There was some discussion earlier in this thread about pollinator partners for Strawberry Sensation. I tried to pay a little attention this spring to what bloomed at the same time, so here are my impressions from Zone 5 Southern Vermont after a slightly milder than average winter (-15F) and a somewhat slow to warm up spring.
Strawberry Sensation is definitely one of the late bloomers, and probably best pollinated by Maxine Thompson’s Japanese varieties. But although it starts blooming later, it does have decent overlap with the Boreal series from USask. There was very little overlap with the “early” Russian varieties, although Berry Blue/Czech 17 did keep blooming long enough that there probably would have been some pollination happening.
In general, my conclusion (at least for this year in my zone) is that the Bloom Chart from HoneyberryUSA is pretty accurate as far as the order things bloom, although (at least for this year) my Early’s and Mid’s were fairly simultaneous (~May 7-10). The Late’s peaked about a week later (~May 14-17). The later USask varieties (like Boreal Beauty) had a reasonable number of flowers in common earliest of Thompson’s varieties (Solo and Kawaii), but Thompson’s varieties and Strawberry Sensation should ideally be considered a separate pollination group.
(I don’t have Blue Moon/Blue Sea, which Bernis shows as even later)