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Sowing Acorns, Growing Oak Bonsai 9 years 4 months ago #6199

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Bonsai trees from Oak may be tricky. Oak have a deep tap root, and will therefor need a serious root-trimming when collected from the wild. But even when one sows and acorn, the taproot may grow quicker than the above-ground sapling. So preparation is required when sowing oaks.

What is do is sow the acorn on top of a tile, burried in the ground; just like you would do when planting saplings in full ground to grow a trunk. On top of the tile I place a thin layer fo soil (Maybe 1cm) and place the acorn under a topdressing of 5cm. When the seedling germinates, the root will encounter the tile, and grow sideways. This will create a nice flat root system.

As soon as the sapling is >10cm, I place the first wire on the plant and give the trunk a twist for an interesting shape when the plant grows up. As soon as the shape has set (Typically after 1-3 months) I remove the wire, and take the sapling out of the ground. At this point I already clip of the growing tip of the taproot, to stimulate side-roots. I then place the sapling back in the ground, quite deep, with the roots on top of a impenetrable layer, such as plastic. This will keep the roots growing flat.

Images of a sapling I just dug up today.:



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Sowing Acorns, Growing Oak Bonsai 9 years 4 months ago #6201

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Have you ever tried to do a scrub oak? I have been thinking about doing one but haven't taken the time to do any research.

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Sowing Acorns, Growing Oak Bonsai 9 years 4 months ago #6202

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What is a scrub oak?

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Sowing Acorns, Growing Oak Bonsai 9 years 4 months ago #6209

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That is all I have ever heard them called. They grow in a grove (thicket?).
They never get huge like a normal oak. I think they are more like a schrub but more sparce. They get very gnarly bark as well. I also think they naturally propagate from suckers. I have never seen one taller than 10 feet. Here are a few pics.

1. closeup of bark
2. a couple trees, sorry no pics of green foilage, but they do have oak shaped leaves
3. grove in foreground.

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Sowing Acorns, Growing Oak Bonsai 9 years 4 months ago #6210

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Seems like a great species, and the grove you show has nice specimens. I do not know the species though :|

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