Weed membrane and perennials
I'm something of a gardening newbie, and I've been busy planting to help attract more butterflies and bees. I've been trying to make the garden somewhat low maintenance by using a weed membrane and bark to cover the beds, and by planting various shrubs. However, I've also started to plant a few perennials such as scabious for the insects. Am I right in thinking that these sort of spread out and grow in diameter over time? I think I've seen some like that. The reason is that I need to know how big to make the hole in the weed membrane - too big and weeds may grow around the plant, but I don't want to restrict the spread of the plant if that is what it'll do. Thanks.