If I had decent native soil I would add some of that too. I think adding perllite and vermiculite to raised bed is not an economical option and probably not necessary. Instead I recommend pine bark mulch ( finely crushed or very small nuggets ). It is better than peat moss (IMO) and it should cost less as well. Over the past 4 years I have built and filled close to 250 square foot of raised beds ( close to 7 cubic yard volume/fill). Most of the fill was garden mix , purchased by the yard. The rest was manure, compost, pine bark fine. And some native soil at the bottom.
__________________
Gardeneer
Happy Gardening !
|