Gardening and Landscaping Stack Exchange
Gardening and Landscaping Stack Exchange

Questions tagged [diagnosis]

Gathering of information and facts to determine the root cause of a plant that is failing to thrive.

For questions about a plant that's failing to thrive, and where the cause is unknown (it could be disease, pest, or environmental). Ideally, the fullest possible description of the symptoms and growing conditions should be included, as well as close-up pictures of the affected part and other parts of the plant.

Model Questions

These questions are good examples of how to ask an effective diagnosis question. Note the photos and descriptions as well as the descriptive title.

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What causes cucumber leaves to turn yellow, brown, wilt, die, and the plants to stop producing?

Every year it seems my cukes will go gang busters then suddenly the leaves turn yellow (starting with yellow spots), then turn brown, wilt and slowly die off. This all happens from the root crown and works its way out. I have pictures of early…
Bill
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Is my lemon tree dying?

I'm on my 2nd lemon tree. I live in Melbourne, Australia and lemon trees are the norm around here. I suspect my first one died as it outgrew its pot, which was half the size of this one. I'm currently renting, so need to keep it in a pot until I…
jakc
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Why is my new Acer tree dying?

I recently bought a small red Acer and moved it into a more permanent pot. It's about 2 1/2 feet tall and since I've moved it, the leaves have started to brown and shrivel like a dead leaf would in autumn. The pot is about 1 foot in diameter and 2…
Greg B
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How can I revive wilted water basil plants?

I bought these basil plants from the store. They looked a little droopy and wilting. They came with several bunches and they were half off and discounted because they've been there in the store so long. The instructions on the bag indicated to put…
chrisjlee
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Why won't my pepper grow?

For the past three years (since I started gardening) I've tried with no luck to grow peppers. Two years ago I was able to grow a few pepper plants (out of many) but the peppers did not get very big. I've tried almost every variety of both seed and…
Fatmuemoo
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Odd pumpkin flower

This is something we have never seen. My neighbour has a pumpkin plant which recently started flowering. They were all male flowers till now. But those flowers were all green, not normal yellow flowers. Has anyone experienced this? Will this…
Spectra
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Why did the stem suddenly weaken in my oriental poppy?

I have an oriental poppy 'Patty's Plum' growing in new potting compost in a pot with good drainage. It sits in full sun, and I water it as needed in the recent dry weather. I purchased it from a nursery in May so this is the first season I've had…
Shanna
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Why are my persimmons black beneath the hull?

My mother's persimmon tree is producing fruit that tastes good, but the area at the top beneath the leaves (the hull/calyx) is black. The local nursery suggested the fruit may be getting too much sunlight, but even fruits that have grown under the…
Bernard Chen
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Why does my lemon tree have black scabs on the lemons and yellow spots on the leaves?

We've recently moved to a new house which has a lemon tree in the backyard in dire need of some TLC -- but we're not quite sure what exactly is wrong with it. Two primary problems, which may or may not be related: 1) Lemons are covered to varying…
lambshaanxy
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Why does my blueberry bush have brown/scorched leaves?

I recently purchased a dwarf Northsky blueberry bush from a mail order company. When I recieved it, roughly 15-20% of its leaves had the appearance of being burned or scorched; the bad leaves were about 50% brown and curled, like they were burned or…
Ashley Grenon
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Why are the leaves on my mango tree turning brown and drying out?

I grew a mango tree last summer from seed in a pot. In the beginning it was extremely healthy looking and fast-growing. When the summer was over, as it gets very cold here in Canada, I took it indoors and placed it in the window frame. I fertilized…
user3643087
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Why does my sweet potato have stunted growth with wide, flattened stems and dense leaves?

My sweet potato plant has a severely widened and flattened stem and grows like a band, with dense leaves and stunted growth. What is wrong with it?
J. Musser
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What is this tree-like houseplant with long thin leaves? Is it sick?

Can somebody identify this plant? I received it for my Dad's passing and it isn't doing so well. I just moved it and it may be in shock.
R.Humphries
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Why are my aloe leaves turning white and brown?

I have had this plant of aloe for years, and it has always given me great satisfaction. Easy to take care of, I had separated it into different pots but now decided to keep it all together into a large one - and it has been a great idea. It…
laureapresa
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Why does my pepper plant have yellowing, drying and curling leaves?

One of my pepper plants has so far suffered from pests, blossom end rot and odd skin blemishes and unfortunately the plant is now taking a turn for the worse and looking rather unhealthy. The leaves are drying out and curling along some edges, and…
DMA57361
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