red onion poor germination

does anybody else experience poor germination with red onoins compared to white we have good germination with Ailsa craig but very poor with Red Burgundy have messaged seed company they are looking into it [virtually zero on red]??.

what i didnt mention we took half a dozen large Ailsa craig and replanted them last year letting them go to seed we collected lots of seed these germinating quicker and more than bought seed i think how fresh the seed is has a lot to do with germination   how old is the seed we buy??.