Xref: news7 rec.gardens.edible:52112

I have three plum trees in my yard and two of them(a Methley and Santa Rosa)
don't have any buds and all and are putting out leaves.I have a purple leaf
plum that is loaded with buds and located about 30 fteet from the others.I
haven't experienced any problems with them in the last 3 years.Any idea why
this would happen?I'm stumped.....

Thanks