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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
Accepted

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
Accepted

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, ...
  • 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 ...
  • 56.6k
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
Accepted

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 ...
  • 56.6k
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. ...
  • 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 ...
  • 51.5k
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 ...
  • 51.5k
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 ...
  • 11.3k
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 ...
  • 51.5k
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 ...
  • 1,111
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 ...
  • 7,707
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 ...
  • 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 ...
  • 91
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 ...
8 votes
Accepted

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, ...
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 ...
  • 71
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 ...
7 votes
Accepted

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 ...
  • 51.5k
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 ...
  • 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 ...
  • 56.6k
7 votes

What are these alien egg-like things on the back of rose leaves?

It is not a rose, but a fern. Fern usually have sori (https://en.wikipedia.org/wiki/Sorus), which are used to disperse spores. Ferns have no flowers, so no seeds. Note the white flowers come from a ...
7 votes

Why does this Jade plant have small leaves when compared to other Jade plants?

This plant is not a Crassula! It is a Portulacaria afra, commonly called Spekboom or Elephant Bush in South Africa, which is where it originates. It is extremely drought tolerant, but can also grow ...
7 votes
Accepted

How to Get Indoor Avocado Tree to Branch Out

There are a lot of questions about avocado from people with the same issue. Avocado's have strong apical dominance. This plant wants to be a very tall tree. The other factor is that when grown ...
  • 56.6k
7 votes
Accepted

Benefits of wiping the dust/dirt off the leaves?

Cleaning of plant leaves is usually only done on houseplants, because they're inclined to accumulate a lot of dust over time. Outdoors, exposed to the elements, plants get 'cleaned' by moving air (...
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