We garden at our high rise senior community. On the 6th floor terrace we have a 150 foot long raised bed. Staff has given our group a large section to place cutting flowers both annual and perennial. It is now covered with Eunoymus Fortunei Coloratus. it has been in place three years. A leading member of our group thinks we should just plant in between this!..Won't that inhibit the perennnial plantinss. I would like to dig it out and give it to someone to plant on a hillside etc. What do you recommend?