if they just went into the jar, then bluntwiz is right, if you seal the jar, any
moisture contained within the buds will migrate outward and re-hydrate the
buds so that they will feel moist again.

it that's not the case then IAmKowalski is right although using an orange
peel will alter the taste of your buds, maybe not a bad thing, but very
definately different.

the best thing you can do, if possible, is to just put some moist buds in
with the dry ones, then, in a few hours, the moisture will migrate from the
fresh buds, to the dry buds

if that's not possible, put a piece of celery in with the buds, it will re-hydrate
your weed without altering the flavor.