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Air prune beds

Posts: 3556
Location: Kingston, Canada (USDA zone 5a)
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Taprooted trees are hard to propagate in a nursery setting. As soon as you dig them out, you disturb the tap root, which might stop it from growing, or worse, you might break the tap root altogether.

The ideal way to propagate taprooted trees is therefore to plant them where you want them and never move them again. However, it is not always possible or practical. For instance, nut trees are an easy prey to squirrels and chipmunks if not protected. When trying to propagate thousands of them, it is much easier to plant them in a nursery bed and protect them, which means you need to transplant them and run into the whole taproot issue.

Akiva Silver from Twisted Tree nursery made a short video showing his air pruning beds for growing taprooted trees. The idea is that the mesh at the bottom exposes the roots to air which stops it from growing.

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Location: Eastern Kentucky, 6A
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I love Akiva's selection (I've ordered seeds; no trees yet), articles, and videos. I'm looking forward to his book.

I haven't been able to find much detail on how to build an air prune bed like this. I'd pay Akiva good money for an ebook.
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Location: Toronto, Ontario
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Air pruning this way sounds great. I have to give it a try on my scale.

My much better half and I start every avocado pit we get. This started as an art exhibition involving large glass orbs showcasing root zone development.

We now have over a dozen potted plants, with the oldest, at four years old, taller than me.

Would it work, though, to start the pits in tall tubes or open-bottomed pots sitting on mesh over a drip tray?

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