Actually...all I have between my Swales is grass. I only began my permaculture adventure a year ago. I bought a house on 1.15 acres with absolutely no trees. Since then I have done a ton of work to my Swales, planting 30+ trees (production and support). Unfortunately, I haven't been able to do anything in between my Swales. Two jobs and a family of six. Lol
I have been taking a permaculture course for the past two months and we will be having a workday out here next Saturday. My instructor has a really good laser level so maybe we will see if I dug my Swales correctly. Hoping for good infiltration but after seeing all the water gathered at the foundation of my house I can see it is definitely running.