Onion sets not bulbing up
I'm in the San Diego area and I got a pack of onion sets from a nursery and they were planted end of January I think. Anyway, they grew and grew and we've used the shoots for cooking and they were beautifully blue/green but now as the weather is getting warmer, they are losing their lush look and looking a little tired although I wouldn't say they are turning brown yet.
I'm wondering if they should have bulbed up by now. For Jan/Feb/March it would get down to high 40s sometimes at night but now it just gets into the 50s.
I know about short day vs. long day onions but I figured the ones I bought from the reputable nursery would be the correct ones for the season. Thanks!