Questions tagged [maple]

Common name for Acer trees, famous for syrup produced from their sap.

Maple is the common name for the genus Acer s (and ). They are members of the sub-family Hippocastanaceae.

The genus contains about 129 species. Most are native to Asia, although some are native to Europe, North Africa, and North America. Only Acer laurinum is native to the southern hemisphere.

Most Acer are deciduous although a few Mediterranean and Asian species are evergreen.

Classic Acer leaves have a veined, lobed palmate shape; and are arranged on opposite sides of the stem. Seeds are known as "keys" and are attached to a flattened wing of papery tissue. This wing causes a falling seed to spin and to travel long distances in the wind. These characteristic seeds have various common names including "whirlybirds" and "helicopters".

In horticulture, Acers are typically grown as ornamental trees. They are typically fast growing and cold tolerant. A number of Asian varieties are also popular choices for .

Commercially, Acer saccharum is grown for maple syrup which is produced by boiling the tree's sap. Some Acer trees are also grown for timber - it is particularly popular for bowling pins, bowling alley lanes, and baseball bats. Acer woods also tend to carry sound well, making it a popular choice in many musical instruments.

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What are the curled darkened areas on maple leaves?

My trident maple bonsai went into dormancy entering winter. I repotted It, carefully removing some large roots and pruning for radial roots. Bonsai soil mix of peat, leca, stone, bark. Extremely well draining. The pot is currently taking 4 days to…
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Was removal of an old red maple tree warranted?

In our front yard was an old, huge, and beautiful red maple tree approximately 150 years old. The crown was in great shape, the tree was in full bud recently and in full leaf this past summer/fall. However, the trunk near the base had some decay. …
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Trident maple leaf curl with some dark tips

Two maples have just come out of dormancy sprouting deformed leaves. They are nearly all curled and some have shrivelled and died with black edges. Any idea what it could be? They are outside mainly in shade. Direct sun is not an issue. Its warm…
JonathanC
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Are my large box elder and Norway maple trees too close?

In one corner of my yard I have two largish trees that are about 5 feet apart. One is a box elder, the other is a norway maple. They both have trunks about 12-14 inches in diameter. The box elder is a little bigger and taller. It seems like the…
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How to trim this multistem tree

I recently moved into a new house. A tree in the backyard does not seem to have a "main" trunk. It has a lot of branches coming from the ground. What should I do with it? Remove it? Trim it, if so how? Leave it? Pictures below:
rys
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Is my maple tree in trouble?

Location is Pacific Northwest (15 mi W of Portland, OR) A 2-inch diameter branch broke off my backyard maple tree at the trunk this afternoon. The branch had many healthy-looking leaves and seed "helicopters" on it. The leaves show no obvious signs…
Jim Garrison
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Unlucky with maples every single time I plant them

I have tried several times to grow maples. Every time, something has gone wrong and they didn't survive. I always make sure the seed is viable(In other words I can feel the seed inside the pod) before I plant it. The first time I tried to grow…
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What's this gash on a Maple tree?

What's this gash on a Maple tree? It seems almost "infected" compared to the "normal" splitting I see on the other Maple tree right now. NOTE: It's been raining all day. That second photo is showing sites where the tree was pruned, or cracked a…
Charney Kaye
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What do healthy red maple saplings look like?

Last year I had to cut down a red maple tree. I was able to save three of its offspring. One is ~2' tall and I moved it from where it volunteered behind a bush to the middle of the yard. Another is ~8" tall and spent most of last year in a pot.…
Freiheit
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What's causing the bark on my maple sapling to split?

I planted a Maple sapling in my front yard in November 2011, and it hasn't shown very much growth since. It gets leaves during the spring, but they seem to fall off earlier than all the other trees in the area, and I haven't seen any substantial…
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What is the problem for this 6yo maple and does it need intervention?

Six years ago a 1"-DBH maple (believed to be a Norway maple cultivar) was planted at an institution to commemorate an event. This is in zone 5 in central NY, which has been experiencing moderate drought this summer. Someone noticed the trees' leaves…
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Why are my Acer seedlings drying up and dying?

I’ve grown lots of little Acer seedlings from seed I picked last autumn and germinated early this year after 100 days in the fridge. I was very excited about the success of the seeds but now at a good enough size they are dropping like flies. They…
Georgina
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Is it safe to cut or shave the roots of a Norway Maple tree?

My deck was built 30 years age around a Norway Maple. Now it has grown to the point that the roots are lifting parts of the deck. It is safe to cut or shave the roots that are lifting the deck?
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Young maple tree with no growth on top shoots

I have a maple tree I planted maybe 2 years ago. It seems to be doing well, but has a weird thing where there is no leafs growing on the top stems of the tree. Do I need to trim this to promote vertical growth? Should I just leave it? What exactly…
justing
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What causes fungal attack to acer trees

I have a red Acer tree (about six years old)up the trunk there are signs of white power with brown spots. I have brushed them off and my tree appears to be healthy. What could this be?
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