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Do seeds (Specifically gorse and Hakea) survive the charcoaling process?

 
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Hi there all

I feel like I ask a lot of questions here but for every question I ask there's a dozen I just google/youtube.

I am actually getting out and doing the work that needs to be done to get the property I live on to where I want it to be. We have two pesky plants in New Zealand where the seeds are spread through burning (Gorse and Willow-leaved hakea specifically). I have been interested in the concept of creating a small scale coal retort (edible acres is the reference I've been considering modelling something off) and it seems that any dried organic material would give of gasses and create charcoal. I am considering that I could dry the main leafy material of these plants (6 months to a year) and then turn them into a type of bio char but then worried if the seeds would survive that spreading that char around could then germinate the stuff I'm trying to get rid of.

I would assume that it would but I also know that the Hakea derives from an Australian species and those trees leak gasoline are built much differently to most plants.

The other options are:

Hot compost - I'd still feel like some seeds would survive the gorse can lay dormant for 30 years or so.

Stick it in the bottom of raised planter beds/hugel - I think that's a good idea but also there is a hell of a lot more material then I could conceivably put into my garden beds and if they were in a hugel and they can lay dormant for 30 years there's a chance that pockets of the hugel (it would have to be a giant thing to take all the weedy material I have on the property) open up and the gorse gets out and back out of control again.

Any thoughts experience something else I haven't considered would be helpful
 
Jared Bosecke
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Never mind I found the answer that I am looking for

A temperature of 100°C or more for 15 minutes is required to kill gorse seed. The heat should penetrate the soil by about 2cm during this time. Get the temperature wrong (too low) and you will actually encourage up to 100% germination of any gorse seed in the soil.

I don't know how to remove this post so I've marked as resolved
 
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