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18 votes

Why is this tree refusing to shed its dead leaves?

This is called Marcescence. Some species of trees retain their old leaves longer than others, and young trees may retain them longer than old trees. In the UK, "copper beech" trees (with naturally ...
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17 votes
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Why does my oak tree have clumps of leaves in the winter?

It's hard to be certain from just the picture, but that looks like mistletoe: https://tcrcd.net/brochures/pdf/Oak_Mistletoe.pdf.
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13 votes
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What are these spots under the leaves in my cut flowers?

The leaves in the picture looks like ferns. As you may know, ferns use spores to reproduce. It appears to me that it is just the Sori under your leaves (the Sori is made up of groups of Sporangium, ...
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  • 531
13 votes
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Easiest way to remove large amount of leaves from yard

I use a lawnmower with a bagger. The blades chop the leaves and reduce the volume by up to 80%. The finely shredded leaves are great mulch for plant or vegetable beds. I cut my grass low in the ...
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13 votes

Are there any benefits from leaving dead leaves in the soil around a plant?

Leaves are good compost if they are shredded. If left as is on garden beds or lawns they tend to clump and can smother the smaller perennials. To do my fall clean up I put a bagger on the mower and ...
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12 votes
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What causes very small black solid spots on strawberry leaves?

These are aphids whose lifestyle is to live off the plant juices in the leaves. They can be found almost everywhere during the growing season and prefer plants with soft leaves. You will rarely find ...
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12 votes
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Does my very young Eureka lemon tree have leaf disease?

It looks in your photos as if you have it in a small cup with no drainage. I would surmise from that & the condition of the leaves that it is over-watered and probably suffering from root rot. ...
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  • 1,760
11 votes

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

That looks like a squash of some kind. It will probably send out runners and spread quite a bit. The fruit should be edible, but I can't really tell what it will look like. It may be more like a ...
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11 votes
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Why is the foliage turning yellow on this climbing indoor vine?

Looks like natural variegation to me...looks like a typical golden pothos (Epipremnum aureum). It's supposed to have these marks. They show up and contrast best with good lighting. Don't worry about ...
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11 votes
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What are these red marks on the leaves of my pelargoniums?

Nothing to worry about, if you're referring to the semi circular red area on the leaves - these are zonally marked Pelargoniums, and that's what they should look like.
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11 votes
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Will succulent leaves grow back?

Whether it lives or dies, there is no way it will grow back into something that looks nice as a "gift" in ten days, so start looking for another present to give your friend! Your guess that ...
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10 votes

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

That is Early Blight, Alternaria solani. The earlier you treat, the better the control, as a strong infection will build up resistance to the fungicide. Here's what to do: Remove all leaves showing ...
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10 votes
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How do you manage dying leaves on young plants?

The only time you usually remove leaves which are slightly damaged or part dead is if the plant is highly ornamental and it's detracting from its appearance, or the leaf is damaged by some kind of ...
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  • 128k
10 votes

What is this stinging plant with little hairs on the leaves?

Urtica dioica - Stinging nettles...! Very valuable wilderness food. Truly! If you grab a leaf touching just the topside you can mash it (eliminating the chemicals on the underside of the leaf) roll ...
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10 votes
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What are the names of the parts of leaves?

Hope this is what you were looking for. These pictures are all from the site of the Colorado Master Gardener Program. (There's much more extensive information there than I can copy here.) They have ...
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  • 1,101
9 votes
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What is causing the leaves to develop brownish patches between the veins on my tomato plant?

That is magnesium deficiency. It can also cause yellowing between leaf veins. Treat by watering Epsom salts (magnesium sulfate) at a rate of 1 cup per every two gallons, with every watering until the ...
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9 votes

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

Mint leaves are just fine to use any time, including after the plant has flowered. The flavor may not be quite as strong as it was before it flowered, so you may need to add more leaves to your jelly ...
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9 votes
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Identify this tree with two different types of leaves?

This is some species of Acacia. The strap-shaped leaves are actually petioles (the leaf stem) which have expanded and flattened, and do not have an actual leaf blade. This type of flattened petiole ...
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  • 1,448
9 votes

Easiest way to remove large amount of leaves from yard

I let the grass grow a little higher than usual for a week or two before the leaves fall, set the mower on the highest setting and mow twice at that setting. This mulches the leaves in place. I do ...
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  • 91
8 votes
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Why is my Swiss chard suddenly wilting?

Look on the bottom of the leaves. If you see small rows of tiny white capsules, you have leaf miners. These devastated spinach and chard for our garden. They also infest beet greens but are not a ...
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  • 196
8 votes

What causes very small black solid spots on strawberry leaves?

Going off of what Kevin said (I can't make comments yet :). I used to work in a greenhouse for a year in high school. There is another way other than dish soap and water as well as picking them off ...
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8 votes
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What disease is causing raised blisters on the leaves of my plant?

Alstonia scholaris (L.) R. Br. is a very beautiful ornamental tree, which is commonly known as pagoda tree because of its pagoda like growing habit. It is commonly infected by the Homopteran, ...
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  • 22.9k
7 votes

Should I have added dead leaves directly to my garden?

I do it every year and always have great vegetable gardens. If the forest does not die from leaves your garden will not. I just till then in several times over the fall and winter then have a great ...
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  • 71
7 votes
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Why are my Aglaonema's leaves turning yellow rapidly?

Here is a brief symptoms guide which may aid you: not enough water: older leaves die and are dry and papery mealybug infestation: white cottony tufts in the axils of the leaves natural aging: older ...
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  • 56k
7 votes

Lemon tree leaf deformation

I strongly suspect this is early infection with citrus leaf miner - the moth that causes this is an import from Asia and is now very active in the USA. There is evidence of leaf miner infestation in ...
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  • 128k
7 votes

What is this plant with red growths on its leaves?

Those are not fruits, but galls caused by an insect laying its eggs inside the leaf tissue. It is probably a tiny wasp. If you carefully dissect one of the galls you will find either an unhatched ...
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7 votes
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Should I let my basil leaves age?

The larger leaves don't necessarily have poor flavor. It's more about age than size. Old leaves don't taste as good as new ones. That's why a good harvesting system is key. Most people try to do this ...
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7 votes
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Grapes leaves too dry - is that normal?

Bacterial leaf spot infection. There is no cure, but you can try to avoid it next season. Here are some tips: Cultural: Clean up and burn/landfill fallen leaves/fruit. Don't compost. Loosen the ...
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  • 51.5k
7 votes

Does my very young Eureka lemon tree have leaf disease?

The dark green veins and light green leaf material also indicate an Iron/Manganese deficiency which is very common with citrus grown on alkaline soils. See here for more detail. Repotting with new ...
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