Fall pollen collection

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jrichardson
Posts: 226
Joined: Mon Dec 19, 2011 2:37 pm

Fall pollen collection

Post: # 73333Post jrichardson
Mon Oct 11, 2021 9:32 am

I am in Zone 8, Central Texas. I was wondering if anyone has had any success collecting pollen in the Fall and freezing it to use in the Spring?

Joan Richardson

roseseek
Posts: 5283
Joined: Sun Dec 11, 2011 6:54 pm
Location: Zone 9b Central California, Sunset Zone 15

Re: Fall pollen collection

Post: # 73336Post roseseek
Mon Oct 11, 2021 3:59 pm

Here in Zone 9b, Central Coast California where we seldom have "heat" and it remains "cool", I have collected pollen nearly year round and stored it on flat sheets of computer printer paper in the formal living room in the house. The temp remains in the mid to high sixties in that room. There are no breezes to blow it off nor any tails or other physical disturbances to knock it off the flat surfaces. For type such a Minutifolia and Stellata mirifica, I will collect it when it appears, store it on the paper and use it when the desired seed parents flower. I get crosses between the two from that pollen, so it obviously remains viable in these conditions.
Kim
California Central Coast
USDA Zone 9b
Sunset Zone 15
Cooler inland coastal valley with strong marine influence

MidAtlas
Posts: 104
Joined: Mon Jan 28, 2013 8:49 pm

Re: Fall pollen collection

Post: # 73338Post MidAtlas
Mon Oct 11, 2021 10:33 pm

I freeze pollen all of the time for later use--from fall to spring is no problem whatsoever, and it will keep well for at least a few years if well-sealed. I know that some go to the trouble of using vials and desiccants, but I have perfectly good luck just drying anthers on aluminum foil (preferably heavy duty foil or a double layer of ordinary foil, shiny side up), which I fold after drying into an envelope and label before sealing in a small individual plastic zip-seal bag and then placing with others in a larger plastic zip-seal bag (freezer style preferred, if available), pressing out most of the air before freezing. Just make sure to warm the individual plastic bag of pollen to roughly air temperature before opening it, in order to avoid having any atmospheric moisture condensing on cold pollen, which will affect its viability and usability. I usually just press the bag gently against my chest for a second or two or wave it around in the air until the foil inside no longer feels cold. If you're careful, you can use and re-freeze that same packet of pollen multiple times with little loss of viability.

Stefan

chuckp
Posts: 261
Joined: Mon Aug 26, 2013 10:40 pm

Re: Fall pollen collection

Post: # 73346Post chuckp
Sun Oct 17, 2021 11:12 am

Hi Everyone,
I have been freezing rose pollen for years now. I am one of those people who go to the trouble to
make sure I follow the highest protocol to make sure that stored pollen stays viable.
Here in Canada the availability breeding stock is becoming a minor crisis and with very short growing season, I take no chances.
I keep my pollen in small vials in 2 litre containers with satchels floral drying crystals.
When I retrieve the containers from the freezer, I always wait about half hour before opening the containers
this allows the containers to acclimatize thus avoiding damage to the pollen grains.

PS: Has any lab work been done on best practices?
chuckp

jbergeson
Posts: 1423
Joined: Thu Dec 15, 2011 11:54 pm

Re: Fall pollen collection

Post: # 73354Post jbergeson
Mon Oct 18, 2021 4:49 pm

I haven't tried late summer pollen collection, but you guys are giving me crazy ideas. I wish I could make rose breeding my only job!

My regular procedure for spring pollination is fairly stringent. I bought little glass vials with tight lids. I dry the anthers first and then use a fine tea strainer and a funnel to filter pollen down into the vial. I have these neat little blue dessicant beads that turn clear/pink when they absorb moisture, and I put 8-10 of those little blue pebbles down into each vial. If I'm not going to use the pollen immediately I put the vials in the freezer, even if it is just one day.

roseseek
Posts: 5283
Joined: Sun Dec 11, 2011 6:54 pm
Location: Zone 9b Central California, Sunset Zone 15

Re: Fall pollen collection

Post: # 73355Post roseseek
Mon Oct 18, 2021 5:18 pm

Joe, do you have any "head shops" there? You can easily obtain fine mesh filters they use to filter out the cannabis oil that will nearly filter fine enough to only allow pollen through. I found some when I was trying to figure out how to filter the pollen to make it legal to ship to Australia. They were something like $14 for three and made of stainless steel.
Kim
California Central Coast
USDA Zone 9b
Sunset Zone 15
Cooler inland coastal valley with strong marine influence

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