gardener survey: what is the soil profile at your place?
this is the soil profile at mine: https://soilseries.sc.egov.usda.gov/OSD_Docs/K/KEAUKAHA.html
TLDR: 0-4 inches of organic, on top of solid lava rock all the way down.
so my biggest challenge is building (and keeping) soil.
why "keeping"? because we get over 100 inches of rain per year, with year-round temperatures above freezing. so we lose a lot of soil in runoff and in organic processes (seriously, mulch just disappears...you're like "didn't i put mulch down?" but that was a whole 6 months ago, so it's probably gone now.)
the best way to retain soil here is to put plants on it, as soil will clump around the roots and the roots will hold the soil in place.
i'd love to learn about the soil profile at your all's places and what kinds of challenges you have in growing stuffs.