At left, collards in 70%coir/30% perlite. On the right, 70%peat/30%perlite.
We're wondering if the coir mixture is wicking at all. After a heavy rain, the coir SIP perked up, but the plants in the peat mixture continue to outpace it.
Stay tuned for further updates...Bruce is testing other blends of coir+peat. For now, I'm extending our peat/perlite potting mix (on its third year) with a percentage of coir for current plantings...but not going the all-coir route.