For questions about a plant that's failing to thrive, and where the cause is unknown.

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1
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1answer
109 views

Orchids not flowering

I have these orchids that I bought three years ago, and they are not flowering. At the beginning they almost died because of insufficient light in my home. I moved them next to an always-on artificial ...
3
votes
1answer
99 views

What could cause my coriander plant to start browning?

I grew coriander from seeds and the plant has done marvellously well until the last week or two where it appears to have stagnated a little. I noticed that some leaves have began to brown entirely, ...
5
votes
1answer
286 views

Is this mint fungus, or over/under watering my plant?

I have two mint plants that have grown without much fanfare. Occasionally I do notice the odd leaf with very dark brown edges, almost black. Some leaves also appear to have a powdery white substance ...
3
votes
1answer
79 views

Identify this Insect or Fungus. Possible Scale

I do not know the name of the plant and I have battled brown scales on my ficus before at my office. What is attacking this plant? Could it be some type of white scale? It is not mealybugs.
3
votes
1answer
105 views

How do I get my Jade plant to grow again? [closed]

We've recently moved, and while traveling to our new home all my house plants have turned brown. But importantly my jade has stopped growing. It is down to two leaves that are very loose in soil. I'm ...
7
votes
2answers
425 views

What is happening to the leaves of my avocado?

I have an avocado plant in my outdoors balcony. It's been growing nicely, but there are small brown dots/holes in the leaves for some time now. I don't see anything in the underside of the leaves, and ...
1
vote
2answers
190 views

Soil insects in potted gardenia

I was given a gardenia in a pot as a parting gift from a fellow house-sharer a few years ago. I keep it as a houseplant on a bedroom windowsill. It's looked increasingly sickly since then, but it's ...
1
vote
1answer
110 views

What are the black flying things and why do the leaves look like this?

These are photographs of my dahlia, marigold, and nasturtiums. I'm not sure what I'm doing wrong. But my plants are dying, and I'm unsure why. I've tried giving them a good wash previously, and ...
1
vote
1answer
55 views

Cause of plants dying

I am in the UK, midlands. Have these seedlings in a greenhouse and they were doing quite well. Almost getting ready to stick them in the ground for winter. Almost overnight they have died. Can anyone ...
4
votes
1answer
180 views

What is wrong with my lemon tree? [duplicate]

Below is a picture of my lemon tree, which now have some sticky web infection. See left corner on the first picture. On the second picture is a close up of something that is being spread from the ...
1
vote
1answer
246 views

How to remedy die-off of lower and middle branches on my plum tree?

Introduction I have a plum tree that is not doing well. It is situated alongside a dirt road which gets regular (but not heavy) traffic. There's not a lot of wind, and the sun shines on it for about ...
1
vote
1answer
55 views

Why did our cactus die?

We had a cactus named eddy and he died, he had a stretched body with a sphere on top as a head and two little spheres attached to it like eyes. He looked like Echinocereus triglochidiatus but with ...
4
votes
2answers
438 views

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 ...
2
votes
1answer
62 views

What are the ideal conditions for Lobelia cardinalis

I have been trying to attract hummingbirds for a few years by planting flowers that they like. Two of these are Lobelia cardinalis and Lobelia siphilitica. They are both said to: be perennial need ...
3
votes
1answer
2k views

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 ...
6
votes
1answer
90 views

Hard potatoes harvested

First time grower in Michigan, partial shade and probably not the best soil. The red potatoes I got out first were very hard. Why? What can I do to prevent this with the rest of them before they ...
2
votes
1answer
73 views

Why doesn't my night-blooming Cereus produce flowers?

I have had a night-blooming Cereus for several years and it has yet to bloom. A friend has one and it blooms no problem. This plant is indoors and keeps growing, but no blooms. What can I do to make ...
6
votes
1answer
216 views

Why are my tomato fruits developing black, mushy spots before they can ripen?

My tomato fruits are going bad before they have a chance to go from green to red. Can anything be done this year to the plants I have? I have same problem with every new fruit.
5
votes
1answer
534 views

Why won't my mulberry tree set fruit?

I have a mulberry tree which has been in my garden for 4 years. I bought it at a market and I think it was a seedling. It has grown to a height of 4 metres and is thriving. Each year it has flowered ...
3
votes
1answer
408 views

What is causing my lavender's leaves to turn grey and wizen?

I am trying to grow a lavender plant on the windowsill of my apartment in Brooklyn. I got this more succulent lavender after some more delicate french lavender had died on the same sill. This plant ...
1
vote
1answer
70 views

Does it look like a vine borer caused this damage to my zucchini?

After reading the accepted answer on the question "Is something wrong with my zucchini plant?", I've come to the conclusion that it is in fact a vine borer which has invaded my zucchini. Based on the ...
1
vote
1answer
233 views

What is causing my Gladiolus blooms to open withered?

My glads are blooming but the majority of the flowers are opening withered like they are already fading. They are wrinkled with grayish discoloring. The blooms pictured below are newly opened or ...
4
votes
1answer
323 views

Why are my raspberry's leaves curling up?

Last fall I planted 4 raspberry plants, two Heritage and two Killarney. Recently the two Heritage have had a handful of leaves curl up and fold in half so you only see the bottom of the leaf which ...
2
votes
2answers
3k views

Why is my Norfolk Island pine not doing well?

My Norfolk Island pine is not doing so well: the needles are turning brown and the branches are drooping. See photos below. Why did this happen to my plant, and how can I cure it? Click photo for ...
1
vote
1answer
165 views

Why have some of the leaves on my cherry tree sapling suddenly gone very pale?

Several months ago, I planted three cherry trees, one in the front garden, one in the back and one in a container in the house. The one in the front has really struggled, whereas, predictably, the one ...
4
votes
2answers
321 views

Why is my chili plant drying out when the soil is moist?

What is happening to my chili plant? The soil is moist but the leaves are drying out. I have the plant in a pot in the bathroom with plenty of light from the skylight. There are plenty of flowers but ...
2
votes
1answer
95 views

Do I have a diseased clematis?

Can anyone identify what is wrong with my clematis? The leaves are browning and there looks to be a mold or fur growing on it.
1
vote
1answer
97 views

How do I deal with a pine tree infestation?

My pine tree is heavily infested with some kind of white stuff. It looks like some kind of scales or white powder that is covering all the pine needles. Anyone know how to deal with this without ...
3
votes
3answers
3k views

What are some reasons why a blueberry bush's leaves turn yellow?

I have two types of Southern Highbush blueberry bushes, Misty and O'Neal. This spring, I noticed that their leaves are yellowing as shown in the photos below: Misty: O'Neal: They are in 100% peat ...
3
votes
4answers
1k views

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 ...
0
votes
2answers
269 views

What are these sphere-like things on my Camellia azalea tree?

There's about 3 of these sphere things on my Camellia azalea tree/shrub. Can anyone tell me what they are? Are they harmful? And also the leaves are browning at the tips and falling... Is that due to ...
2
votes
1answer
410 views

What are the growing conditions for Camellia azalea? Especially it's water needs

I have bought this rare breed of Camellia, the Camellia azalea. It's originally from China I think and I have mixed in some coco husk to allow for good water flow and prevent clogging the soil with ...
2
votes
1answer
525 views

My Air Plant (Kalanchoe Pinnata) is attacked, how do I save it?

My Air Plant (Kalanchoe Pinnata) is attacked by little green worm like insects which are eating its leaves. Slowly one by one, all of the leaves are dropped by the plant, now it is left with just ...
2
votes
0answers
122 views

Mexican Avocado tree grown indoors 1½ years old has round spots on leaves [closed]

I have a Mexican Avocado tree growing indoors in the winter (we live in the Northeast) outdoors in the summer. It has developed white round spots and the edges to the inside are becoming brown and the ...
1
vote
1answer
161 views

Box-blight or just the effects of winter

I have some small box-trees which start to have some yellow leaves on the top of some branches. Is this the start of box-blight or just the effects of winter. We have some low temperatures (down to -5 ...
3
votes
2answers
713 views

What's wrong with my chili bush?

I've had a chili bush I grew from seed for about a year now, and it's finally growing into something resembling an actual bush (rather than just a seedling) and it was going great until the last few ...
1
vote
1answer
157 views

Can we save a dying chili pepper plant by grafting?

I have a dying Jalapeno plant and I want to save the fruits that are already growing, can I use grafting procedure to save it from dying using a well grown Jalapeno plant.
2
votes
1answer
118 views

Should I cut leafless stem off of plant?

I have a ( Indoor ) plant that has been drooping lately and its stems are long and touch the floor. I'm not sure if the stems are supposed to be stiff, or if that is just the way the plant is supposed ...
3
votes
1answer
635 views

Why are my aloe's leaves bent and drying up, and what can I do to help it grow?

My aloe plant is not growing right. I've had it for about a year and the leaves are bending and drying up. Please help me because I don't want it to die, they are very beautiful plants. Can I ...
7
votes
2answers
169 views

cultivating a cactus from cutting

I've recently gotten a san pedro (Echinopsis pachanoi) cutting as a gift. I'm trying to take care of it as good as possible, but I'm not sure if I'm doing it the right way. The situation is: the ...
3
votes
2answers
5k views

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 ...
4
votes
3answers
2k views

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 ...
3
votes
2answers
219 views

What is this houseplant, and what can I do to keep it from going downhill?

Looking for help with this plant we recently got. Not much of a plant person, but struggling with this one in particular. Don't know what it is..but I think it's slowly going. I think the soil is ...
5
votes
4answers
305 views

Second opinion: Arborist says tree needs to go

I just had an arborist look at a red maple with a long bark split in my yard. His diagnosis was that it was struck by lightning (there was a close lightning strike a few months ago) and the tree needs ...
6
votes
1answer
951 views

Why is my cactus purple?

This has been going on for a while (about a year), one of my cacti has turned purple. I've just replanted it after its pot fell and broke (no, it did not spend the year on the ground). What is the ...
5
votes
1answer
2k views

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 ...
6
votes
1answer
575 views

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 ...
1
vote
1answer
3k views

citrus, curled leaves

Is anyone able to identify this disease / pest? We have this on several citrus of different types including an orange, grapefruit, lime, and a mandarin orange. My first thought was that it could ...
1
vote
1answer
894 views

How can I make my Moringa Oleifera happy again?

I'm having some problems with my Moringa Oleifera. It's about 6 months old and is placed in a sunny window (oriented south), in southern Sweden. It's been growing well and looked healthy until ...
4
votes
2answers
6k views

Why do some of my zucchini shrivel and turn yellow at the blossom end?

Every year, I grow a zucchini plant, and every year a few of the zucchini stop growing once they reach a few inches in length, then turn yellow from the blossom end: Left to themselves, they will ...