If your onion is not growing, check in this order: soil composition (wrong mix is the top cause), planter volume (too small for the stage), light (not enough sunlight) and temperature. Fix each one and the plant resumes growing; unknown 1.0 values stay marked unknown.
Care profile
| Dimension | Requirement | Evidence |
|---|---|---|
| Planter | Fits its stage; transplant when prompted | OBSERVED (1.0) |
| Soil | Correct component targets; wrong soil stops growth | PARTIAL — exacts pending |
| Light | Sufficient sunlight for the location | OBSERVED (1.0) |
| Temperature | Within band; extremes stall growth | PARTIAL |
| Water | Consistent; health page for symptoms | OBSERVED (1.0) |
Why isn't my onion growing?
Check the soil
Repurposing a planter for a different crop fails if the soil composition is wrong. The game says to dilute or add components — match the targets shown for onion.
Check planter size
Stages can require a bigger planter. Transplant when the prompt appears; ignoring it stalls progress.
Check light & location
Onions need enough light. Rooms and shelves vary in light and temperature — see the not-enough-sunlight guide.
Verify with Plant Info
When in doubt, the in-game Plant Info screen is the current-version source of truth. Our dataset mirrors it.
Player-reported cases
Launch-week community threads report onions stalling after planter reuse (soil composition warning) and during low sunlight periods. Both match the causes above.
Cause list is consistent across current 1.0 reports and observed gameplay. Exact numeric requirements are pending capture and displayed as unknown where unverified.
Community discussion on planter reuse confirms the 'soil composition wrong' blocker in the 1.0 build.
If you find a cause not listed here, it is added to the problem database and linked from this page.