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Death to all Holly?

Hey Casey and Alex! I'm a new ISA certified arborist for my municipality and one thing I hear a lot of is new residents wanting to clear cut their lot so they "can see it better". When their request is denied, I'm told that its "all invasives". Here's my question: when it comes to holly, how do you discern English holly from American holly? I'm on the Olympic Peninsula and have seen several different varieties of holly. The older plats have holly that was purposefuly planted a long time ago, and of course the invasive English holly can easily be spotted in our forests. Thank you, Robin

Avoiding cross-contamination in specimen collection

If I want to start a cone or leaf collection, what would I need to do with the specimens I collect to keep from importing insects or diseases from other regions into the environment where I live? In an unrelated question, will Casey do the reading of the audio version of his book?

What would you like to see in a tree video game?

Hi Casey and Alex! Katie here, been listening to the pod for ages. I’m a software engineer, and the other night over dinner i was talking to my fiancé about how i’ve always wanted to work on a video game for fun in my free time, and he was very supportive of the idea. i said the only thing id want to make a video game about would be trees! in this hypothetical world where i somehow have extra free time what would you like to see in my tree video game? my only idea rn is like stardew valley vibes but you’re an arborist and tree lover and you have to protect the special trees of where you live from a predatory logging company. and maybe you’re also kinda magical and can speak to the trees. i think it would fun and cutie, and maybe there’s some kinda cone collection portion of the game! idk! i’m just thinking of ideas rn, what ideas do you guys have as tree experts and video game lovers! much love from florida 🫶🏼

Reading list

What would be on the syllabus if y’all taught an intro course on trees? What books and articles do you recommend for someone who wanted to take Completely Arbortrary 101?

Are there trees without roots?

Could a tree survive without them, even for a little while? I don’t want to make assumptions! (But I would like to use a metaphor— rootless tree— with a sense of accuracy).