Gardening and Landscaping Stack Exchange
Gardening and Landscaping Stack Exchange

Questions tagged [diseases]

For questions related to plant diseases.

Plants can be infected by a number of diseases. These can be caused by micro-organisms (e.g. bacteria, fungi, viruses; and multi-cellular creatures such as nematodes).

Macroscopic creatures (e.g. mites and aphids) and water/nutrient problems (too little or too much) can also cause symptoms that can be confused with diseases.

Use this tag for all questions related to diseases - especially diagnosis, management, and cures. Please include pictures of the affected parts of the plants.

816 questions
0
votes
2 answers

What are these pink spots on the branch of Lilly Pilly?

This is a photo of the pink spots: There is no discoloration of leaves as far as I can see. The plant itself What are they? Are they harmful? If they should be dealt with, what is the most eco-friendly way?
Anthony Kong
  • 441
  • 1
  • 4
  • 12
0
votes
0 answers

My Meyer lemon tree had so many diseases

So everything I read was to take curling or diseased leaves and branches off. I sprayed with neem oil and copper fungicide biweekly I live in zone 9 and the tree is in the ground with soil and compost and mulch on top. I got a little out of hand and…
Realm_of_wishes
  • 1
0
votes
1 answer

peace lily is dying

I have 2 peace lily and I keep them inside, water them once a week but one of them started to drop and dying, I moved it to a bigger pot and it was getting well but then drop and die again!
Sarah Sami
  • 103
  • 3
0
votes
1 answer

Getting rid of strange eggs in houseplant soil

Help! I have a peace lily which I bought three years ago for almost a nothing as it was almost dead. I nursed it back to health and was doing great, after about a year of having it in it’s nursery pot I repotted it in a bigger pot using normal…
Rbo
  • 1
  • 2
0
votes
2 answers

What are those white spots? Are they mould & harmful?

I have an indoor plant located at the windows of my kitchen. I water it every 2-3 days with rice water and the plant has been growing well. Recently I spotted some white spot at the soil of the plant. Could they be mould? Are they harmful? If yes,…
hunterex
  • 197
  • 1
  • 1
  • 4
0
votes
2 answers

Is this one of the incurable Canna Indica viruses?

More higher resolution images are here: https://i.stack.imgur.com/KbrrF.jpg
Natan Yellin
  • 115
  • 4
0
votes
1 answer

White/brown patch on a young monstera leaf - what to do?

I was happy when I saw my Monstera growing a new leaf, but recently I noticed a white/brown patch on it and I'm getting worried. What does the patch signify? How can I help the plant?
Kuba Orlik
  • 131
  • 1
  • 4
0
votes
1 answer

Kumquat leaf diseases or some kind of stress

I've got a Fortunella Obovata tree's leaves turning brown so I'd like to know is this some kind of diseases which would require disposing the tree or something treatable due to nutrition deficiencies. I'm (deep) watering it only when the top 10cm of…
sinek
  • 105
  • 3
0
votes
2 answers

Getting rid of mealybugs in geranium/citronella?

I have a small citronella plant that used to look very leafy and green. All of a sudden, the plant started turning brown, and the leaves were dying. So I looked at it today, and found some white stuff in the roots. I've included some pictures. I…
rbhat
  • 1,869
  • 2
  • 14
  • 17
0
votes
1 answer

Can my chilli plant be saved?

I started observing some white patches on the soil and have been observing practically no growth on my plant. The leaves are also yellowing. I thought it could be root root so I thought of repotting. The soil is extremely wet, as expected. But I…
user3143203
  • 1
0
votes
2 answers

Can't bacteria enter the tree even after a proper prune cut?

I am now aware of the 3 cut method of pruning the tree to avoid damaging the bark. I am at the brink of loosing a tree because of bad pruning and not noticing that. Now this may sound a silly question but I can't understand this that when we cut the…
Syed Ahmed Jamil
  • 115
  • 5
0
votes
2 answers

The growth on my cacti has changed, and it wierd

I asked a question about the growth on my cacti earlier in the summer, however it's just acting weird. I initially thought it was a cacti fruit because it originated from a flower I tried to cross pollinate. But it's looking strange to me, and I'm…
Victoria hall
  • 21
  • 1
0
votes
0 answers

Leaves turning brown?

This is one of two indoor planta I bought a Walmart. It used to be nice, but then I noticed that the leaves are turning brown. It’s not overwatering because I bought two of them and the other doesn’t have this issue. What can it be? The last picture…
rbhat
  • 1,869
  • 2
  • 14
  • 17
0
votes
0 answers

HELP for diagnosis: Young pepper leaves are curling inward with no pests evident

I’ve been growing this plant hydroponically for about 1 month now and the new growth and some older leaves are curling inward. I suspected that it might be due to insects but there seems to be no trace or evidence of it. Just to make sure I sprayed…
Joseph San Juan
  • 1
0
votes
1 answer

What is this white web-like, mold-like thing on the plant

what is this web-like, mold-like thing on the base of the watch chain succulent plant? I searched in google for plant "molds" --> I saw powdery mildew. I think this is not that. It's more similar to a food mold. The plant has no insects, im sure of…
joble
  • 57
  • 1
  • 6
1 2 3
…
54
55