year that's not even tasty. It has a lot of sap coming out of the joints. I cut one out and splited it. I notice a brown line going down ...
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1
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Cayenne-type chili plants: yellow spots on leaves and 'spider web' on stems
It has been a while my chili plants show these symptoms. It seems relatively under control as they are not dying or dropping many leaves, but I'd still like to fix the issue if possible.
Symptoms are: ...
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Pachyphytum compactum small brown spots on leaves and large pale brown spot on stem
I've recently noticed that my pachyphytum compactum started to develop small brown spots on leaves and large pale brown spot on the stem has appeared.
It is very possibly that the succulent was ...
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What to do about areca palm stems and leaves to get healthy again
As you can see in the photo, the stems do not seem healthy. There's also another problem which causes the leaves to turn brown and curly. It is next to the window with direct sunlight, I water it once ...
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62
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Bush Leaves Withering Away
Can somebody identify what is going on what is going on with my bushes here?
Is it some disease? Fungi? Virus? The weather in the area has not been punishingly hot though and this is the first time it ...
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45
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My avocado leaves are dying and I don’t know what’s wrong!
I started this avocado almost two years ago. I live in central Wisconsin and this plant is strictly indoors, sometimes if we have a warm gentle rain in summer it will go out. It currently sits in a ...
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184
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Help identifying the pest/disease on my Schismatoglottis
I've attached a pic of the leaf of a Schismatoglottis I got recently. It's otherwise happy, healthy and flourishing but a few weeks after new leaves emerge they are covered in a slightly brownish ...
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Wilting and stunted growth of vegetables in NFT Hydroponics System
My friends and I are starting a small scale hydroponics farm based in Jakarta, Indonesia. Recently we have experienced a problem in our system, mainly wilting, stunted growth, and yellowing leaves. ...
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What’s wrong with this jasmine?
I planted a jasmine (polyanthum I think) in our backyard last spring. It is positioned in a corner where it gets 2-3 hours of sun on a sunny summer day, but this being the Netherlands, that remains ...
2
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1
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71
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Why is the color draining out of this pin-stripe calathea leaf?
As mentioned in the title. The color at the edges of this leaf is much lighter than that of the center of the leaf. It almost looks like the color is draining out of the plant, or receding away from ...
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Why are the edges of my lemon verbana plant turning brown?
My lemon verbana often has leaves that are dry around the edges. It doesn't happen to all leaves, but it happens too often for my liking.
It's been getting plenty of water, not a whole lot of sun (it'...
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176
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Parlour Palm Browning Leaves
I have had this parlor palm for several years, and it has been in this pot for at least 3 years. I fertilize occasionally every 1-2 months. It usually loses a lower leaf every now and then, which is ...
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White covering on leaves of tulsi (holy basil) in winters
Full gallery
Facing the same problem in 3 of my 4 tulsi plants
Looks like a fungal infection to me, please advice. Happening in winters. It appears to have spread to 2 plants from one. Other non-tulsi ...
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What causes boxwood hedging to lose its leaves in the UK's winter months?
Boxwood is supposed to be an 'ever-green', yet in the UK it's becoming increasingly noticeable over the past few years how they shed their leaves, especially on the top surface, over the winter months ...
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1
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Should I treat soil after slime flux?
I inherited a tree that suffered from slime flux (bacterial wetwood). It had sores on the trunk that oozed liquid and foam, and the run-off created a smelly puddle at the base of the tree. The stink ...
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What's wrong with my citrus?
First two are a lime, second two are a tangerine.
Both of these have done well in previous years. The lime is especially bad it does not seem able to add new leaves, and the existing leaves have ...
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Aloe vera plant has rot deep in the leaf, and is looking wilted
I've had this plant for several years. Last summer I replanted it. It seems to have significantly wilted over the past few months. The leaves used to reach for the sky. A healthy leaf had fallen out ...
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How to treat black stem-tips and leaf-veins in Mango?
The plant in question is a Mallika grafted onto Gomera. It is planted in a fabric pot with general purpose potting soil and resides outdoors in a sunny spot while being protected from the rain.
...
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Flamingo flower (Anthurium) dying: three years on
After a few months of neglecting my plants (only watering and not checking for health problems) I noticed the anthurium is not doing too well. The youngest leaves are withering back, and there aren't ...
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Bring wilting plant back to life
I don't know what kind of plant this is.
A few months ago it started to wilt. If I watered it it seemed to get worse, so I cut way back on watering. The past two weeks I didn't water at all, then I ...
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Walnut Sapling Stem Getting Black
I am worried about this walnut sapling. It was replanted last month and look healthy, hewever, I noticed the lower part of the stem got black. I am worried that the sapling might die. What is causing ...
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What are these white hairs on the underside of water spinach leaves?
I am growing water spinach (Ipomoea aquatica) under grow lights indoors.
Most of them seem to have white 'hairs' growing on the under side of the leaves.
The cotyledons don't seem to be affected.
I ...
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Why do the Walnuts of Our Trees Get Black and Could Not Ripe
We have a cottage in a very close proximity to the Black Sea (around 2 kilometers) in what is referred to as a Temperate Climate Zone environment. We have 3 old walnut trees that give a fair amount of ...
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How to detect Mosaic virus infestation in Hippeastrum seedlings?
If a seed was harvested from an infected Hippeastrum plant, it may happen that by handling the seed pod a virus was transferred to the seed while handling the mother plant and then touching the seed. ...
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Healthy leaf fell off aloe vera plant. Looks like there may be some mold
I transplanted an aloe vera into a larger pot a couple months ago. I used cactus soil. Suddenly a leaf fell of it. The leaf had looked healthy and was green and plump. Upon looking closer I can see ...