| Walnut Shells | Comments | 
|---|---|
| WALNUT SHELLS: As Potting Medium It is now available commercially in two sizes; refer to A85-516 | 0 | 
| WALNUT SHELLS: The Hulls as Potting Medium It is used as an additive or a replacement for perlite or bark and it has been suitable by some growers. OA82-8 | 0 |