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29 votes
Accepted

Why did my sweet corn kernels grow into this?

That's corn smut, a fungus. It's edible and a part of Mexican cuisine. I doubt that you need to notify the authorities, but given that USDA has been trying for decades to eradicate it in the US, it's ...
Jurp's user avatar
  • 19.8k
19 votes

What is this green-ish thing inside the orange?

Preface: This answer is based solely on the search result. I'm not a gardener and I don't have any gardening knowledge to sufficiently answer this with full certainty. Looking at the picture, it ...
Andrew T.'s user avatar
  • 295
12 votes

What is this green-ish thing inside the orange?

Definitely looks like something from a sci fi/horror movie! Black areas within oranges are usually caused by a fungal pathogen - it enters most often at the 'navel' end of the orange and then spreads ...
Bamboo's user avatar
  • 135k
10 votes
Accepted

Why do my Cherry tomatoes split as they ripen?

Small fruiting tomatoes tend to be a lot juicier (that is ratio of meaty pulp to juice) than medium or large fruiting. Tomato produces a skin of a certain size for the number of fruits it has, then as ...
Colin Beckingham's user avatar
10 votes

Why do my Cherry tomatoes split as they ripen?

There are two main causes of fruit split - the first is irregular watering. Once tomatoes have fruitlets, and especially as they start to get bigger and ripen, its critical to water sufficiently every ...
Bamboo's user avatar
  • 135k
9 votes

What are these abnormal tomatoes on my tomato plant?

This looks like blossom end rot. Here is another source of info. According to the second link, which is from Clemson University: After tomatoes are planted, gardeners can minimize the potential ...
That Idiot's user avatar
  • 7,059
9 votes

What's wrong with this fig?

Those white dots are spider mites. There are a lot of them so you will need to apply at least three treatments of soap and water at a rate of 5 ml /liter at five to seven day intervals. This will ...
kevinskio's user avatar
  • 60.3k
8 votes
Accepted

What disease is causing raised blisters on the leaves of my plant?

Alstonia scholaris (L.) R. Br. is a very beautiful ornamental tree, which is commonly known as pagoda tree because of its pagoda like growing habit. It is commonly infected by the Homopteran, ...
Graham Chiu's user avatar
  • 23.4k
8 votes

Need help identifying this disease for my lemon tree

Looks like you have at least two problems. Let's take the last image first which appears to show Citrus Leaf Miner damage. You can see the channels that the miner has burrowed into the leaf. The ...
Colin Beckingham's user avatar
7 votes
Accepted

Orange spots on Polypodium

I can't get a close enough image to examine the spots thoroughly, but because they're evenly spaced, its most likely these are sporangia, or spore cases. It's a sign of a healthy plant and the spores ...
Bamboo's user avatar
  • 135k
7 votes
Accepted

What is wrong with this magnolia?

The light green areas are chlorosis, often an indication of iron or manganese deficiency. Magnolias are very quick in developing chlorosis if they don't have enough iron available - typically not ...
Stephie's user avatar
  • 16.6k
7 votes

It is good to use water of a pond to irrigate my garden?

You only need to be worried about some pathogenic e coli that can be incorporated into plant tissues. And generally these are not found in aquatic environments. The other bacteria, viruses and amoebae ...
Graham Chiu's user avatar
  • 23.4k
7 votes

Treating tree disease that manifests as warts/galls/bumps on leaves

I can't tell what tree that leaf has come from, so it's difficult to identify precisely the cause of the galls on the leaf. Regardless, the vast majority of gall growths like this do not cause harm to ...
Bamboo's user avatar
  • 135k
7 votes
Accepted

What pest is this and how do I treat it?

This is another case of "dog vomit slime mold", or Fuligo septica. It pops up unannounced, often on wood chips (which I see isn't your case here), and spreads a little bit, but in sort of a limited ...
Lorel C.'s user avatar
  • 3,619
6 votes
Accepted

Get rid of pesticide resistant Spider Mites?

Predatory mites that eat spider mites might help. You can buy them, but they may be expensive. Make sure to remove any substances left on the plants that might kill the predatory mites. We have a ...
Brōtsyorfuzthrāx's user avatar
6 votes

What is the disease that affects my plants?

It does look like Sooty Mould, but its impossible to tell from the picture whether there is a scale or aphid infestation, the end result of which is often sooty mould. Treat the scale or insect pest, ...
Bamboo's user avatar
  • 135k
6 votes

Why is this years-old vine dying and showing strange beige spots?

The plant is Rhoicissus rhomboidea 'Ellen Danica', common name Mermaid Vine, though its often referred to as grape ivy. At first glance, rust infection springs to mind, but a closer examination ...
Bamboo's user avatar
  • 135k
6 votes
Accepted

Can you eat lettuce that your dog pees on

Urine from healthy dogs (and humans) is sterile on leaving the body. It can, however, encourage the growth of existing bacteria: so these you would have been exposed to anyway. Faeces are not sterile ...
George of all trades's user avatar
6 votes
Accepted

Is the rapid new growth on this rose bush a sign of Rosette?

These are most likely rose suckers. You should trace it down to where they are originating from (most likely below where your rose was grafted). If that is the case, you want to remove it ASAP from ...
JStorage's user avatar
  • 8,014
6 votes
Accepted

Discoloration of leaves on Carolina Reaper plants

It's probably just sun damage due to the transplant shock, since those leaves are used to a different kind and amount of light. I have a pepper in that sort of situation, and I had some tomatoes in a ...
Brōtsyorfuzthrāx's user avatar
6 votes

My Areca Palm is dying

First thing to do is correct your watering regime - little and often is not a good idea, it's better to let the plant dry out slightly between waterings, and water thoroughly when you do water. If the ...
Bamboo's user avatar
  • 135k
6 votes
Accepted

What is causing the brown streaks and holes in my young cherry blossom tree's leaves (Ireland)?

It looks like you have some miners in your tree, probably larvae (caterpillars) of the Apple leaf mining moth (Lyonetia clerkella). They eat tunnels through the leaves, they are very small as you can ...
benn's user avatar
  • 13.2k
5 votes
Accepted

Why are my basil's stalks turning brown and dying?

It's damping off disease - hopefully, you're not overwatering now, and the rest of the plant still looks healthy, but you may find, as its a fungal infection in the soil, that the rest of it goes the ...
Bamboo's user avatar
  • 135k
5 votes

What is wrong with my beefsteak tomato?

It looks as if the roots haven't enough room - how big is the pot the plant is in? And I'm rather wondering if that circular rim I can see sticking slightly above the soil is actually a small pot ...
Bamboo's user avatar
  • 135k
5 votes
Accepted

Why are large sections of bark peeling off these birch trees? Is it contagious?

Good news! Totally normal and healthy! No worries!!
stormy's user avatar
  • 40.5k
5 votes

Get rid of pesticide resistant Spider Mites?

Spider mites like warm, dry conditions and will thrive in such an environment, so it sounds as if that's what you've provided them with. Plumeria species like to be kept evenly moist from spring ...
Bamboo's user avatar
  • 135k
5 votes

What are these white/yellowish spots on my mexican fence post cactus?

How sure are you, that this is a fungus? To me, it looks suspiciously like scale, although the photos are a bit blurry. Try to pry off one of the bigger thingies. If my suspicion is correct, you'll ...
Stephie's user avatar
  • 16.6k
5 votes

What is this powder-like substance on the leaves of my kiwi tree?

I don't think this is powdery mildew - its appearance isn't right and though these particular plants are prone to American Gooseberry mildew, it doesn't look like that either. Those thick, white ...
Bamboo's user avatar
  • 135k

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