Bleeding Of New Cedar Clapboards ?

Hello:

Will be having new horizontal Cedar clapboards put up in a few weeks. They will be pre-primed, front and back.

Trying to get a bit of a heads up regarding the painting of them afterwards.

The contractor said that "sometimes" there is a bit of bleeding from the Cedar clapboards, thru the primer, once they are up. He also suggested waiting a few weeks before any painting.

Questions:

a. If so, what should be done about this prior to painting ?

b. Or, will the paint (probably 2 coats of latex) cover up any bleeding "for all time" ?

c. No matter what is done, is it likely to continue to bleed again (thru the new paint) ?

Any thoughts on all of this would be most appreciated.

Thanks, Bob