Questions tagged [diseases]
For questions related to plant diseases.
862 questions
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White fungus at the tree base leading to leaf loss
I am located in Adelaide, SA, and have noticed a significant issue with the trees on my street, including my own. Many of the trees are exhibiting white fungal or mushroom-like growths at their bases ...
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1
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American Pillar Arborvitae Flowering or Diseased?
What is happening at the tips of this American Pillar arborvitae?
The plant is 3 years old and part of a row of about 15 similar plants. It is shorter than the others and started developing brown ...
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0
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Citrus tree with dried branches and falling leaves
I was told by someone at Home Depot it was root rot but I wanted a second opinion.
The main symptoms are sections with
no leaves
dead branches
Leaves with soot like substance heard it was harmless
...
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American persimmon - black spots on leaves and fruits
What's these black spots on leaves? They are also visible on the fruits, is it some kind of fungal infection?
- 485
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What am I doing wrong with my cactuses?
I have quite a few cactuses and recently have had some that have died. They have all have some weird signs that I wasn't able to find anything about on Google.
I've attached pictures, but some have ...
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4
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1
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What is bothering my peach, apple, cherry and pear trees?
These pics are from my peach, but I see similar things on some of my other three's branches and trunks as well. They are definitely not ants, I don't see any ants (or any other visible bugs on them) ...
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Leaves darkening, stiffening, curling up, brown spots underneath - is this Little Cherry disease?
This is a Montmorency cherry. Its leaves became darker in color, stiffer, curled up and have a lot of small brown spots underneath.
Is this Little Cherry disease?
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2
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Watermelon huge disease
Leaves started yellowing then die completly. Some vines died completly. Should I worry? I afraid they will die before fruits ripe.
Charleston Gray:
Edit: they look like to be mostly dead now:
- 485
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Boxwood moth plan for my shrub in NY State
My neighborhood seems to have a very recent infestation of boxwood moths.
By the time I noticed it, it was pretty late. I brought in a great company that the guy I use for cleanups and mowing ...
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3
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0
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What would make my sunflower leaves as they’re growing start to shrivel up and become almost deformed?
The plant seems fine, but now the leaves almost look, wrinkled as they’re growing out and look like they are not taking true shape the edges have a bit of black on them, where they are wrinkled and ...
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Why is some pachysandra dying?
I planted some cuttings last year and they all did well until this year. While I planted many more cuttings this year, some of the established plants are wilting, developing brown leaves, and dying.
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I have had this same infestation for 2 years on my fig tree. It does appear to be a spidery webb like a maggot under the web [closed]
I have had the same infestation for the last 2 years. When you wet the web and pull it off the leaf there is always what looks like a maggot under the web. Does anyone know what it is?
3
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1
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136
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what is the stringy stuff growing off this plant?
i noticed stringy stuff off a plant I have and am concerned its some sort of mold ... its very fine like a cobweb whitish in color and whispy. it is not sticky like a spider web and i dont see any ...
- 131
3
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Dark spots on tomato plant leaves
I have three indeterminate baby-tomato plants that all have gotten leaves with these dark spots. It almost looks like ink spots, but also affects the edge of the leaf somewhat. It has mostly affected ...
- 131
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My Japanese Maple is showing little white looking roots on the trunk. Does anyone know what it is?
It was transplanted about 6 weeks ago. Went into shock and is now recovering. I'm thinking a fungus?
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Why is there white spots on the stems of my tomatoes
Theres a kind of white i guess youd call it a fungus looking stuff growning on a couple of mt tomatoe plants
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Raspberry plant with black streaks from the base
I've ordered a bunch of raspberry plants from a reputable nursery here in Italy.
One of them as this black streak that start from the base and goes upwards.
It also withers the leaves.
I don't think ...
2
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1
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123
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Is this leaf spot disease?
I have this tall dracaena marginata tree in my home. It has 2 heads. I noticed the one head has a bunch of spots on its leaves. The other head doesn't have these spots. I'm thinking it's leaf spot ...
2
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1
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Identify waxy spots on Agave Americana Variegata
My girlfriend has an agave plant (Agave Americana Variegata we think) she got from a friend a few years ago and we have recently noticed waxy looking spots on a few of the lower leaves, as shown in ...
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0
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Tiny Holes in a few hibiscus leaves. Also slight yellowing
What to do? Hibiscus plants Tiny holes and slight yellowing on leaves. Looked like very small ants on the leaves. Also thought I saw a small small whitish spider
2
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Why are my raspberry leaves drying up but still green?
Raspberry plants have leaves that start to dry and curl up. The leaves are crisp and crinkly. It starts at the leaf edge and eventually the whole leaf is dried up. I planted these last year and didn’t ...
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Weigela branches become hollow and break off easily by hand
My weigela shrub has large holes in the branches near the ground. The branches eventually die and can be broken off easily because they are hollow inside. These ones are the larger branches.
Appears ...
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2
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1
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86
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Dying Pachysandra
The pachysandra on one side of my front yard died gradually in the past two years, but the other side (last photo) is OK. I have an irrigation system, and water everywhere regularly. I live in Long ...
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6
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What is this green powdery coating on a young cherry tree trunk?
It is Montmorency cherry on Mazzard rootstock.
The tree was planted about a month ago. I do not remember whether this green powdery coating was there or not when planting.
What is this coating?
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Grape vine identify disease
I would like to ask what could be the problem with my vine. The vine grows near the wall in central Europe and so far there has been no problem with it. This year, however, it started to dry from the ...
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42
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Peace lily green spots growing in pot
I checked on my peace lily and I see these weird yellowish green spots in the soil around it… what are these?? Are they dangerous?? What do I do
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1
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Thuja Arborvitae Trees, 2 yr
I planted 10 Thuja fast growing Arborvitae trees 2 yr. ago. They are about 3-4 ft tall now. Just the other day I noticed very small light green balls on 4 of them. I don't know if this is normal or ...
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What is killing my trees? (Northern Utah) [closed]
Our cherry tree is completely dead, our flowering parking strip tree is very nearly dead, and our apple tree seems to be well on its way. What on earth is happening here?
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My bean plants are struggling, how can I help them?
I'm growing three different colored beans, one is white, one is yellow, and one is red. They were growing fine, but it wasn't until about 2 weeks ago that problems started to arise. Two of them ...
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139
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Why are my mango's leaves are getting brown and curling?
I started to grow a mango tree from seed 2 years ago in a pot. The mango tree is outside on my balcony when temperatures are above 15° celsius otherwise it stays inside where temperature is 20° ...
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help identifying fungi/virus on Agave americana
TL;DR I'm trying to identify a pathogen on my agave.
I have an Agave americana in my yard in New Orleans, LA. It has generally grown vigorously, although it sometimes struggles during wet + cloudy ...
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Red Apple Groundcover Dying
Have red apple ground cover (Aptenia cordifolia), usually very green and very hardy! However, over the past few days, it seems it has quickly been dying back. It seems to be in splotches. Is this ...
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2
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1
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141
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Leaf Curling in Japanese Loquat
Why does the deformation/curling (shown by the red circles) happen for the leaves of my Japanese loquat?
It has been a few days since I bought this tree, and the young leaves on the crown have risen ...
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Black and white spots on my pepper plants
I can’t see any bugs and the spots don’t rub off. The leaves eventually become weak and fall off the plant.
Any diagnosis and treatment appreciated!
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Is this some sort of disease?
I do not see that on all plants. But some plants have this near each leaf. Is this some disease?
(Red Amaranth)
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0
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542
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Brown Spots and Yellow Leaves on Hibiscus
I get brown spots that eventually turn my Hibiscus leaves yellow and they fall off. It doesn't kill the plant but I have to trim it down when this happens. What is this and what do I do about it? I ...
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2
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1
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Black spots on my ruby ficus elastica
Does anyone know what these black spots on my ficus are and how to treat? I had to put it out in the sun when my house was being painted, could it be sunburn? Or maybe a fungus?
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3
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Avocado tree wilting indoors
My indoors avocado plants have been looking worse and worse over the past couple months, even though they are receiving plenty of sun (summer in Australia).
Their leaves have been drooping, becoming ...
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1
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Is my fairy castle cactus infected with a fungus?
The cactus was a vibrant green when bought and has been slowly turning brown over time. It's only watered when the soil is dry, about 2-3 weeks apart. The soil drains quick. More or less water doesn't ...
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0
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Large white marks and curled up basil leaves
I’ve grown this plant from seed indoors under grow lights. Potting mix is ProMix organic. They looked great at first but then started developing these white marks and the leaves started curling up all ...
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1
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Why are my indoor grown Loquat saplings, grown from seeds, getting wilted and blackened leaves and dying?
I would like to apologise for the fact that I am not a good or experienced gardener.
I had some loquat seeds and I thought I'd try to grow them, now they have sprouted and grown leaves I re-potted ...
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Are these apple saplings turning yellow due to autumn or to a virus
So these are 4 year old saplings. They didn’t loose leaves when I began growing them, I thinks it's due to being inside all the time. I just want to make sure, if they're losing leaves due to winter ...
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0
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Purple blisters on my opuntia cactus, need advice
I've had my cactus for a couple years now and it's been doing fine up until a couple weeks ago. It started producing these strange purple blisters where the fuzz comes out. I've been searching ...
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What are the spots on my lilac bush?
I just had someone plant lilac bushes for me and this is what they look like.
They don’t seem healthy.
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1
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What is this damage on my Anthurium leaf?
I've got this on a leaf on an Anthurium:
Is this a disease? Do I have to cut this leaf? If so where is the best? From the base or just the leaf? It is in the same situations from days, without any ...
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Strange growth on a pepper plant
I noticed a strange growth on a Capsicum chinense plant. Based on location I believe, it is is some sort of deformation of the flower bud (maybe fasciation).
It resembles broccoli florets. No other ...
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Is it healthy to consume pumpkin flowers with its vines diseased affected by Squash Bug?
Is it OK to eat flowers of Pumpkins Vines affected by Squash Bug? The vines are dying but not the flowers or Pumpkins, Missouri.
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Nyssa sylvatica - Identify possible disease?
Region is Pacific Northwest (Portland)
We have a 12 ft tall Nyssa Sylvatica that's showing significant brown leaf spotting that is worse the higher you go. Photos are below.
Last year, while still ...
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How can I treat powdery mildew
I have a grape vine in my garden and each summer it starts off fine but then Powdery mildew seems to kick in as the summer progresses. Is there a way I can treat it?
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