Answer Question
For Senecio in a room with 60-75% relative humidity (lower in the winter) & low airflow, what's the ideal soil mix?
I live on the East Coast and use a Soltech grow light. I'm considering planting in all-pumice/perlite/lava rock, or 1:1 lava rock to a bagged succulent mix (coco coir, course pumice, sand, 'horticultural grit,' activated charcoal, worm castings). Using a fan for airflow isn't currently on the table, as I'm planning to put the succulents (String of Dolphins, String of Tears, Sedum 'Thundercloud') next to rhizomatous begonias. I MIGHT change this plan and give the succulents their own shelf so they can have a fan, but not yet.
