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

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16
votes
1answer
5k 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?
9
votes
1answer
2k 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 ...
12
votes
2answers
892 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, ...
9
votes
1answer
509 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 ...
16
votes
2answers
7k 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 ...
10
votes
1answer
10k 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 ...
7
votes
4answers
6k 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 ...
5
votes
1answer
2k views

What is the cause of the dead spots in my lilac bush?

Last year, we built a home and got a Lilac as part of our landscaping package. The landscaping was planted in August, so it's almost made it a full year now. In June, we started to see dead spots ...
9
votes
2answers
532 views

What is this brown, shell-like thing growing on the stalk of my avocado plant?

Could you please help identifying this brown shell-like thing growing on the stalk of my avocado plant? There are several of these. It looks like a little shell (with the appearance of a ...
8
votes
4answers
19k 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 ...
14
votes
1answer
149 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 ...
7
votes
1answer
791 views

My flat leaf parsley has stunted growth and pale red leaves. What could be wrong?

My flat leaf parsley is not looking very healthy; the growth seems stunted, and the leaves are starting to turn a pale red. What should I do to revive it?
6
votes
1answer
447 views

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 ...
9
votes
1answer
3k 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 ...
11
votes
3answers
4k 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? ...
12
votes
4answers
7k 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 ...
8
votes
1answer
1k views

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 ...
10
votes
3answers
1k 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, ...
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 ...
10
votes
2answers
4k 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 ...
7
votes
2answers
1k views

A few leaves on my peppers are showing multiple small holes, should I be worried?

I've noticed that a small number of the leaves on my pepper plants are showing several tiny holes through their surface. These are focused towards the stem of the leaf, and not so much towards the ...
7
votes
1answer
389 views

What could be causing rot to appear on the skin of my bell peppers?

I have a set of four bell pepper plants that I am growing in 12" containers in my backyard. They've been growing alright until the fruits on the plants have started to develop what appears to be a rot ...
4
votes
2answers
209 views

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 ...
10
votes
3answers
3k 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!) ...
14
votes
1answer
4k 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, ...
7
votes
2answers
2k views

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 ...
11
votes
1answer
2k views

How do I get rid of this white stuff on my pumpkin leaves?

The leaves on my pumpkin plants have what looks like a white mold growing on them. What is this? If it is harmful, how do I treat it?
10
votes
1answer
4k 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 ...
8
votes
1answer
354 views

What insect eats petals and what can I do to kill it?

My geraniums loved being outside the front window of my house. They've been thriving there for over two months now and I thought I'd finally found a winner (it's too hot for pansies and other daintier ...
13
votes
1answer
488 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 ...
13
votes
2answers
536 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 ...
14
votes
4answers
6k 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 ...
13
votes
3answers
9k 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 ...
19
votes
2answers
399 views

What gave my carrots “legs”?

This is the first year I've grown carrots. What gave them legs: I have a theory that the seedlings merge together. I don't know if that is just silly or if carrots just naturally grow like this.
8
votes
1answer
560 views

Why is my phalaenopsis' keiki (orchid) not thriving?

About five years ago, I bought a fully grown and blooming Phalaenopsis orchid. After a month or so, the blooms fell off as expected. I continued to care for it as directed, but it never flowered ...
6
votes
1answer
55 views

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 ...
9
votes
1answer
326 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 ...
9
votes
3answers
2k views

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. ...
11
votes
1answer
6k 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 ...
8
votes
2answers
649 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 ...
6
votes
1answer
773 views

Why do my gardenias turn yellow before they bloom?

My gardenias seem to be happy all year around, but when they bloom, they turn half yellow. Is there a way to keep them green through the bloom phase?
15
votes
1answer
476 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 ...
7
votes
2answers
11k 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. ...
14
votes
2answers
530 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 ...
8
votes
1answer
457 views

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 ...
11
votes
2answers
3k 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. ...
15
votes
3answers
7k 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, ...
10
votes
1answer
640 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 ...
12
votes
1answer
422 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?
10
votes
1answer
999 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?