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Questions tagged [diseases]

For questions related to plant diseases.

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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 ...
WornChain's user avatar
  • 131
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0 answers
30 views

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?
Melanie's user avatar
1 vote
1 answer
32 views

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
Gwen's user avatar
  • 11
1 vote
1 answer
16 views

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 ...
Michele Gatto's user avatar
2 votes
1 answer
58 views

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 ...
Daniel Michael's user avatar
2 votes
1 answer
22 views

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 ...
s_ha_dum's user avatar
  • 121
1 vote
0 answers
18 views

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
Holly Pollard's user avatar
2 votes
0 answers
61 views

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 ...
Rejexx's user avatar
  • 21
1 vote
1 answer
18 views

Wigelia branches become hollow and break off easily by hand

My wigelia 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 are the larger branches. Appears ...
Annie's user avatar
  • 11
2 votes
1 answer
37 views

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 ...
bobby_yan's user avatar
6 votes
1 answer
67 views

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?
Loki Kriasus's user avatar
2 votes
0 answers
16 views

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 ...
Krivers's user avatar
  • 121
1 vote
1 answer
30 views

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
Minikui's user avatar
  • 11
2 votes
1 answer
62 views

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 ...
Darlene  Ramey's user avatar
1 vote
0 answers
41 views

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?
JanieNeutron's user avatar
4 votes
0 answers
55 views

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 ...
Sebastián's user avatar
1 vote
0 answers
53 views

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° ...
cartoon's user avatar
  • 11
4 votes
0 answers
26 views

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 ...
sformel's user avatar
  • 41
3 votes
1 answer
28 views

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 ...
Fix4Dirt's user avatar
2 votes
1 answer
86 views

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 ...
Reihani's user avatar
  • 153
1 vote
0 answers
25 views

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!
Shellehz's user avatar
1 vote
1 answer
41 views

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)
shantanuo's user avatar
  • 141
2 votes
0 answers
329 views

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 ...
Don's user avatar
  • 21
2 votes
1 answer
206 views

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?
Alice's user avatar
  • 21
3 votes
0 answers
107 views

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 ...
Clement C.'s user avatar
3 votes
1 answer
155 views

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 ...
Jugo's user avatar
  • 31
3 votes
0 answers
43 views

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 ...
Seb's user avatar
  • 31
2 votes
1 answer
103 views

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 ...
Plasman's user avatar
  • 123
1 vote
1 answer
55 views

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 ...
Nikolai Evans's user avatar
2 votes
0 answers
18 views

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 ...
Nora Tiger's user avatar
2 votes
1 answer
45 views

Are these photinia's roots normal?

They've got an orangish colour, is it normal for this plant?
will's user avatar
  • 21
1 vote
1 answer
67 views

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.
Jamie Stephens's user avatar
2 votes
1 answer
708 views

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 ...
Felice Pollano's user avatar
4 votes
0 answers
123 views

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 ...
user37509's user avatar
2 votes
0 answers
10 views

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.
Carolyn Williams's user avatar
3 votes
0 answers
28 views

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 ...
Jim Garrison's user avatar
2 votes
1 answer
62 views

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?
Dave Hall's user avatar
3 votes
1 answer
41 views

Identifying issue with apple tree

I recently bought a potted apple tree from a store and honestly it didn’t look amazing there (and I kinda felt sorry for it). I took it home and following advice of how online repotted it in a larger ...
David Burford's user avatar
2 votes
1 answer
41 views

Disinfecting greenhouse

We have a small greenhouse/polytunnel (4×5×2,5 m) and this year is first season for growing tomatoes and peppers in it. However, this year was challenging regarding weather and diseases. Each time ...
False Identity's user avatar
2 votes
0 answers
64 views

What is this on my Crimson King Maple leaves that are drying up with sticky film on leaves

A week ago only some of the leaves on the Crimson King Maple became dried and some of the other leaves have a waxy or slimy film that is on them. The leaves are sticky looking with a film on the ...
Sylvia's user avatar
  • 21
3 votes
1 answer
198 views

Bark on plum tree concern

I noticed earlier on our plum tree that the bark on one of the limbs is a very slight reddish colour and what look like cracks. You can see the another tree limb on the left that looks fine Any ideas ...
Mert's user avatar
  • 125
5 votes
1 answer
109 views

What's wrong with my apple tree?

Some of the leaves on my apple tree are showing like this. [ Should I be concerned? Also, what's this white stuff? Is it Woolly Aphids? Climate; Istanbul. Hot summers, cold winters. We've recently ...
Mert's user avatar
  • 125
3 votes
0 answers
24 views

Diagnose illness in dying watermelon vines

It seemed to me that I had a nice health crop of water melon plants growing. Then I noticed the leafs developing brown spots and start to get brittle dry out, with some brown spots eventually turning ...
vegfarm-edward's user avatar
0 votes
0 answers
72 views

Watermelon Disease Identification

I've planted this watermelon 50 days ago, I'm in Zone 8 in Dallas, TX. I'm wondering what the disease that has afflicted the leaves is, and if I should harvest the fruit now and if it's still edible.
brandon's user avatar
  • 523
3 votes
1 answer
336 views

Blueberry Plant is Sick or just Overwatered?

I'm a newbie and could use some help. So I just got my first blueberry bushes and am very excited, but one of the bushes (Jubilee Southern Highbush) is showing some concerning signs. The leaves are ...
Matt Buckley's user avatar
1 vote
1 answer
23 views

Norfolk Island Pine

My Norfolk Island pine is dying, I normally give it 3/4 solo cup of water every two weeks, but it got over watered I believe (two weeks straight instead of skipping) Please advise. Is there any hope ...
Michelle Mullins's user avatar
0 votes
0 answers
30 views

White stuff on mango not leaves

Hello…My mangoes have this white cotton puffy substance on the fruit but not the leaves. The leaves are nice and healthy looking.It's a strange substance that has two appearances. One looks like tiny ...
Scott Hellner's user avatar
0 votes
0 answers
18 views

Echiveria Spots Disease?

I got this echiveria a few months ago and its been doing good but ive noticed a few "spots" on it lately and im not sure if this is normal or is it infection, Fungus or disease? one time one ...
Twurti's user avatar
  • 141
0 votes
0 answers
37 views

Why are my tomato leaves yellowing?

I'm in Toronto Canada and noticed no fruit set as well as many lower leaves turning yellow. Is this a nitrogen issue? I also noticed an abundance of pillbugs near my plot too, some even eating the ...
ParthianShotgun's user avatar
0 votes
0 answers
40 views

Black spots on gooseberry leaves

I have gooseberry/red currant plant (grafted). A some point black spots appeared on gooseberry leaves. They appear overnight on more mature leaves. Red currant leaves does not seem to be affected in ...
Michał Pająk's user avatar

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