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

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6
votes
2answers
226 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
1answer
42 views

Why are my Aglaonema's leaves turning yellow rapidly?

I have an Aglaonema (also commonly known as a Chinese Evergreen) at my desk at work. Over the past month or so, its leaves have been yellowing and dying rapidly. This is how it looked today, a Monday; ...
2
votes
2answers
40 views

How can you get orchids to bloom again?

My aunt has several varieties of store-bought orchids which were blooming when she bought them last spring. However, after the blooms fell off, they did not bloom again. Throughout the summer she ...
4
votes
1answer
54 views

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 ...
2
votes
1answer
84 views

How do I get my Jade plant to grow again?

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 ...
2
votes
1answer
58 views

Raspberry disease

My Raspberry has got some disease. Please see the picture. Can anyone advise me on what is this and how to treat it?
9
votes
3answers
3k views

Why does my cilantro have thin leaves? Why is my parsley not growing? When will they be ready for harvest?

My cilantro (planted outside, full sun from about 11am to 6pm) doesn't have the broad leaves that I see when I buy it in the store. I planted it in May. When should I expect it ready for harvesting? ...
2
votes
1answer
80 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
59 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, ...
6
votes
3answers
10k views

Why has our lucky bamboo turned yellow?

Our lucky bamboo has turned yellow in a very short time, after we've had it for almost 2 years. We've trimmed all yellow leaves, and changed the pebble to clean the green algae - what else can be ...
7
votes
4answers
5k views

My indoor plant has an orange mold-like substance growing on it and has tiny white bugs. How can I remove it?

I have my very first plant in my cube and it seems to be doing just fine. However, there is an orange mold-like substance growing on the top of the soil, and I can see a few tiny white bugs crawling ...
1
vote
2answers
114 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 ...
2
votes
1answer
57 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.
4
votes
2answers
217 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 ...
4
votes
2answers
212 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 ...
1
vote
1answer
52 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
45 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 ...
2
votes
2answers
391 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 ...
4
votes
1answer
94 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
74 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 ...
10
votes
1answer
3k views

Schefflera arboricola - where to place it? Too much water?

I have a Schefflera Arboricola (also known as Strahlenaralie). I've placed it in my office so that it receives some sunshine, but not directly - I've put it behind a plastic plant (on the right on the ...
10
votes
1answer
9k views

What causes black spots on my apples?

I've got an apple tree in the garden which has produced a good crop, but most of the apples are covered in black spots: What is this? It seems to be some sort of fungus, but what's the best way to ...
16
votes
2answers
6k views

Why did my jalapeños turn black?

Last year I grew jalapeños. The fruits were tiny, but I was able to harvest a few handfuls. I noticed that many of them started to turn black on the plant. They were still edible, and they weren't ...
1
vote
1answer
40 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 ...
8
votes
1answer
2k views

Why isn't my lemon tree growing?

We planted a lemon tree five and a half years ago. Today it's about the exact same size as ever. I've tried using citrus fertilizer, but to no avail. We've had dry summers and wet summers, but ...
2
votes
1answer
52 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
695 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
62 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 ...
6
votes
1answer
559 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
2answers
6k views

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 ...
5
votes
1answer
119 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.
10
votes
4answers
3k views

Japanese box hedge failing to thrive. What to do?

I have a Japanese box hedge which is not exactly dying, but is definitely failing to thrive. When I moved in (5 years ago) it was looking much better. So it's not about the location, but that the ...
5
votes
1answer
192 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 ...
13
votes
4answers
5k views

Strawberry not producing any fruit

I have a plant I bought that was started from Home Depot. Unfortunately it hasn't grown any fruit, even after a whole year. Around May this year (my second year), it produced two small flowers and it ...
1
vote
1answer
59 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 ...
9
votes
3answers
4k views

Why does my lime tree drop its fruit early?

I have a kumquat and a Mexican (or Key) lime tree in pots right next to each other. The kumquat has been flowing and fruiting like a champ nearly as long as I've owned it. The lime hasn't yet ...
13
votes
3answers
7k views

why does my grass have bright green patches?

My yard is about 6 years old (new house). When we put the yard in, the seed was equal parts Fescue, Rye, and Kentucky Bluegrass. We live in NE Ohio. About 2-3 years ago, we started getting these ...
1
vote
1answer
103 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 ...
3
votes
3answers
2k 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 ...
4
votes
1answer
227 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 ...
1
vote
1answer
117 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 ...
2
votes
2answers
1k 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 ...
2
votes
1answer
61 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.
9
votes
1answer
348 views

What causes spruce branches to drop their needles?

I have a spruce tree that has a problem. Every year, some branches suddenly drop all of their green needles and die. I would like to prevent this, but I don't know what the cause is. What causes this ...
5
votes
4answers
269 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 ...
1
vote
1answer
92 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 ...
5
votes
1answer
247 views

Are large strawberries supposed to be fan-shaped?

My new Gurney's Whopper strawberries are growing large as advertised, but are an odd fan shape. Is this normal or am I doing something wrong? I have here a picture of Gurney's Whopper strawberries ...
2
votes
3answers
601 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 ...
6
votes
2answers
140 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 ...
0
votes
2answers
178 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 ...