It turns out that raspberry plants multiply like a weed. Initially they were in a 1ft x 6ft plot. Now they spread to the adjacent 8ft x 8ft plot.
I'm not complaining. I wish it were possible to move one plant to keep them a bit tidier and to make room for other plants, but I tried last year and the ones I moved remained miserable and ultimately died.
So I'm keeping them put.
But I'd like to stop weed from overtaking the space in-between.
How do I add a woven landscape fabric (with mulch on top) when there are existing tall raspberry plants? Do I estimate the location, tear a hole, and insert the tarp from the top? Would the holes then need to be too big (it's the first time I use tarp) and I'm better off just cutting from the edges and positioning the fabric right next to the stems? The plot is otherwise organic. Would mulch that's color-painted leach some nasty chemical on the raspberries?