GreenHands13
Active member
Imho I beleive its always best to use whats native to your area for example if your in the cascades lava rock is plentiful and should be utilized if you in the sierras dg is everywhere and should be utilized. No perlite pumice or lava rock for me im at 4600 on the east slopes of the sierras I have dg everywhere so my holes are cut with 25% dg. The reason I believe this is because in order for plants to properly uptake trace minerals they have to be chelated in order to be chelated you have to have the proper ligands in your mix. Native soils that are high in trace minerals contain all the ligands necessary for chelation. Keeping it local if you can is your best bet imo.