Questions tagged [diagnosis]
Gathering of information and facts to determine the root cause of a plant that is failing to thrive.
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How can I determine if cactus seedlings are dead?
I planted some notocactus seeds sometime in September and many have germinated since then. A few weeks ago, there was an incident where some of my succulents may have experienced frost and I can't be ...
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Could a spider be causing my orchids and cactus to die?
I had several small plants in the office (two orchids and a small cactus) that died. In a short time they began to dry.
Now a third orchid is beginning with similar symptoms and I wanted to ask what ...
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Will garlic cloves that are broken off the root 'plate' still grow?
I bought a bulb of organic garlic to try and grow.
While separating the cloves, a couple of them broke off that woody root 'plate'.
Will they still grow?
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How do I control blight in lantanas?
All my Lantanas have this blight on their leaves. What is causing it and how can I cure it?
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Why is my flowering crab stunted?
I have two flowering crab apples planted 2 yrs ago beside each other (20 ft apart). When they went in they were identical. However for two years the one has flourished and the other is anemic, such ...
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What is wrong with these pine trees?
There are a line of pine trees in my development, and two of them seem to have a disease. I was hoping someone could identify what is wrong with them. They seem to both have the same problem (part of ...
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Why do my Nepenthes N. Ventricosa tendrils dry out, and the N. Alata do not?
I have 2 pitcher plants in a single pot. The N. Alata sprouted around July (totally accidental, thought it was just a new stem since my ventrata has been in a bending position ever since I got it ...
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Is a fungus causing dead patches in my lawn?
Here is a picture of part of my lawn after this harsh summer. I am trying to figure out if this is lawn fungus or that the lawn literally burnt to death. Is it fungus that I should use the Scotts ...
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What are these coatings on strawberry stems?
My strawberry plants have some kind of coating on their stems. It looks like dirt, but I've removed it several times and it keeps coming back. It also follows the stem. It doesn't seem to harm the ...
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What are these brown patches on my acanthocereus tetragonus (fairy castle cactus)?
I've had this pair of fairy castle cacti for several years now, and they've done fairly well. However, I noticed today that they have developed brown patches over most of their stems and a few areas ...
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Holes on bottom side of tomato [duplicate]
Possible Duplicate:
Cracks on Bottom Side of Tomato
This may be related to my prior question about cracks on the bottom side of tomatoes. A few plants I'm growing have appeared with holes on the ...
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What are these white things on new leaves?
I have roselle planted. But I see these on the leaves. What are these?
Edit: Added closeups
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Cactus shoots drooping and turning olive
Hey Gardening & Landscaping SE, happy to be a new member! I am concerned for my cactus shoots and hope you are willing to help me out.
Short version:
My 3,5 months old cactus shoots are starting ...
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Why is my avocado plant dying with brown, decaying leaves?
A few years ago I grew an avacado plant from some seed and some time later leaves started turning brown and fell from the plant. I tried a lot, but landed on the thought that perhaps since it has ...
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pencil pine trees
Pencil pines are planted in a concrete border and right next to and below our retaining wall, they have grown very tall and the trunks have nearly outgrown the border. What damage will they cause to ...
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Birch trees with peeling bark and black area on trunks
I am wondering about my trees in our front yard. They seem to be peeling much more than others in the neighborhood and have black patches on the trunk. Any info on what I should do?
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What’s wrong with my mango tree?
The mangos sometimes fall off, but most of them develop like a split right in the middle where it’s curved (dry, then it falls off). This did not happen last year.
We water it 2-3 times a week, ...
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Why do some of my nectarines have missing skin and deeply damaged interior sections?
I have an approximately 4 ft tall baby nectarine tree. Some, but not all, of the fruits, have large areas of missing skin, and deeply damaged dark interior sections.
I live in zone 9b in Northern ...
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Orange seedling leaf browning, curling, slowed growth? Please help!
I am a 1st time citrus planter. I planted an orange seedling in some potting mix after it germinated. Within the 1st few wks there was pretty impressive growth of leaves and height. it is now about ...
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Flamingo (Anthurium) getting translucent heart shaped patches at the tip
I'm new to keeping plants. My 3 month old flamingo plant keeps getting these transparent spots right at the tip that slowly spreads and then become brown. Some time later the older leaves and all ...
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Why is my Eureka lemon tree losing leaves?
I have an Eureka lemon tree that was doing great over the winter. I repotted it with Miracle grow soil and it has slowly started to drop the leaves and it has a couple brownish colored limbs.
I again ...
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What is killing my bell peppers. Holes in leaves and blackened
I live in Montreal Québec and have planted bell peppers in a new raised bed. All was well for two weeks and then the leaves started to cup, develop holes and now are now starting to have black marks ...
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How can I help this plant?
This tiny plant needs help ! The previous tenant left it in the apartment. With a little search, I guess it's a crassula ovata. I live in France, what are the best recommendations do you have ? Is it ...
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Why is the bark falling off the base of my Corkscrew Willow's trunk?
I have a corkscrew willow, and the bark appears to be falling off around the base of its trunk. It seems as if something could be causing it, but I'm not sure as I haven't see anything obvious.
This ...
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What is causing the rotting/brown spots on my plum fruit?
I inherited a plum tree in my garden. I haven't yet been able to get a healthy looking plum from it. All the plums that turn to a ripe purple colour seem to have the following problem -
Can anyone ...
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What is happening to the leaves of my Ipomoea (Morning glory)?
What could be the reason to cause this discoloration of the leaves? The discolored parts you see here get thicker over the time until the green color disappears. It does not seem that the leaves dry ...
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Why does my Norfolk Island pine tree have brown needles and drooping branches?
My Norfolk Island pine is not doing so well; the needles are turning brown and the branches are drooping.
Why did this happen to my plant, and how can I cure it?
Click photos for full size
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Why is my palm tree not coming back to life?
It's been yellow like this since the winter and no amount of water can make it green. What's the problem here?
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How do I revive a shocked goji berry bush?
How can I revive a Goji berry bush after it has gone into shock. I moved the bush to a separate larger space and it was OK for the first and second day, but has continued to wilt from then.
Will I ...
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Why are my zucchini flowers closed?
Wondering why my zucchini flowers are closed? Should they be open? I know some flowers close at night and open during the day, however my flowers seem to be closed all the time.
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Why doesn't my fig tree produce fruit?
I have a fig tree but it hasn't had any fruits on it yet. I don't know which variety it is, I got it when it was only a few inches high. It's planted on a West facing wall of my bungalow, but like I ...
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Ants and white/gray/brown spores all over my gardenia
I planted my gardenia four or five months ago.
I noticed, recently, that (a) growth has stunted, and (b) there are ants all over the plant (base, leaves, etc.).
There are also white little dots (...
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Why does my tree have splitting bark, dripping sap, and dead branches?
Our builder planted this tree, and I have no idea what kind it is. The bark seems to split and a lot of sap runs out of the tree. Since I don't know what kind of tree this is, I haven't been able to ...
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What is this parasite / mushroom / sickness on my crabapple tree?
My crabapple tree is having a hard time. It's fighting Japanese beetles, spider mites and now this "thing" on some leaves. It starts by creating a red spot on the leaf and eventually there's some "...
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Aloe plant is browning and the leaves are thinning
I have recently received a small Aloe plant that I wasn't able to identify past the genus. It does not look healthy, some leaves have become brownish, and their ends thin, as if squeezed out.
The ...
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A visual reference to nutrient deficiencies in plants [closed]
Often times we cna look at the leaves of a plant to determine what nutrients are missing in the soil which the plants need. It would be nice to have a repository of images with accompanying ...
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Why is my Litchi plant getting brown leaves indoors?
I have a Litchi plant grown from a seed that doesn't seem too happy. It keeps growing new leaves, but each time a fresh set appears, the old ones turn brown.
It seems unable to carry more than two ...
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Why aren't my gooseberries thriving?
I bought some gooseberries and planted them in some self-watering containers. They did well for a few weeks but now one has lost all of its leaves and the other is losing some leaves, while other ...
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Funny looking new leaves
The new leaves on my plant appear healthy, but are coming out all jagged-y. Interested to know what’s happening?
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Is this plant beyond saving?
My company recently moved offices and we adopted some plants left by the previous inhabitants. While many were in bad shape, all but one are recovering quite well and I am not sure what to do with ...
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What to do with this Bromeliad?
What to do? I was given this Bromeliad, two links above. Please see what looks like white dust. A neighbor had quite a few plants on her porch, she gave me most of them because she didn't want to have ...
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How much seasonal, internal die-off of Arborvitae is natural and expected?
How much "natural" (i.e., without damaging factors) die-back from the inside of an (otherwise healthy) arborvitae hedge should be expected each year? Stated another way, would an arborvitae in ideal ...
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What are these lines on tomato leaves? [duplicate]
I have planted some tomatoes in my garden. The plants have started showing white lines as shown in the picture. Is this some disease? If yes, What kind of disease is this? Is it safe to eat tomatoes ...
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What is eating my Sweet Pepper plant?
I have an outdoor container garden in Southern Illinois. The pepper plant is on a raised level, surrounded by untouched tomatoes, carrots, spinach, onions, and squash. I have never seen anything like ...
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What kind of disease does my orange tree have?
Within the span of a few days, my Citrus sinensis started to display what looks like dandruff on the back of the leaves. As of now, many leaves have dried up and some have fallen on the ground. What ...
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Why is my pine tree turning brown?
I have 4 pine trees (not sure the type but they look like Christmas trees) in my back yard. They were planted at the end of May by the people that we bought the house from. One of them has turned ...
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How can I protect my citrus tree leaves from being eaten?
A couple of years ago I planted a lemon and a lime tree in my garden. They've been growing quite well but recently I noticed the leaves are patchy and holey - something has been eating them. What's ...
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What is causing a white rash to appear on the leaves of Pedilanthus tithymaloides?
My Lightning Bamboo Green (Pedilanthus tithymaloides, also called Euphorbia tithymaloides) feels well at my home; he already has a sprout.
So I can't explain what the white rash on the leaves are. It ...
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Why are some of my pumpkin plants wilting, and showing what looks like stem rot?
Up to this date we have had a healthy crop of about 500 flowering pumpkin plants, however, over the last 3 days we have lost maybe 20 of them. They will simply wilt over 24hrs and then die:
Closer ...
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What is the white residue spreading across my dracaena and how do I treat it?
I have a white residue spreading across my dracaena at home. I tried wiping it with wet sponge when it was on one leaf only but its come back and spreading across now 50% of the plant. Some of the ...
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