Chewing On It

A meeting place for rose breeders.
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sarahconeill
Posts: 27
Joined: Wed Jun 21, 2017 1:01 pm
Location: Seattle, USDA-8b, Sunset-5

Chewing On It

Post: # 72748Post sarahconeill
Tue Feb 16, 2021 1:17 am

I've been more than a little frustrated that my species crosses were taking so long to germinate. After finding propagation protocols via the Native Plant Network, I think I'm going to be a little more aggressive with my seed coats. This is a very interesting (to me) link on native plant propagation protocols and of course a few rosa species are included.

https://npn.rngr.net/propagation/protocols

One of the issues is that I don't own a hammermill. (Who does?) And for some reason, the blender for seeds terrifies me. However, I did get my kids a rock tumbler recently so I might run some experiments on a bunch of seeds to see how it works out.

roseseek
Posts: 5245
Joined: Sun Dec 11, 2011 6:54 pm
Location: Zone 9b Central California, Sunset Zone 15

Re: Chewing On It

Post: # 72749Post roseseek
Tue Feb 16, 2021 2:11 am

The rock tumbler with an appropriate grit may well help! I have used soft pad sanding blocks, rubbing them together with seeds between them (irritating and awkward) as well as putting sandpaper in the bottom of a large pan and rubbing the seeds between the sand paper sheet and the soft sanding block with sand paper covering it. You would be surprised how much you can apparently remove when you aggressively grind away in a circular motion. I have used a blender to clean seeds from hips and fibers and it can destroy a number of seeds in the process, as evidenced by the half shells you find in the results. I've often added Comet or Ajax (both with chlorine bleach) to help abrade as well as sterilize the seeds. Of course they were rinsed well to remove the cleanser. I obtained a respectable germination from every batch I've used it on so I'm not aware of any disadvantages of the method.
Kim
California Central Coast
USDA Zone 9b
Sunset Zone 15
Cooler inland coastal valley with strong marine influence

John Moe
Posts: 447
Joined: Mon Dec 12, 2011 1:01 pm

Re: Chewing On It

Post: # 72751Post John Moe
Tue Feb 16, 2021 1:14 pm

Some of you may remember that, some years ago, one of our members used to feed his seeds to his pet doves. Apparently the digestive process did a good job of either softening or removing the seed coating. Then the fun task of collecting them.

roseseek
Posts: 5245
Joined: Sun Dec 11, 2011 6:54 pm
Location: Zone 9b Central California, Sunset Zone 15

Re: Chewing On It

Post: # 72752Post roseseek
Tue Feb 16, 2021 2:06 pm

And the nasty task of having to grow the birds. We have them as wild pests. That's is sufficient, thank you.
Kim
California Central Coast
USDA Zone 9b
Sunset Zone 15
Cooler inland coastal valley with strong marine influence

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