Questions tagged [diseases]

For questions related to plant diseases.

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Do my peas have Fusarium wilt?

I am an absolute beginner gardener, and I have been growing some Sugar Snap peas in a large pot. They started out seeming very healthy, but have recently slowed their growth to a near complete stop, ...
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25 views

What’s wrong with my snake plant leaves?

I recently discovered the tip of my snake plant had turned blackish and cut off from the rest of the plant, basically dead, the dead part feels moist and floppy. I don’t know what’s wrong if I’m under ...
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1answer
31 views

Parsley leaves losing colour/ white spots

My parsley and thyme leaves have started losing color. Does anyone know what might be the cause? They are slowly turning white. The plants have been in this container for a few years could the soil be ...
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0answers
25 views

Why are the leaves on my mango seedling turning brown?

Also the tiny new leaves (on the top of the plant) are falling off right after they pop up. Then the plant grows new ones and they fall off again. Is it because of overwatering? I also recently had a ...
2
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1answer
29 views

What disease is causing raised blisters on the leaves of my java plum tree?

Plant: Syzygium cumini. Appearance: blisters (gall) on both sides. After some time holes appear in the blisters. What kind of disease is this? This exists all year round and is not seasonal.
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Brown spots on avocado tree leaves

I transplanted my 7 years old avocado tree two months ago and since then it's condition continually worsened. First, the leaves lost turgor for a few weeks and I thought that this was over. ...
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1answer
28 views

What is the disease in my chilli plant where the leaves of only one plant is becoming yellow?

I have several chilli plants in my yard but out of these 10 plants only one plant is exhibiting this problem. These plants are almost 4 months old. Unable to find a match for the photos from any ...
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0answers
24 views

Cymbidium orchid - black spots on the leaves

I bought a cymbidium orchid two days ago. Today I noticed that about 30% of the leaves have black spots on their tips (see the picture). Should I be worried or is it something normal? If it's some ...
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0answers
19 views

My Areca Palm is browning

I've had this plant for the last five months and since then I had problems with insects in the begining and right after I got over that the plant is having another problem I can't identify. Can anyone ...
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0answers
38 views

Is my tree OK? (Bubbly effect on stem of Rainbow Eucalyptus)

We have a ~1 year old Rainbow Eucalyptus tree. It's now about 1 metre tall, and we've noticed a concerning 'bubbly' texture on most of its upper stems. The "bubbliness" is the same sort of ...
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0answers
16 views

Rose plant having problem

This is my new Rose plant I bought it last week from the nursery. I have already lost one last month. Leaves are turning yellow & brown. I only watered it once. I don't want to lose this one 🥺.
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21 views

Lemon tree drops its leaves

We bought this lemon tree about a month ago. It was in a good condition when we purchased it. At first, we placed it outside, and for the last ten days, we brought it inside, situated right in front ...
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What are these weird white spots and black spots on my Monstera?

I used a microscope on one of those black dots and took a picture. I also found this insect that looks suspicious. I don't know if the white spots are related to the black dots. What can I do?
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1answer
36 views

Meyer Lemon Tree Health Issues Help

I am a new Meyer Lemon tree owner. My trees' leaves have gradually yellowed, and started dropping. I thought they were under-watered, so I started watering more regularly, but that doesn't appear to ...
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0answers
73 views

Brownish marks on upper surface of chilli leaves gradually forming lesions

I have a young ghost chilli growing in a pot outside which is displaying browning on the upper surface (but not on the lower surface) of its leaves, primarily along the veins at the base of the plant. ...
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0answers
22 views

Why are my olive trees losing their leaves?

I have olive trees that I recently bought to replace my cypress that went sick (turning orange). Yet, my olive trees are losing their leaves, some branches are almost naked. It might not be related ...
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26 views

what fungus or bacterium is eating away at the leaves of my fava bean plant?

I am growing aquadulce fava bean plants and something is eating holes into the leaves. At first i thought this was caused by slugs but when i look closely i can actually see that the holes are ...
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0answers
19 views

7 years old Rose shrub giving shriveled up leaves and flowers

I live in South India ,we shifted into our new house 7 years ago and planted this dark pink rose soon after from a nursery .There were 2 of them, but one of them died soon after planting, from shock I ...
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1answer
44 views

Mandarin tree with yellow leaves and black spots (potted)

This grafted 'imperial' mandarin tree was planted in this pot over a year ago and is not healthy. Other plants at the store actually had fruit on them when I purchased this but it has never fruited. ...
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0answers
16 views

Browning at base of my cactus

I have had this cactus for a while now (about 4 or 5 years) and recently noticed browning near the base. The spines at the bottom are also a different color and pressed closer to the body of the ...
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28 views

Please help! Something bad is happening to my Monstrea Deliciosa

I have an urgent situation with my Monstrea Deliciosa. Yellowish stains appeared on the leaves last night. I watch the plant every day and I am sure they were not there yesterday. About half of the ...
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18 views

Olive tree leaves are turning brown but stays on the branches

We transplanted a mature olive tree way back March and it's been adjusting well on the new location. But starting mid of July, at the peak of summer here in Qatar, the leaves of 1 big branch started ...
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0answers
17 views

Which disease could be turning the leaves on my tomato plants BLUE?

The leaves are very dry (though the plants were watered regularly and consistenly), have this bluish tint and those brown spots. Googled, but found nothing, which is weird. What could this be?
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26 views

Identifying plague affecting chrysalidocarpus lutescens

Here a close picture of what it is attacking this poor plant: I tried to spot movement among the white spots but there is none so my first suspect is some kind of fungi... I applied some polyvalent ...
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1answer
30 views

Black spots with white ring around them on Zinnia leaves

We have grown Zinnias in our garden since 3-4 years, In South India . The initial batches were very healthy and robust ,with stunning flowers. but since the last 1 year or so I have noticed that the ...
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1answer
120 views

Will mulching be used as a breeding ground by harmful insects and/or bacteria?

I have seen that after 2-3 weeks after applying the mulch of rice hull one of the eggplants died. It firstly started with drooping unexpectedly. I did rule out over or under watering, as schedule and ...
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1answer
35 views

Dark stains on my english ivy. What am I doing wrong?

I have the following problem: Some leaves of my English Ivy became a little bit lifeless and droopy. On some leaves dark stains have appeared (I've marked them with red circles on the photo). Is my ...
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0answers
25 views

Can anyone help me identify the problem with my Areca Palm

I got this plant some 2 months ago from a local nursery and recently I noticed dark brown and yellow spots and now It started dying as you can see int the second image. I am watering it when the upper ...
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1answer
89 views

Dendrobium with black spots on the leaves

There are these black spots on almost every leaf of our Dendrobium (?). It has flowered once but has kind of gone into a resting phase ever since, I guess that is normal (please correct me if it's not)...
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53 views

What are these orange spots on my Dracaena Fragrans?

Sorry for the long question, feel free to just go off of the pictures! Background info.: I've had him for about 10 months. He gets bright indirect light in a SW window, watered with rain or de-...
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1answer
32 views

Please identify cause of dead spots on my Malabar spinach

I noticed there are small spots on the plant, but they keep getting bigger and eventually turned brown, like dead spots on the leaf. How do I get rid of these? I've already cut all the affected leaves ...
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1answer
52 views

Why are my daisy flowers dying? :((

Ive got Osteospermum (African Daisy), however I cant figure out why the flowers are getting their petals chopped and are mostly dying, The plant seems healthy and I cant see any insects or bugs around....
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1answer
28 views

How to cut calculated height with trimmer

I recently redid our lawn and it was beautiful grown turf (thanks to @bamboo) until the mice/rat (we can’t figure out what is that)next door ruined it and tried to dig places. Now from book of ...
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1answer
33 views

What caused the leaf discoloration in my Kaffir lime?

The leaves of my kaffir lime plant have the grainy discoloration which looks like a disease. I assume normal leaves would be plain dark green. I didn't see insects or aphids living or staying in the ...
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12 views

Dying Jacaranda

I posted a few weeks back asking you guys why there was a deposit on my Jacaranda leaf. I didn’t got an answer but I found out online it could have something to do with my water and that it was ...
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2answers
95 views

Diagnosing white fuzz on kale. Is this powdery mildew?

I think I'm dealing with powdery mildew, but I want to confirm that diagnosis. Context: I'm in Portland, OR. I've got several raised beds with a couple kinds of kale, broccoli, brussels sprouts, some ...
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1answer
44 views

Is my orchid diseased?

I bought a pair of Vanda orchids online. One of them looks fine and healthy but the other one had black bruising on the leaves more than halfway up the plant. The articles I read.on the net suggest ...
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0answers
71 views

What's wrong with my fairy castle cactus?

My cactus used to be really thick and dark green but now it's so much skinnier and starting to shrivel up. Some of the arms are turning a dusty kind of brown and they're all leaning away from the stem ...
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0answers
17 views

What’s happening to my Jacaranda

Recently my jacaranda leaf are starting to appear lazy and heavy. I’ve notice some deposit on the leaf, what is it? Should I be worried?
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0answers
22 views

What are these gall like growths on my spuds?

I noticed a volunteer potato plant in the garden a month or so ago which I thought was cool. It's just now at the tail end of winter in the southern hemisphere. Today I noticed that it had gall like ...
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0answers
29 views

Single large brown spot on Dracaena Dorado

I have been giving my dracaena dorado some fertilizer this year, on and off, maybe twice a month or less since March. I let it dry out between watering. The leaf tips were turning brown so I moved it ...
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0answers
48 views

Yellowing spotted morning glory leaves

I'm wondering what's causing the leaves of my morning glories to turn yellow and develop black/brown patches, along with what looks to be like white mold, as shown in this photo: This is worse in the ...
3
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1answer
26 views

Browning on Silver Spurflower leaves? Is this a fungus or lack of water?

I have noticed over the last week my Silver Spurflower leaves have started to go brown and start curling. They are in large containers and other plants in the containers have also been getting similar ...
4
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1answer
57 views

Any scientific expanation on Thuja Occidentalis turning brown (dry)?

Thuja Occidentalis trees often turn partially brown, dry and they never tend to recover on their own. My problem is definitely with entire branches (as opposed to individual leaves). I water the trees ...
4
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3answers
44 views

Scales/disease on tree?

I have this large tree in my back yard that has about 20% dead branches. The tree is very tall, probably 40+ feet. Most of the branches have this scale on them, and many of the leaves have brown spots....
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0answers
23 views

Unknown discoloration on tomato plant: how serious is this?

One of the tomato plants in our garden has discoloration both on the upper leaves and on one or two of the fruit, as here: How serious is this, and how should I address it? Is the plant salvageable? ...
4
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1answer
79 views

What are those brown / white spots on my cactus?

There are 3 of this same cactus sharing the pot. Only one of them is getting these spots. What could it be? Fungus? Sun burn? They are in my balcony, they don't get rain, and they get like 3-4 hours ...
18
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2answers
4k views

Why did my sweet corn kernels grow into this?

This corn is about 2 weeks premature to be picked. It had lots of green bugs and japanese beetles chowing on it, but I didn't do anything weird to it (no Ninja-Turtle ooze for instance). I can't ...
4
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3answers
61 views

What is damaging my tree Aloe?

I've had a Aloe plant for many years, mostly indoors. I finally repotted it a couple of months ago and split most of the pups off. All of the plants seem to have some sort of disease since then, ...
4
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1answer
105 views

Apple tree - Is this a disease?

Started noticing this from last summer(December, NZ) and now getting bigger. Had a good harvest last season, but, getting worried :( any information on what it is and whether to treat it or not will ...

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