White Temperate Springtails — Folsomia candida

A small wingless arthropod, 1–2mm, white and soft-bodied, that jumps when startled using a spring-loaded appendage under the abdomen. That's the namesake. They live in the top layer of soil and have been doing it for roughly 400 million years — if you've ever pulled a plant out of the ground and seen tiny white specks scatter, you've already met them. Springtails eat what's breaking down in the top half-inch of substrate: mold, fungal hyphae, decaying leaf litter, algae, the film on the inside of the pot. They process the material that shows up before a pest problem does, and the material left behind after one. Maintenance staff, not a response — there's no infestation to time this against and no window where they're useful and then aren't. Folsomia candida is parthenogenetic. The culture is all female and reproduces without mating, so one jar is a complete founding population. It's also the designated test organism in ISO 11267, the international standard for measuring how soil contaminants affect soil fauna — a strange credential for something going into a monstera, but it means this species has been studied harder than most of the plants you own. They're standard equipment in the terrarium and dart frog world, where the cleanup-crew role is well understood. They just haven't crossed over to houseplants, though a pot of soil under a grow light is the same closed system with the same organic matter breaking down in it. Field Notes Species Folsomia candida Common name White temperate springtail Sold by Volume — 8 oz culture Substrate Charcoal Ships as Mixed-age culture: adults, juveniles, eggs Optimal temp 65–75°F (18–24°C) Moisture Consistently moist, never saturated Reproduction Parthenogenetic — all female Feeds on Mold, fungal hyphae, decaying organic matter, algae, biofilm Leaves alone Living plant tissue, roots, other invertebrates Refrigerate No Safe around Pets, children, amphibians, reptiles Keep separate from Stratiolaelaps scimitus and other soil-dwelling predatory mites