Beginner Gardening: Zone 5 Rapid Ground Cover, 1 by PatsyK9

PatsyK9 wrote:
I have 3,000 sq ft of perennial gardens and over 135 different species just recataloged this fall. However, I have just spread weed killer on a sloped area between my house and the neighbor - full of all sorts of heavy weeds and vines. Once the area is plantable again in a week or so, I'd like to put in a fairly rapid growing ground cover in hopes of keeping too many seeds from floating in there and establishing. Most of my current ground covers take about 3 years to really get going. Is there anything you can suggest or should I cover with black plastic and replant small areas at a time?? Thanks for your kind consideration.