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Hoar Frost vs. Rime Ice
Few PEI scenes are more beautiful than frosty winter mornings like the one we had last week. Under certain conditions, ice crystals coat trees, twigs, and fence lines, turning the landscape into something magical. We call this ‘hoar frost’, but there are actually two very different types of ice that cause this phenomenon. Let’s take a look! ‘Hoar’ is an old word for feathery white, like a beard. It’s an apt description for the delicate, feathery ice crystals that form true
katemacquarrie22
Feb 152 min read


A Year-end Thank You!
It’s been a busy year: more than 100 educational posts on the plants, fungi, and wildlife of PEI; 79 in-person events at 25 locations across the province; and one popular new book! I sincerely thank the more than 2,000 people who attended my public walks and talks, the 17,500 who follow me on Facebook and Instagram, everyone who visits this website, and all those who took the time to like, comment, or share my posts. I’m truly grateful to each of you for supporting this work.
katemacquarrie22
Dec 7, 20251 min read


Holey Rocks
PEI’s shores are full of interesting finds, including holey rocks like this one. At first glance, you may think this stone was shaped by waves and tides, but the creators of these holes are biological, not physical. Rocks like this are sometimes called witches’ stones, hag stones, or adder stones, although those terms are more commonly applied only if one or more of the holes passes all the way through. According to legend, witches’ stones bring good luck by letting only good
katemacquarrie22
Oct 22, 20252 min read


Pebbles
Too often, I hear people say that PEI is geologically dull. Sure, our bedrock is all sedimentary sandstone (except for the igneous Iron...
katemacquarrie22
Aug 17, 20253 min read
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