Greetings,
Regarding how long one can keep cuttings stored in your refrigerator, I found this on GardenWeb site, but can't verify the veracity of the content:
"...........it is advised to clean the cuttings before storing them and again before rooting them. First scrub the cuttings with a toothbrush and anti-bac dish soap, rinse them under tap water, and then spray or dip them in 10% (1 part plain Chlorox bleach and 9 parts tap water)bleach solution. Allow the cuttings to dry after the bleach dip and do not rinse them under water after bleaching. Many have successfully rooted cuttings up to a year or more stored in the refrigerator this way but the longer you store cuttings, the more difficult it becomes to root them. "