The attached research summary suggests that the use of nano-silver particles in the vase water will increase vase life in peonies by 4 days. It does this partly through reducing bacteria in the water that can plug up the stems, as well as influencing the water balance in cut stems. The article includes a lot of links that explore the environmental concerns of using such chemicals.
Posted by: HortAlaska | August 21, 2018
More interesting methods of prolonging vase life in peonies
Posted in Vase Life
HortAlaska Peonies 
Only a 4 day increase in vase life? How does that compare to increased vase life due to keeping peonies chilled for 48 hours at +33F, for example. Any idea on the cost of this nano-silver process?
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By: akteacher on August 21, 2018
at 10:46 PM
Good questions, when you consider the entire life of a cut flower is 7-10 days, adding 4 days to that total could be significant. I don’t know a source. However, other silver chemicals used to extend vase life have caused environmental concerns, especially with disposal of unused chemicals.
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By: HortAlaska on August 29, 2018
at 5:14 PM
Yep, I wondered about that as well.
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By: akteacher on August 29, 2018
at 10:05 PM