Quote:
Originally Posted by barbc
Hoping to kill two birds with one stone. We have some soil that has red lava rock mixed in. 1" size. Can I add lava rock to my potted banana medium instead of say perlite, or in addition to, to improve drainage? I hate spending so much on perlite because it feels like you're buying a bag of air for $4.50, even at Walmart (cheapest I can find so far).
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I my opinion yes the lava would enhance the drainage. It would be better to crush into smaller pieces. The more rock or sand you use the more frequently you need to water. Every two to three day. Not a lot just to keep moist. Mulch helps retain the moisture
