0% germination, what am I doing wrong

A meeting place for rose breeders.
Post Reply
pmutalik2000
Posts: 11
Joined: Thu Oct 15, 2020 10:29 pm
Location: Massachusettes

0% germination, what am I doing wrong

Post: # 72362Post pmutalik2000
Sat Nov 14, 2020 12:32 pm

Stratified the seeds for 7 weeks and then planted in seedling mix, its been more than 4 weeks so far and there is no sign of any germination. Temperature in range of 65 - 70, soil is moist but not wet. Had planted some daylily seeds at the same time and those are doing just fine. So do I just need to wait for some more weeks?

pmutalik2000
Posts: 11
Joined: Thu Oct 15, 2020 10:29 pm
Location: Massachusettes

Re: 0% germination, what am I doing wrong

Post: # 72363Post pmutalik2000
Sat Nov 14, 2020 5:49 pm

There are about 150 seeds planted in case anyone is wondering.

jbergeson
Posts: 1417
Joined: Thu Dec 15, 2011 11:54 pm

Re: 0% germination, what am I doing wrong

Post: # 72365Post jbergeson
Sat Nov 14, 2020 7:38 pm

Seven weeks is not a super long time....any way to put the germination trays back in the fridge?

A lot will depend on the seeds, too. I often get zero percent from polyantha seeds, for some reason.

If you can find a seed and cut it open with a fingernail clipper (sacrificing it as you'll probably damage the embryo) you'll be able to see if it is white and hydrated or squishy and brown (dead). That'll maybe help you decide whether the seeds still have the potential to germinate.

mntlover
Posts: 269
Joined: Sat Dec 29, 2018 7:11 pm

Re: 0% germination, what am I doing wrong

Post: # 72366Post mntlover
Sat Nov 14, 2020 7:47 pm

If you are able to cycle the trays in and out of the fridge, sometimes that can trigger germination.
Duane

Plazbo
Posts: 188
Joined: Tue May 09, 2017 12:18 am

Re: 0% germination, what am I doing wrong

Post: # 72367Post Plazbo
Sat Nov 14, 2020 9:37 pm

There's some research papers about germination being better below 15C and above freezing (so below 60F). Seems to generally hold true for me (I sow outside, often directly from hip in March/Autumn/Southern Hemisphere) and usually get a bunch of germination from April onwards (which is typically when night time temps drop below 15C...but it's also typically a "wet" period in a lot of rain so that could be a factor too) so maybe too warm?


jbergeson wrote:
Sat Nov 14, 2020 7:38 pm
A lot will depend on the seeds, too. I often get zero percent from polyantha seeds, for some reason.
They're a little iffy for me (but again, I'm lazy) but never 0%. I've started running them through the 'Angel Wings' seed strain because they germinate like weeds (and in this climate, seems I can roughly do 2 generations a year of 'Angel Wings', already have 3rd generation seedlings from 2nd gen OP...only started first generation in sept 2019), results pending from crosses.

pmutalik2000
Posts: 11
Joined: Thu Oct 15, 2020 10:29 pm
Location: Massachusettes

Re: 0% germination, what am I doing wrong

Post: # 72368Post pmutalik2000
Sat Nov 14, 2020 10:50 pm

Thanks folks. Cant cycle them in the fridge, but can put them outside where its in the high 30's to low 40's.

roseseek
Posts: 5197
Joined: Sun Dec 11, 2011 6:54 pm
Location: Zone 9b Central California, Sunset Zone 15

Re: 0% germination, what am I doing wrong

Post: # 72370Post roseseek
Sat Nov 14, 2020 11:25 pm

Be aware that rodents and many birds LOVE rose seeds and tiny seedlings. Using the weather to supply "winter" is perfectly rational. Hopefully, you can protect them against any creatures which would find your smorgasbord delicious.
Kim
California Central Coast
USDA Zone 9b
Sunset Zone 15
Cooler inland coastal valley with strong marine influence

Don
Posts: 1877
Joined: Wed Dec 31, 1969 7:00 pm

Re: 0% germination, what am I doing wrong

Post: # 72372Post Don
Sun Nov 15, 2020 9:45 pm

Drop the temp back to ice cold but not freezing for a few days then raise it to to 45 to 55 degrees and hold them there.

As Joe suggests you should check a few to make sure that you have viable embryos.

Where in Massachusetts are you?
What doesn't kill them makes them stronger.

pmutalik2000
Posts: 11
Joined: Thu Oct 15, 2020 10:29 pm
Location: Massachusettes

Re: 0% germination, what am I doing wrong

Post: # 72373Post pmutalik2000
Mon Nov 16, 2020 11:58 am

I am in Southborough, close to Framingham

Post Reply