I received an in game announcement that a new Pollen Dragon is available for breeding. What is the best pair for breeding? What is the breeding time (so I know if I was successful)?
How to breed a Pollen Dragon
dragonvale
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It appears the first and probably only combination is Snow and Seaweed dragons as per the Dragonvale Wiki. Note there was only one combination for the last gemstone dragon so I wouldn't try other pairings. The Pearl Dragon incubation time is 30 hours; since no other dragon has a 30 hour incubation time you'll know you got it just by the time.
Remember you can not breed gem dragons with any other dragons. Even if you have two Pearl dragons they can't breed with eachother.
Looks like it can be bred already; it's in the Market and people are already reporting successful breedings and there are already egg pics:
To breed a Quicksilver Dragon all you need is to try and breed a Metal Dragon with a Water Dragon. Note that you might also get a Rust Dragon. It's breeding/egg time is 18 hours. If your breeding time is 6 hours, you got a Rust Dragon instead.
Note Water/Metal hybrids also work when breeding, but hybrids have a munch lower chance of getting you a Quicksilver since they can result in other combinations.
Best Answer
From the Dragon Vale Wiki
And the breeding time is 7 hours whereas the Willow Dragon is 8 hours.