Not sure if this is the correct location to post this. I live on northern Vancouver Island. Behind my fence is a wood wall and a bank down to the street behind me. It have 3 decent sized alder tree on it that I use as a privacy wall. I have to weedeat the grass on the bank as a town rule which I hate doing so I'm looking to change it up and plant some flowering bushes or vines. What are some bushes or vines I can plant on a slope that are in shade about 60-70% of the day. Preferably flowering ones if possible. Also would I have to remove all the grass and what not that's there or could I just plant something that would take over? I can take a picture of the area if need be. Thanks. Travis.