Rock Wool Medium

[Ray]

Originally Posted by The Peloric Orchid

For your phals growing in a rockwool/LECA mix, have you been growing them S/H or in traditional pots? And how might S/H vs traditional affect the ratio of rockwool to LECA you (would) use?

I guess I’ve “blurred the line” between S/H and traditional culture: At this point, all my phals are in 75% LECA + 25% RWC, in traditional pots, but they all are sitting in water for a day or two after watering, so have a temporary external reservoir. The bottom line is that, for growth, more water is better than less, BUT you must keep the medium airy.

In my (summer) heat and humidity, RWC addition is unnecessary in S/H, as the medium stays pretty much saturated, but I see no difference between those with RWC and those without. Winter is coming, though.