Roses forum: Why won't any Rose seeds germinate outside?

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Name: Keith
West Babylon, NY (Zone 7a)
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keithp2012
May 9, 2017 12:57 PM CST
In November I harvested rose seeds from about 10 different rose plants. I opened the rose hips and rinsed off the seeds, then put them in pots with good draining potting soil, barely covered them, and left them outside all year through fall, winter and spring. Nothing has germinated?

Everything I read said the seeds germinate best outside, and we had plenty of snow, ice, rain, and wind to break down the seed coat. Rose plants outside are full and green, so shouldn't the seeds have germinated by now?
Name: Daisy I
Reno, Nv (Zone 6b)
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DaisyI
May 9, 2017 2:00 PM CST
Three thoughts:

1. The seeds weren't mature enough when you harvested them

2. You inadvertently left some pulp on the seeds

3. The seeds were just too cold in the pots

If you feel that none of these thoughts were a problem, I would keep the pots watered and wait. They could be just taking their time.
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Name: Keith
West Babylon, NY (Zone 7a)
Zinnias Lover of wildlife (Black bear badge) Annuals Spiders! Hybridizer Garden Photography
Vegetable Grower Tomato Heads Native Plants and Wildflowers The WITWIT Badge Daylilies Dog Lover
keithp2012
May 10, 2017 12:28 PM CST
DaisyI said:Three thoughts:

1. The seeds weren't mature enough when you harvested them

2. You inadvertently left some pulp on the seeds

3. The seeds were just too cold in the pots

If you feel that none of these thoughts were a problem, I would keep the pots watered and wait. They could be just taking their time.


Everything was perfect, I might need to wait more.
Name: Porkpal
Richmond, TX
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porkpal
May 10, 2017 1:45 PM CST
I think one of our rose hybridizers needs to help you.
Porkpal
Sydney, Australia (Zone 10b)
Protoavis
May 11, 2017 5:36 AM CST
what color were the rose hips when you harvested?

what type of roses? Modern, Old, Species? (possibly name a few)

I live in a warmer climate so likely have longer seasons (and no snow/ice) so I can't really comment on the effects of that from experience but if it's too cold that apparently effects things (best germination is between 50F/10C to 70F/20C from what I've read). I personally harvest and sow by the end of the first week of autumn, germination will start about 2 weeks after and continue for months (although most will have germinated by mid autumn). The earliest (with repeat/continous bloom genetics) will often do their first bloom around 2 months after that (ie late autumn to early winter I have a bunch of seedlings at the moment creating their first buds)....but again no ice/snow to contend with and the coldest winter temperature for a few hours at night is maybe 40F/5C.

Depending on the rose types and their background it may have just been too cold and the freeze killed the embryo's or if they are species roses (or recent hybrids of) then the seeds can take a few years to germinate.


Anyone with oryzalin (aka Surflan, Embargo), am looking for a small amount rather than 5litres from manufacturer (min size in Australia....)

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