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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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34 votes
2 answers
3k views

Why did my carrots split in a way that looks like legs?

This is the first year I've grown carrots. What gave them legs? I have a theory that the seedlings merged together. I don't know if that is just silly or if carrots just naturally grow like this.
Fatmuemoo's user avatar
  • 1,389
28 votes
2 answers
1k views

How do I help my kitchen window herb garden thrive?

For the last couple of years, I've been nursing along a sort of kitchen window herb garden consisting of cilantro, parsley, basil and chives. What I've done is bought live herb plants at our local ...
Jon Ericson's user avatar
  • 3,026
27 votes
3 answers
70k views

Why has my mint plant gone all woody/sparse/stringy?

I grew my mint plant in a pot to contain the roots, and that has worked well for 3-4 months. However, the plant is not really producing fresh leaves now. Is there anything I can do?
Dan's user avatar
  • 4,361
25 votes
2 answers
14k views

What is this green-ish thing inside the orange?

So, inside this orange, there is this "alien" thing. Before I want to say that this is GMO, I need a reasonable explanation about this. What is this thing? (Warning: potentially phobia-...
Zlatan Ibrahimpasic's user avatar
24 votes
4 answers
60k 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 ...
bstpierre's user avatar
  • 41.7k
24 votes
3 answers
18k views

Insect infestation on my pepper plant, what do I do?

I have spotted that one - and only one - of my peppers plants has a number of small black flies of some type hanging around the soil. And while writing this I've just spotted that one (and only one!) ...
DMA57361's user avatar
  • 2,695
23 votes
7 answers
74k views

Why is an indoor pepper plant flowering but not producing fruit?

One of my pepper plants has started to flower, and the petals are falling off to reveal a pepper growing from that stem - well, at least the first two have, and the other flowers seem to be bulging ...
DMA57361's user avatar
  • 2,695
23 votes
4 answers
39k views

What do purple tomato leaves mean?

Sometimes the leaves of the tomato seedlings we grow in pots gain a purplish shade on the bottom; the plants themselves (don't know if this is a coincidence) also seem to turn out stockier, shorter, ...
Vervious's user avatar
  • 1,497
21 votes
6 answers
58k 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 done?...
Kobi's user avatar
  • 405
21 votes
6 answers
133k 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 ...
Mike Ohlsen's user avatar
21 votes
1 answer
15k views

What is my citrus deficiency, based on leaf appearance? And how to treat?

In the images of my citrus below, you can see the leaves are paling towards the edges. What is the deficiency and how can I fix it? The soil is clay-dominated with some sand and coloured red, ...
Lisa's user avatar
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20 votes
2 answers
1k views

Why don't my radishes swell up?

When I grow radishes, I find that some of them don't swell up to form the globe I expect; instead the root stays thin. These are planted in the same bed and at the same time as radishes that do swell....
Niall C.'s user avatar
  • 7,209
20 votes
2 answers
13k views

Why are my apples rotting on the tree?

I recently bought a home that has an apple tree in the backyard. I don't know much about apples (or gardening in general for that matter) and I need help with a couple of things. I'd like some help ...
brady's user avatar
  • 301
19 votes
14 answers
68k views

How do I get rid of pill bugs in my vegetable garden (or is it even the problem)?

I have had multiple plants in my vegetable garden that have seemed to just vanish from the garden over the period of about a week. I have notice pill bugs eating the remains of the plants. They seem ...
Kellenjb's user avatar
  • 1,262
18 votes
4 answers
18k views

Why hasn't my strawberry plant produced 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 ...
chrisjlee's user avatar
  • 2,177
18 votes
1 answer
4k views

What's growing on my tomatoes?

My tomato plants are covered with tiny, pill-like growths on their stems, pictured below. They're about 1mm wide and 3-4mm long, and they're widespread on both stems and branches. I'm also getting an ...
JSBձոգչ's user avatar
  • 1,766
18 votes
2 answers
8k views

Why did my orange bell pepper smell of ammonia?

A week ago I harvested an orange Bell pepper from my garden. It was still halfway green, so I put it on our kitchen counter to ripen. When I finally cut it open for a salad after a week of ripening, ...
Caffeine Coma's user avatar
18 votes
1 answer
46k 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 ...
growse's user avatar
  • 283
17 votes
4 answers
22k views

How should a lemon tree with yellowing leaves, peeling bark, and small fruit be saved?

Our lovely lemon tree is in trouble... We live in Northern California. Starting mid-last summer our tree began yellowing. We've called an arborist out to the house but the advice has been pretty ...
Micah Siegel's user avatar
17 votes
3 answers
40k 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? ...
Brian's user avatar
  • 1,093
17 votes
4 answers
22k 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 ...
WW01's user avatar
  • 694
17 votes
3 answers
8k views

Why is my pepper plant dying?

I planted a capsicum/pepper plant about 5 months back and it's been growing well and producing a few fruits. I live in Melbourne, Australia and it's now Winter, and the plant now has lots of fruit, ...
jakc's user avatar
  • 609
17 votes
2 answers
3k views

What are these cracks on the bottom sides of my tomatoes?

Recently I noticed the following cracks and small holes on the bottom side of my better boy tomoato plants. I am in Maryland and we have not had a lot of rain the past month however I regularly try ...
Jakkwylde's user avatar
  • 1,012
17 votes
3 answers
21k 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 ...
Jon Ericson's user avatar
  • 3,026
17 votes
1 answer
2k views

What are these red cocoons in my trees leaves?

The tree In my garden as lots of red cocoons on its leaves, I assume these are insects, do I need to be concerned or are they harmless?
Dan's user avatar
  • 4,361
17 votes
2 answers
12k views

Is there anything wrong with allowing moss to grow around herbs?

I've started up a pot of Basil sprouts indoors under a lamp, and it seems like some moss is beginning to grow around them. Is there anything wrong with having moss in the same pot? Any problems with ...
John Walthour's user avatar
17 votes
1 answer
2k views

tomato plant rotting from the inside -- what's going on?

I have a hydroponic garden in a greenhouse in my yard. Everything was going just great until today when I noticed that one of the 7 or so tomato plants (the biggest one in fact) was looking rather ...
asbestossupply's user avatar
17 votes
1 answer
590 views

Why didn't my forsythia cuttings root?

In May, I took some greenwood forsythia cuttings, dipped them in a hormone rooting powder and planted them in rooting mix. The mix was kept moist all year. I had thought they had rooted because they ...
J. Musser's user avatar
  • 51.8k
16 votes
6 answers
102k 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 ...
jjnguy's user avatar
  • 263
16 votes
2 answers
54k views

Why did my pepper plants suddenly shrivel?

I've been growing pepper and chili plants in a greenhouse on my balcony since March and they have been growing strong. However, I started a new job last week and have not had the time to tend to them. ...
Michael Allen's user avatar
16 votes
3 answers
20k views

How to stop my courgettes (zucchini) rotting?

I've tried growing courgettes (zucchini) for the first time this year and the plants have been delightfully easy to grow. (For reference, I'm in NE England, UK, btw.) However, many of the fruits ...
Mal Ross's user avatar
  • 959
16 votes
1 answer
14k views

What does it mean if my tomato leaves are curling?

The leaves on my tomato plants are curling up and I'm wondering if they are getting enough water. The leaves are still green and there are tomatoes on the plant, but I didn't know if that was a sign ...
Austin's user avatar
  • 263
16 votes
2 answers
43k 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 ...
Rick Measham's user avatar
16 votes
1 answer
8k views

Is my Schefflera arboricola getting the right amount of light and water?

I have a Schefflera arboricola (also known as Strahlenaralie in German). 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 ...
axel22's user avatar
  • 627
16 votes
1 answer
6k views

Some of my ferns have brown spots on the tips of their leaves. What causes that?

I have a few ferns with long pointed leaves, and their tips have turned brown. The plant is otherwise healthy, and is actively growing. What is causing that? Should I worry about it?
whatsisname's user avatar
16 votes
1 answer
3k views

Strawberry plants brown & brittle - is it disease, climate conditions, or bugs?

Most of my strawberry plants have leaves that first turned red, then brown and brittle. Leaves often snap off when harvesting what berries remain after the critters get them. I'm trying to balance ...
Chuck's user avatar
  • 742
15 votes
6 answers
100k views

How do I encourage morning glories to bloom?

I know that many of you will find this unbelievable -- but my morning glories did not bloom this year. For those of you that live where morning glories are a perenial that borders on "weed" this ...
Joseph Barisonzi's user avatar
15 votes
2 answers
6k views

Why are there kinks in my aloe vera leaves?

On several of my aloe vera plants, the leaves suddenly became kinked. The leaf would get very thin in a spot and bend over. It starts near the tip and is most noticeable on older leaves. What is ...
J. Musser's user avatar
  • 51.8k
15 votes
1 answer
2k views

What's causing my potatoes to wilt?

I'm growing yukon gold potatoes. They've been growing like gangbusters, but this week I noticed some leaf yellowing and wilt on at least 3 plants out of 9. Why are they yellowing? Is it anything to ...
Caffeine Coma's user avatar
15 votes
1 answer
15k views

Why are my peach leaves turning orange?

During summer, the leaves on my peach tree turn an orange-green shade. Is this normal? Is this a response to heat stress, drought, or something else (e.g. mineral deficiency during high heat ...
winwaed's user avatar
  • 20.4k
14 votes
3 answers
6k views

Why have my tomato leaves started yellowing at the base?

One of my tomato plants (Better Boys if that matters) has a few leaves that have started yellowing on the lower branches. Not sure if they aren't getting enough water, or if they are diseased or what. ...
wax eagle's user avatar
  • 5,188
14 votes
2 answers
2k views

What can cause the leaves of a rose bush to turn black and fall off?

I bought a small rose bush on Mother's Day this year and planted it in my flower garden. The area probably has too much shade for a full sun plant, but I don't think that is the issue here. Shortly ...
wax eagle's user avatar
  • 5,188
14 votes
2 answers
36k views

Why are my pumpkins dying? Is it the heat?

I'm getting plenty of flowers, and about half of them produce a tiny little pumpkin. However, after only a couple of days, the pumpkins begin to turn black and shrivel up. It is 104-degrees during ...
Brian Webster's user avatar
14 votes
2 answers
470 views

What is causing this damage on my apple tree?

UPDATE On inspecting all the other branches, I found one of the branches in the following state. It shows the bark beginning to fall off the tip, explaining how the other branches have developed.I cut ...
Nic's user avatar
  • 1,043
14 votes
1 answer
6k views

How do I prevent my berry leaves from getting scorched in the sun?

Raspberries are plants that require good exposure to sun. However, my black-raspberry plant has been getting scorched of late. Typical signs of sun-scorching are when the older leaves start drying out ...
user avatar
13 votes
2 answers
7k views

Why are the blooms dropping off my zucchini without fruiting?

As you can see from the pictures the blooms look as if they just release themselves and leave the beheaded stalk. There doesn't seem to be any fruit growing at all. Is there something that I am doing ...
DiBobble's user avatar
  • 133
13 votes
3 answers
2k views

Cherry sapling has orange dots on its leaves and the tips are wilting. What could be wrong?

I recently planted a cherry tree sapling about two weeks ago. It's about a handspan high, and has four leaves. I noticed that it had orange spots on one of the leaves when I planted it. Click on the ...
ashes999's user avatar
  • 2,313
13 votes
3 answers
11k views

Why did my tulips die?

I planted three bulbs in a small vase, around 20 cm diameter, without a drainage hole. I planted them in November, outside under a roof, facing East, and watered them when the soil was dry. I'm in ...
Stefano Borini's user avatar
13 votes
2 answers
33k views

My basil had a shock after transplanting. What did I do wrong?

First a little backstory: I bought the basil at a supermarket, where it came in a small plastic vase. I kept it in this vase for three weeks. During these three weeks, I did the following: kept it at ...
Stefano Borini's user avatar
13 votes
2 answers
13k views

Why are my squash's leaves drooping?

This past growing season (2011) I was growing squash. Often I would find that the leaves had drooped (lost rigidity). Watering the plant seemed to help; but I'm not sure if there is a causal link ...
Om Patange's user avatar
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