Category Archives: Plants

What are these bubbles all over the lake?

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bubbles on a lakeThe Question: In early June, I took a kayak trip on Winton Lake, starting out before sunrise and getting to the area where these photos were taken just as the sun was coming up. There were green bubbles all over the lake. After the sun came up, they began to break up and were gone within about an hour after sunrise. I’ve never seen anything like this on any lake I’ve ever paddled and I’m very curious what could cause it! Can you supply any answers?
Submitted by: Mark, Ohio, USA

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What is this burr sticking to my shirt?

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small green burrs
garden burrs

The Question: I’m trying to identify the burr/seed in this photo. I think it’s from a weed I’ve been pulling from my flower garden. I pulled off about 100 from my shirt. They grip like iron!

Submitted by: Jane, southwestern Connecticut, USA

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Who made mysterious rectangular tree holes?

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rectangular holes in reddish tree trunkThe Question: I found these holes in a single tree, amidst dense forest. They were freshly made, with no sign of human footprints (there was snow), but no animal tracks either. They look very man-made, but could not have been. They appeared in a 24 hour period. Could you shed any light on them please?

Submitted by: Mark, British Columbia, Canada

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Why does the snow melt in circles around trees?

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trees with melted snowThe Question: Why do my trees have a clear area of snow around them when it warms up a bit. Are they warm? Do they give off or absorb heat? The clear area is anywhere from one to three feet around the base of the tree.
Submitted by: Raymond, Michigan, USA

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