Plant organ used for photosynthesis

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4
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1answer
65 views

How to check if a tropical tree has survived a subtropic winter?

I am currently living in the California Bay Area, a subtropic region. I grow quite a few tropical trees in my backyard. This winter has been the first subtropic winter that these trees have ever ...
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?
4
votes
1answer
472 views

Dry brown patches on cayenne chilli plant leaves, leaves starting to curl, tiny black spots

Note: I have posted a previous question regarding my chilli plants, its details may help in diagnosing this new issue. You can see it here: White, fur like strands and spots on underside of chilli ...
4
votes
1answer
63 views

Is my mint plant dying or diseased?

About a week ago I decided to propagate a healthy stalk of mint that I had bought from the grocery store. The roots appear to be healthy and full, but two of the leaves appear to be abnormal. One of ...
3
votes
4answers
2k 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 ...
3
votes
1answer
164 views

What is this plant with red growths on its leaves?

This plant or tree is in front of my house. Can somebody identify this one. It is around five feet height with cherry like red growths on the leaves. Further to my question, I dissected this red ...
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 ...
3
votes
1answer
169 views

What is this large plant that came up when I turned my soil?

I turned my soil recently and this huge plant started to grow. I have put my hand there to show the size. It does not seem to be a weed so I would really want to know if this is some kind of vegetable ...
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
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
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 ...
3
votes
1answer
180 views

Grapes leaves too dry - is that normal?

Recently I noticed my green grapes leaves don't look too good. There's nothing like scales or ants or any other sign of parasites. Only older leaves are affected, new ones are fine as you can see on ...
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 ...
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
399 views

Why did my grape hyacinths put out leaves in the fall?

Normally my grape hyacinth only puts out leaves in the spring, but this year they all are vigorously growing leaves in the fall. Why do they do that? Is it diagnostic of a problem?
3
votes
1answer
438 views

Why do many of my parsley leaves have white tips?

I'm not sure if this is normal? Not every leaf has this but lots of them do
3
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1answer
272 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
1answer
471 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 ...
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
159 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 ...
3
votes
1answer
901 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 ...
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 ...
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 ...
3
votes
1answer
832 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 ...
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. ...
3
votes
2answers
343 views

Why are the leaves curling on my snowball bush?

Our small snowball bush has some curled leaves. I don't see any evidence of any bugs eating it or damaging it. What could be causing it? What can I do to treat/fix it? Click on photo for full size ...
3
votes
1answer
319 views

Why did the leaves on my Plumeria alba develop black spots and fall off?

I got a small Plumeria alba tree in my office, right next to a very sunny window. At first it was growing brand new leaves and looked great. Over time the leaves got black dots and fell off and the ...
3
votes
0answers
36 views

Are these eggs on this Sugarcane Jujube leaf?

This is a leaf from a Sugarcane Jujube tree in Arizona. Are these eggs on the underside of this leaf? If so, what type of insect would they be from?
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 ...
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 ...
2
votes
2answers
718 views

What caused the leaf scorch on my Dracaena deremensis 'Lemon Lime' and what should I do about it?

I have a Dracaena deremensis 'Lemon Lime' in my office. Several month ago it began to show leaf scorches. The gardener that sold it suggested it could be a symptom of sun burns. I then moved the ...
2
votes
2answers
145 views

Chili leaves yellowing

I have a plant of habanero chocolate. In August it had very beautiful leaves, with an intense green color: It was in a tiny pot, so I decided to transplant it in a bigger vase, filled with a mix of ...
2
votes
1answer
63 views

Should I let my basil leaves age?

Is it okay to let the basil leaves "age"? Like the leaves at the lower part of the stem. I pinch back my basil plant at the top, so the leaves at the bottom doesn't get touched and grow larger. I have ...
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 ...
2
votes
1answer
81 views

Why are my chilli plant's leaves turning upside down?

I have a small chilli plant. It's in a pot and yesterday I put it outside in the sun. When I brought it back inside some of its leaves had turned upside down. What is the problem?
2
votes
2answers
26 views

My red leaf corkscrew hazel is going green?

I have a red corkscrew hazel: It's in a large pot, and I'm not in a position to plant it out (nor will I be any time soon). However I've noticed that some of the leaves are going green - a lot ...
2
votes
1answer
388 views

What is wrong with this tomato plant with yellow and black spotted leaves? [picture]

What is wrong with this tomato plant? The yellow with black spots has been spreading through the plant. I am hoping someone knows exactly what this is and how I can treat it or prevent it.
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 ...
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 ...
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 ...
2
votes
1answer
41 views

Can anyone identify this maple-type leafed plant?

This plant was growing like a vine within an evergreen I have. The thickest part of the stem was about .33 inches wide and it was woody. From that there were lighter green stems that branched. ...
2
votes
1answer
88 views

What plant is this leaf I found in my rocket salad from?

Today I bought some rocket at the supermarket (also known as rucola) and found this leaf (well, my tougue noticed those funny, quite stiff little hairs). It's got hairs all over. Does anyone know ...
2
votes
3answers
2k views

Why are my tree ferns' leaves drying out and dying?

I have several large tree ferns that are dying. The leaves are turning brown, not one at a time, all together, and then dying. It seems to be spreading to other ferns in my yard. They have been here ...
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 ...
2
votes
1answer
50 views

Why are the leaves on my Peace Lilly turning yellow and brown?

Several leaves of my Peace Lilly are turning brown directly, or after first turning yellow. I'm pretty confident I'm watering it the right amount, but the hot weather started here in Madrid about 10 ...
2
votes
1answer
65 views

Why is my Schefflera losing healthy looking leaves?

I bought two scheffleras from a grocery store a few days ago. I've never had this type of plant before, so I'm unsure of what is normal for it or not. One seems to be doing better than the other. The ...
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 ...
1
vote
1answer
73 views

White fuzzy hairy stuff on plant leaves…ugh, what to do

The plant is healthy otherwise, I see a few ants crawling around on it. Is this a sickness? How do I remove this and get shiny leaves like I see others have?
1
vote
2answers
186 views

Hedge plant (Photinia Robusta) looks like it is dying. Is there anything I can do?

The plant (in the foreground of the picture) appears to be dying after a storm last tuesday. The leaves has got a darkish colour, and the flowers are turning brownish. They are supposed to be bright ...
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 ...