My back yard is against the hill so it has a slope which is covered by ivy. I want to know if I should remove all ivy. I do notice some dead trees not sure if it is because of the ivy. Also if i remove the ivy what can i plant in its place to help with soil retention and water run off since we have lots of rain in oregon. Please see pictures
What to Do With Ivy on Slope?
Ivy is a real problem in the PNW and other areas, as you know. I don't believe it is responsible for the dead shrub. It kills trees and other growth by covering the leaves which prevents photosynthesis. As you know, this is a massive undertaking. Pulling ivy will result in regrowth if bits of root are left behind. Herbicide might take repeat applications; choose a product that is labeled for English ivy and follow instructions. There are erosion control measures you can employ. Here is a rundown of natural products: https://depts.washington.edu/propplnt/Chapters/erosioncontrolchapter%5B1%5D.pdf. There are also manmade products you can see here: https://www.newpig.com/pig-blue-absorbent-sock/p/4048?couponCode=PLAHOODIE&gclid=EAIaIQobChMIsMS2-v252gIVVbXACh01vAXyEAQYASABEgLywvD_BwE. Planting as you clear the ivy will help, too of course. Another strategy is to use one of the erosion blankets, wait 2 weeks for the ivy to re-emerge and get it again. It isn't a site that will be easy to tend which makes native plants, grasses and shrubs ideal. They need minimal care once established; watering the first year and trimming back in spring are about it.