Plant organ used for photosynthesis

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6
votes
1answer
56 views

How do I prevent holes in the leaves of my vegetable garden?

Something is eating the leaves of several plants in my vegetable garden. Can you help determine what is causing this and how I can prevent it? This affects several of my vegetables: Turnips, Lettuce, ...
3
votes
1answer
84 views

How to cure sticky citrus leaves?

In the pic you can see big sticky drops on my indoor citrus tree. I have the citrus tree right next to window. I have there also another 3 small citrus trees like this, but only this one has sticky ...
7
votes
1answer
337 views

What is causing curled and deformed capsicum and chilli leaves?

I live in western South Australia (Mediterranean climate with sandy, pH neutral soils). I turned over the vegetable garden (history unknown) in August/September, adding Dynamic Lifter for vegetables, ...
4
votes
1answer
2k 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 ...
6
votes
5answers
6k 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 ...
6
votes
1answer
6k views

What is causing curled leaves on different varieties of citrus?

Is anyone able to identify this disease / pest? We have this on several citrus of different types including an orange, grapefruit, lime, and a mandarin orange. My first thought was that it could ...
5
votes
1answer
87 views

What do I do with my avocado plant during arctic winter?

I am going to start with describing my plant and how it has grown and its living conditions, and then I'll ask my questions later. So I have this indoor avocado plant which I planted from a nut and it ...
8
votes
2answers
143 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 ...
5
votes
0answers
25 views

needle-point size white spots all around the outer edge of Ficus leaves [closed]

Hello. I am writing from the San Fernando Valley, in Southern California where the temperatures vary from 48F at night to 85F during the day this time of the year. I have a 35 year old Ficus outside ...
4
votes
1answer
69 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?
4
votes
1answer
118 views

How can I get rid of these bugs on my African violets?

I had two pots of Saintpaulia (African Violet). They've been doing pretty well, lots of flowers, and breeding! However one of them has starting having bugs. When the blossoms open up, there are one or ...
3
votes
3answers
93 views

What should I do to prevent my kiwi leaves losing their color?

My kiwi leaves are losing their green color too fast. Even new, small leaves can lose it and fall off. The kiwi is 1 year old, grown in a pot in my apartment. It is not close to a window or a ...
4
votes
2answers
137 views

What is this plant with leaves over a foot long, in Pennsylvania?

I found this plant growing on an overgrown hill slope full of wild plants and weeds in Pennsylvania. It looks like a Dock plant or a super large plantain leaf. I just collected a good amount of them, ...
2
votes
1answer
403 views

Why are my chives turning brown on the tips of their leaves?

I grow chives in a pot. In the last few weeks, it grew dramatically. However, in the last days I noticed that the tips of the leaves turned brown. What could it be? Some type of disease? Lack of ...
3
votes
0answers
70 views

Strange brown/dead spots on leaves?

What I have here is a plant which is being affected by something which is making certain spots of its leaves appear to be unhealthy. Does anyone have any idea what's going on? Is this something that ...
14
votes
4answers
11k 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 ...
6
votes
1answer
506 views

Why is the foliage turning yellow on this climbing indoor vine?

I've had this plant in water until it grew enough roots and a few more leaves. I'm not sure what kind of plant this is, but its starting to grow longer; when it was only one little leaf when I rescued ...
3
votes
1answer
132 views

Why is my snake plants' leaf fading in color?

I've had this snake plant for quite some time, but recently one of the leaves has been fading in color. The mix I'm using is perlite based, and I water it once a week. I give it sunlight in the ...
5
votes
1answer
96 views

What is causing yellow spots on my cucumber seedling's leaves?

I planted these cucumbers last week, and yesterday I noticed the leaves have yellow spots and edges. Do I need to buy new plants?
2
votes
1answer
146 views

What are these shallow markings on my chili leaves?

I had some green aphids, and killed them with an acetamiprid based insecticide. Everything after that seemed fine until recently. Some whiteflies started showing and I treated those with a mixture of ...
4
votes
3answers
2k views

Why are the leaves of my Peace Lily wilted and black?

I recently bought a flowering house plant. I may have watered it too much, me thinks. Since my apartment gets little natural light, I put it outside on the patio the other day in direct sunlight, only ...
3
votes
0answers
107 views

Why has my kiwi plant developed red leaves?

I have grown a kiwi plant which is growing nicely in my office. Recently, some leaves developed a red hue. What is happening here? Do I have to worry?
4
votes
3answers
572 views

Cucumber leaves turning white, dying, with yellowish powder

I have some cucumber plants (sorry, not sure which type), with a couple in a large, long pot, and one other in a small pot by itself. The plant in the small pot has a reasonably-sized cucumber, about ...
4
votes
1answer
60 views

Jubilee blueberry's leaves are browning

I potted a Jubilee Blueberry plant 2 weeks ago. The leaves have started to brown this week. The same thing happened to my Spartan Blueberry plant. That one completely browned up and died. How do I ...
1
vote
1answer
69 views

Garden tree seems “sick”

I have multiple of these trees and one of them seems "sick" - it barely has any leaves and there is some discoloration on it. Is there anything I can do to treat it or do I basically have to rip it ...
3
votes
2answers
124 views

What is the best way to remove a lot of dead cat grass leaves?

I have multiple groups of cat grass for decoration. They're about 6 months old and some of the leaves died, making it less appealing. Since there are a lot of them, what would be the best way to get ...
1
vote
1answer
91 views

Pruning and caring for heuchera / coral bells that have gotten too much sun?

It's getting into the driest, hottest part of summer here in MI and my heuchera / coral bells are starting to show some dissatisfaction with it. The outer leaves are browning and turning crispy. My ...
7
votes
1answer
1k views

What is causing the leaves to develop brownish patches between the veins on my tomato plant?

My tomato plant's leaves are turning brown in some places (photo). Zoom in It seems to affect mostly older leaves, but not all of them, as you can see in the image. It starts with a few small brown ...
9
votes
2answers
210 views

What is causing dry, dark green spots on the leaves of my new basil plant?

I just bought a basil plant this past week at the supermarket to have some fresh basil for cooking. It had some dark green spots on it, which at first I assumed were just dry/dying leaves. I'm not so ...
2
votes
1answer
728 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?
2
votes
1answer
313 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
78 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
79 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. ...
0
votes
1answer
258 views

Money plant leaves are too big ~6"

Why is my money plant (pothos) growing such big leaves? https://instagram.com/p/3u2cUloqIP/
2
votes
1answer
205 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
60 views

What flowers require a period of time after blooming before pruning the leaves?

The author of this answer explains that the leaves of daffodils and tulips should not be cut down or otherwise disturbed for six weeks after the flower has gone by, as they are providing the necessary ...
7
votes
6answers
599 views

Bonsai shedding leaves 1 week after purchase

I bought the below bonsai tree from Home Depot as a Xmas gift for a friend. I haven't even given the gift yet and the leaves are already starting to fall out en masse. I have the tree indoors in ...
3
votes
2answers
1k 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
6
votes
2answers
103 views

How can I compost oak leaves and sawdust?

I have the enviable problem of having several (6 or 7) cubic yards of both oak leaves and oak sawdust from having logged off and making cabinet lumber from many oak trees that once grew where our ...
4
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 ...
1
vote
0answers
22 views

What is causing yellow leaves on my Morning Glory? [duplicate]

What's wrong with my Morning Glory? It's grown outside, the temperature has been around 5-10 °C at night and 10-30 °C at day time since I planted them. Could it be cold, pH, overwatering?
1
vote
2answers
236 views

Why do we have yellowing watermelon leaves?

My husband and I, first time gardeners, planted some watermelon for our grandchildren. We water the raised garden they are in every other night. We have been noticing yellow leaves, but only on the ...
1
vote
1answer
98 views

Why would a walnut tree lose all its leaves in ten minutes?

I watched a walnut tree lose all its leaves in about ten minutes one time some years ago and I was wondering if this is something that is normal and if not would there be a simple explanation for it. ...
5
votes
1answer
118 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 ...
2
votes
3answers
5k 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
851 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
1answer
135 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 ...
6
votes
3answers
281 views

What's causing the edges of my blueberry leaves to burn?

Last year, this Sunshine Blueberry plant was doing stupendously - not a burned leaf in sight. Now most of the leaves appear like they're burning. Also, the fruit never mature to full size before they ...
4
votes
2answers
1k views

Why are the leaves of my ginger plant drying out?

It's only been 3-4 months since I potted my ginger plants. I water them every 2-3 days depending on the the weather. I try not to get the soil too moist. Over the last couple weeks, the leaves of one ...
4
votes
1answer
314 views

Does moss sprout leaves?

I had some moss in one of my seedlings pot and I asked what I should do with it here in GSE. I was assured it was mostly harmless so I left it be. However, a couple of days ago, it has sprouted leaves....