Ok...I have gotten some "twigs" off of forsythia bushes before and had gotten them started with no problem whatsoever! That was many many years ago. Now today...my 2 sisters have their own forsythia bushes and I got some branches off of them and tried to get them started to no avail!! What am I doing wrong? Is there a foil-proof way of getting these forsythias started?? Your help would be most appreciated! (I am in Zone 4(central Ohio) and it's past blooming time for forsythias now.) Thank you!!