No Seeds From Maple Trees- Wondering Why

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Hi All!
Our yard has, or has within 30 feet, 16 maple trees. Most are estimated to be about 100+ years old. (Trunks are between 4 feet and 3 feet diameter) A few are younger. Many are silver maple and 3 are Norway maple. One is unknown maple.

Usually in spring, we get quite a lot of green seeds that look like wings. In the fall, we get thousands and thousands of brown seeds- also wing shaped. (Helicopters?) I rake up enough to fill at least 10 of those 50 pound paper leaf bags.

Both this spring and this fall, we had zero seeds. None at all. The neighbor mentioned the same thing. In spring we did have the little, brown crumbly things that normally fall from the trees, but I paid no attention if they were more or less plentiful than usual.

Could the weather be the reason?
Last winter, we had slightly warmer than normal temperatures. Days averaged in the mid to high 20's-F and nights in the 10's or single digits. We had a few days below 0-F. I didn't notice any days above 32-F until March.

In March, it rained or snowed about half of the days. In April, we had some rain most days. In June, it rained every day. In July and August, it was hot in the 80's and 90's-F, but also had many days of rain. (Enough that I watered the gardens perhaps 5 times all summer)

The tees had their usual copious amount of leaves. However, this year they didn't turn red. One tree's fell while green and early- in October. The others went from green to brown without stopping at orange or red like usual. One still has leaves, despite it having been below freezing for a week or so. (This particular Norway usually is the last to drop leaves, but not generally this late)

To Compare To Other Plants:
The privet hedges' leaves are still green, but they often turn & drop late. The vegetable plants never died this year, despite many weeks with below freezing temperatures. (Fruits froze, but plants still are supple and green.) The four 5 year old asparagus never did show up this year, but that may be not related at all.

Oddly, and maybe unrelated, my pine trees had very, very few pine cones this year. Perhaps I raked up a dozen all summer. Normally, I'll get enough to more than fill a leaf bag during summer.

Do you all think the weather is the cause for no seeds and odd leaf colors? If not, what do you suppose is the cause?

Thanks for helping solve this mystery!
Paul
 

Meadowlark

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Do you all think the weather is the cause for no seeds and odd leaf colors? If not, what do you suppose is the cause?
I only have one Maple tree, but many acres of other trees and I see a wide variation from year to year in the number of seeds they give off. I attribute weather as the main cause of the variations. Also, since others in your area are seeing the same thing, that also points to weather.

In answer to a question, my AI says,

"Yes, weather can indeed impact seed production in maple trees. Several weather-related factors can affect the development and viability of maple seeds:
  1. Temperature Fluctuations: Maple trees require specific temperature conditions for optimal seed production. Extreme heat or cold can hinder seed development.
  2. Insufficient Snowpack: A healthy snowpack provides insulation and moisture for tree roots. Without enough snow, trees may struggle to absorb water, affecting seed production2.
  3. Rainfall Patterns: Adequate rainfall is essential for healthy seed development. Both drought and excessive rainfall can negatively impact seed production.
  4. Late Frosts: Unexpected late frosts can damage maple blossoms, which in turn affects seed production for the following year."
 
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Yes, trees don't always set seed. When they have no stress that year, they don't need to.

We had a very wet year a few years back, not an acorn one in the yard. The year before, it was a drought, you could barely walk under the oak trees that year, it was like walking on ball bearing there were so many. You took your life in your hands walking under there. We scooped up wheelbarrows full of acorns.

Nothing to stress over.
 
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Thanks to you both for replies.
It's interesting what you wrote, Meadowlark, about the weather. The trees encountered all four or the requirements you listed last year. Numbers 1 and 3 were extreme this year. Very strange weather.

Thanks AnnieKay for explaining about stress. I never knew that they needed stress to produce seeds. Perhaps next year I'll give my vegetables some stress because they sure weren't generous with flower production last summer.

Thanks Again!
Paul
 
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Yes, trees don't always set seed. When they have no stress that year, they don't need to.

We had a very wet year a few years back, not an acorn one in the yard. The year before, it was a drought, you could barely walk under the oak trees that year, it was like walking on ball bearing there were so many. You took your life in your hands walking under there. We scooped up wheelbarrows full of acorns.

Nothing to stress over.
Hahaha. I like the "walking on ballbearings" part. Thanks for that imagery.
 

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