Plant organ used for photosynthesis

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2
votes
2answers
139 views

Why do the tips of my lettuce leaves look dark/burnt and feel brittle?

I am growing Batavian 'Arianna' lettuce in a container on my balcony. I'm in San Francisco, so it gets some sun, but it's not all day, and it gets a lot of shade too. I noticed that the tips of some ...
4
votes
1answer
154 views

What's wrong with my dwarf cherry tree's leaves?

I'm starting to see holes and some black spots on some leaves. Anyone know what this is and how I can treat this?
6
votes
2answers
111 views

Can I still use the mint leaves after the plant has flowered?

I have been gone a few weeks. Now my mint has all flowered. Can I still use the leaves? I want to make a batch of mint jelly.
3
votes
1answer
834 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 ...
9
votes
4answers
9k views

Sudden Outbreak of Yellow Leaves on Tomato (and Other) Plants

My mother was in a panic this morning. She called me over to help her with her garden because many of her tomato plants had suddenly developed yellow leaves, many of which (but not all) also have ...
4
votes
1answer
505 views

White, fur like strands and spots on underside of chilli plant leaves

I am growing scotch bonnet, jalapeno and cayenne pepper plants indoors from seed. The scotch bonnet plants have what looks like white fur growing around the veins on the underside of their leaves. ...
5
votes
1answer
156 views

What's affecting this tomato plant? [duplicate]

Can anyone tell what's wrong with this tomato plant? Is it disease or deficiency? My areas been having issues with late blight the last few years. One spot seems to have a concentric circle around it ...
3
votes
1answer
159 views

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 ...
13
votes
6answers
7k views

What can you do with oak leaves within a garden? Are they compostable?

We have a lot of oak trees on our property. Is there anything we can do with the oak leaves? They never really seem to break down, and because of that, I am afraid to try and add them to a compost. ...
4
votes
2answers
764 views

Why is my Australian Tree Fern's leaves curling up at the ends and looking kind of burnt?

I have an Australian Tree Fern and its leaves are starting to turn 'crispy' at the tips. One branch looks like it's been burnt almost. Can anyone tell me why?
2
votes
1answer
113 views

How do I revive an air-layer that has dropped all its leaves?

I bought a Sweetheart Lychee air-layer a month ago. It is less than a foot tall. I immediately planted it in a plastic container whose diameter matched the canopy size. For the first week, I kept it ...
4
votes
1answer
254 views

How long do Nepenthes leaves last without traps

My nepenthes ventricosa x mira has lost two of the four traps it had when it shipped in but the leaves are still living, kinda growing, and are healthy. But I am wondering how long will they last. ...
2
votes
1answer
260 views

Which plant is this? “Dead ends,” pruning, watering tips

This plant has been in my possession since last summer (I moved into a new, and otherwise empty, apartment one year ago). I wanted to keep it, but because there are no labels, I decided to water it ...
3
votes
2answers
83 views

What's this hole in the Cabbage leaf?

What's this hole I just discovered in the leaf of this otherwise very healthy Cabbage? I've got yellow insect cards nearby, and beneficial nematodes in the soil, which have collectively done wonders ...
1
vote
0answers
138 views

identifing a plant with oval cut edge leaves and purple spotted green stems [closed]

I have a plant that has oval shaped leaves that are thickish and have hair. The edges are jagged cut when the leaves are small and grow less so as the leaf gets bigger. The stem is purple spotted and ...
3
votes
1answer
275 views

Why did the leaves on my purple leaved barberry turn green after planting?

I recently received a small potted purple leaved barberry bush. I planted it in good topsoil with a ph of about 6.0. The area gets about 5 hours of direct sun per day. There is one large boxelder tree ...
3
votes
2answers
291 views

How do I stop the leaves from curling on my Stromanthe “Burle Marx”?

The leaves on my Stromanthe "Burle Marx" are all curling vertically. I usually water it from the bottom on a bed of stones but I wonder if the water standing on the stones has caused it to be ...
6
votes
1answer
1k views

Why is my Swiss chard suddenly wilting?

I live in Brooklyn, New York, U.S.A. This Swiss Chard has been doing well so far this season, and all the largest leaves you see here were green and strong as recently as a few days ago. We had the ...
3
votes
1answer
472 views

How do I get rid of worm-like trails all over my Senetti plants' leaves?

I have had a Senetti (more info) for about 18 months, and last year it was attacked by aphids. Initially the leaves had a worm like discolouration, as if something was attacking or eating them. Are ...
7
votes
1answer
3k views

Why are the leaves on my chilli plant turning 'silver'?

The leaves on my chilli plant have recently started turning silver, (as below), they also become thinner and have an 'elasticy' quality to them. Any idea what is causing this? Factors to consider: ...
3
votes
2answers
161 views

How do you manage dying leaves on young plants?

If a leaf on a plant is shriveling or yellowing, should you cut it off or leave it there? If you do the former, should you only snip off the damaged parts or should you cut off the entire leaf? My ...
4
votes
1answer
826 views

Why are the lower leaves of my tropical Guava yellowing and dropping?

I had a Century Guava (世紀芭樂) shipped over from Taiwan to zone 9 California. It is nearly 6 feet tall. I planted it in the biggest container that IKEA sold, 20 inches wide, 2 feet deep. I drilled many ...
3
votes
2answers
300 views

How do I find out & treat what is eating my hibiscus leaves

I was wondering what might be eating away at my hibiscus and how do I protect my poor little plant. I don't visually see any bugs on or under the leaves. Update: This plant is in a pot. Location: ...
3
votes
1answer
440 views

Are cherry leaves naturally droopy?

I have 4 cherry varieties grafted onto one rootstock. They are Royal Ann, Bing, Black Tartarian, and Lapins. It was planted in a dormant state in January 2014 in zone 9. It gets at least 8 hours of ...
3
votes
1answer
2k 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; ...
3
votes
1answer
160 views

White pink leaves of Adenium? Albino?

I sow some Adenium seeds few weeks ago.. some were germinated and looking really very good. But one plant have pink and white leaves.. initially I thought this is some kind of disease and new leaves ...
2
votes
1answer
355 views

Golden Pothos Leaves Are Regularly Dying

I have a very interesting set up and had questions about the differences across our factory floor. We have three columns of Golden Pothos that are numbered about 96 plants (unless the irrigation ...
3
votes
1answer
66 views

Why is my Ficus loosing its leaves?

This spring I purchased an indoor tree and I think it is a ficus. It has recently, over the last month, lost many leaves, and does not look as good as before. It looks rather bald. Is there ...
3
votes
2answers
620 views

What is wrong with my Bing cherry tree?

My cherry tree is wilting (has been for about 2 months now) and I have tried putting fungicide and pesticide on it (Ortho) and feed it miracle grow every 10 days. It is really hot in Tennessee right ...
6
votes
2answers
12k 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 ...
1
vote
1answer
65 views

Leaves seem burnt

I have some basil plants and a tomato plant (which is hanging upside down and growing well) however their leaves seem to be burned. I live in Florida and they are out on my balcony but I'm not too ...
2
votes
1answer
371 views

How much to remove when trimming dead leaves on a squash plant?

I am specifically asking this regarding a squash plant, but general advice would be useful. If I have dead leaves, which I assume I should remove, should I remove the whole stem that it is growing ...
4
votes
3answers
5k 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 ...
1
vote
1answer
270 views

Discolouration on Bay laurus leaves

I have recently purchased a Standard Kitchen Bay Laurus nobilis, once I got home I noticed some discolouration (black spots) on the leaves. Is this a disease? do I need to remove the affected leaves ...
3
votes
1answer
801 views

Holes in leaves of Yoshino Cherry

I have just started gardening. My first tree purchase was a Yoshino Cherry (Prunus y yedoensis Ivensii). After potting it into a larger pot, it has started to have lots of holes appear in the leaves. ...
1
vote
1answer
169 views

Royal Frost Birch Leaves

I planted a new clump about two weeks ago. The leaves were green and the new growth is coming out crimson and staying that color, but the existing green leaves are still staying green. I can see the ...
1
vote
1answer
60 views

At what point is a leaf dead?

My little apple seedlings (from seed) have gone through a bit too much sun this week, as a string of 90-degree days after being indoor plants has been a shock to them. Their leaves were burnt along ...
10
votes
1answer
554 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 ...
4
votes
1answer
507 views

How to grow new leaves on rubber plant after they fall off

I have a rubber plant that lost quite few leaves shortly after we got it. We've got it back on track and are seeing some new chutes, but I'm wondering if there's a way to grow new leaves on the stems ...
3
votes
2answers
184 views

Leaf mold from oak leaves

In my yard I mainly have oak trees. I try to create leaf mold from them and was told that this can take longer than one year which seems to be the average duration for "other" leaves. What do I need ...
2
votes
3answers
2k views

Should I have added dead leaves directly to my garden?

With all the fallen leaves that were on our field I picked them up with my lawnmower with the pouch and them put that in my garden and worked the rototiller afterwards. I thought it would be good for ...
8
votes
2answers
471 views

What should I do with leaves skimmed out of a pool?

We moved into a house with a large in-ground pool, and have been learning to maintain it (I'm a yard-work newbie). We skim leaves and twigs out every few days, and some days there is rather a lot of ...
4
votes
1answer
2k views

Leaves at the tip on new branches of my cherry-trees are wrinkled

On my cherry-trees I observed that the leaves of the tips of newly grown branches are wrinkled and inside there is something which simply said looks like black dirt. The leaves do not look damaged, ...
4
votes
2answers
322 views

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 ...
2
votes
1answer
88 views

French Bean Cobra got scorched by sun?

Took my bean outside recently and it was just fine for last 2 days when suddenly yesterday 4 or 5 leave got their tips dried out. It is in pot on North facing wall so wonder if that might be due to ...
10
votes
1answer
2k views

How can I help a sunburned jade tree recover?

I put my jade tree out to get some sun yesterday, and apparently the sun was a little too blazingly direct. Instead of the healthy red edges I was expecting to see, several of the leaves are now ...
6
votes
1answer
870 views

What is the best way to hide daffodil leaves after the flowers die?

I have an old flower bed in which the large daffodil clumps bloom spectacularly each spring, but after the flowers fade, the leaves grow some and last for a couple of months before they also die. ...
6
votes
1answer
66 views

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?
8
votes
2answers
785 views

What is the problem/disease that causes bobbly peach tree leaves?

What is the likely cause of the bobbly forms on the leaves of a peach tree? Does it matter or is it just some natural anomaly that doesn't affect the tree's health? If is it a concern how can it be ...
10
votes
2answers
5k views

Will leaving fallen leaves on the lawn during winter damage the grass?

I have a lot of leaves on my lawn (in Oklahoma). Will it hurt the grass if I leave the leaves there over the winter?