Here is a photo from a Riviera bermudagrass seeding project on June 7, 2012:
Here is a photo from June 23, 2012 of the same field as above:
Here is a photo of a Riviera bermudagrass taken June 23, 2013 - field seeded in late May 2013:
Below is a photo of a Patriot bermudagrass field taken June 23, 2013 - field sodded in June 2012:
Bottom line, bermudagrass seed is slower in 2013. Based on the photos above, it is about 2 weeks slower. Bermudagrass established before 2013 is doing well.
Patience is needed, by August 1, 2013, this newly seeded bermudagrass fields will have 100% cover.
Go to j-dturf.com to learn more about J&D Turf.