I have found nothing to indicate 'Broadmoor' is anything other than
dioecious,
Monoecious cultivars seem to be exceedingly uncommon.

Please explain. We are talking about a cultivar, which in this case is a clone,
vegetatively reproduced. All the Broadmoors in the world are part of the same
plant. Therefore they would have to be either all female or all male. I would
imagine that there is no such thing as a monoecious juniper cultivar, since it
never occurs in the wild.
Iris,
Central NY, Zone 5a, Sunset Zone 40
"If we see light at the end of the tunnel, It's the light of the oncoming
train."
Robert Lowell (1917-1977)