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
0 answers

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 any way. Do you know why is it happening and how I…
Michał Pająk
  • 1
0
votes
0 answers

Hydroponic nutrient solution filtration

I am looking to build a small-scale hydroponic farm; lettuce/tomatoes/etc, and am now looking into a filtration system for my re-circulating reservoir. I have previously run into pathogen issues within my system in Florida, so for this up-scaled…
drew
  • 1
0
votes
1 answer

Plants that absorb carbon monooxide and other drainage gases

I have drainage pits around the house, sometimes the drainage smells comes from the pit but they are odourless gases such as carbon monoxide which can be harmful and there are other toxic gases such as Hydrogen sulphide , Nitrogen,Ammonia…
Amogam
  • 117
  • 6
0
votes
1 answer

Could dead patches in my lawn be caused by blowing too many clippings into the same area?

I mow my lawn but I pay a company to fertilize and treat weeds. The company is telling me I have something called large patch and pythium. They’re telling me it’s going to cost $130 per treatment and about 6 treatments to fix my problem. There’s…
razorhawgfan
  • 1
0
votes
0 answers

Palm tree rot , bark missing

I have a queen palm with the same issue . Bark missing and tree rot . How can this be fixed?
Mike
  • 1
0
votes
0 answers

What this peony is suffering from?

Does anyone know what this peony is suffering from? The leaves aren't wilted, they are rigid and rubbery and have twisted themselves into tight, deformed shapes. The neighbouring peonies appear healthy and in fact the same peony was healthy last…
Tim
  • 133
  • 2
0
votes
0 answers

Two potatoes in container are bad -- are the remaining potatoes affected?

I'm growing potatoes in containers. I just turned out one container to harvest the potatoes. Two of the potatoes were gelatinous and foul, as in the photo: Update: these weren't the seed potatoes, which I did find in the container. However, the…
crmdgn
  • 807
  • 5
  • 9
0
votes
1 answer

Parts of pepper leaf became watery in after a cold and wet day

It has been cold(50F) and rained quiet a bit today and yesterday. One of my pepper plant's leaf have become "watery". parts of the leaf is wet and soft to the touch and slightly transparent, like a paper towel that is soaked in water. Does anyone…
zforest20
  • 3
  • 2
0
votes
1 answer

Are these potted mint plants healthy?

These are some mint plants (Mentha arvensis) that have been grown from grocery store edible mint stems planted in a 60~40 ratio of cocopeat-perlite-compost and garden soil. The new leaves around the meristems seem to be too yellow though. This is…
Sam
  • 455
  • 2
  • 10
0
votes
0 answers

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 preceded by necrotic black spots. This must be caused by…
Maurice
  • 339
  • 1
  • 8
0
votes
1 answer

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 plant dying? Could you explain me what is the…
Idris Buhari
  • 23
  • 3
0
votes
0 answers

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 cotyledon leaves, but I did notice some true…
JoshuaTree
  • 57
  • 1
  • 6
0
votes
1 answer

Why do my roses look dry, brown and full of holes?

I've been using Bayer's BioAdvance Rose and Flower care to feed and prevent insects/diseases. It did ok last season, not wonderful, but ok. This season my rose bushes are dry, they have brown/rust spots and holes all over. I'm carefully and…
Rick
  • 3
  • 1
0
votes
0 answers

Chilli leaves are dying + misformed

Some of my young chilli plants leaves are very misformed and some have dying ends. This seems to be happening at some level to all of them, any ideas what it is? I sprayed them with pesticide at some point which could be a cause but is there any…
MrTippage
  • 1
0
votes
0 answers

Philodandron dying - black goo

My philodandron is slowly dying (I created a previous post here, but I lost the access to the account for some reason :/) In the other post I showed how it went from a nice big plant to losing all its leaves: a) When we got it b) A few weeks…
Paco
  • 11
  • 1
1 2 3
…
54 55