We started building these in 2014. We're hoping to get them all finished and in place spring 2015.
They are 3 feet wide and either 9 or 12 feet long. They have a sub-watering and drainage system. After plants were established we only needed to water weekly or bi-weekly depending on rain during the week.
Weeding was simple. We strung the beds with a top water system used when the plants were young.
Email us at firstname.lastname@example.org if you'd like our plans for these or if you are in the Twin Cities and would like to stop out and see them. They are bit of work to put together, but function extremely well.
For the top watering we used combinations like the below from Rain Bird.
Full Circle Spray