Have access to this monster for some cuttings. Just arrived at shore house for va-ca and didn't expect setting up for cuttings. Not familiar with rm at all, no rooting powder, media or supplies. What's the best bet to last a week till I can get them back home, water or wet sand and what for rooting stimulation. This has been growing in my neighbors garden for +/-30 years. Thanks in advance, Happy 4th.