Toxic is the pet-lane poison tag at ×14 — environmental value from swamp or toxic pets near crops, not a growth sheen and not a thunderstorm prize.
Mutations text: applied by toxic or swamp pets near crops. Toxic Mist weather also lists Toxic among its bonuses, so pet adjacency and mist windows are the documented paths. Skip invented proc-rate tables for specific named pets the mutation entry does not name.
Weather tie-in: Toxic Mist · Full mutations guide
Toxic is environmental (pet category) at ×14 and stackable in the env bracket. It can sit beside Corrosive (×29), Infected, or Radioactive when those tags truly land. Growth stays exclusive — Overgrown is growth (×5), not an env partner, so it competes with Golden or Rainbow rather than adding beside Toxic in the growth lane. No Toxic-specific conflict pair is listed.
Grow a Garden mutation calculator · Crop value calculator · Mutations list & multipliers guide
Toxic applies a 14× multiplier in the pet bracket. The table below shows the value it adds to a reference crop (base 50) across common harvest weights, so you can gauge how much this tag is worth before chasing it.
| Weight | Base crop value | With Toxic (14×) | Value added |
|---|---|---|---|
| 1 kg | 50 | 700 | +650 |
| 2 kg | 200 | 2.8K | +2.6K |
| 5 kg | 1.25K | 17.5K | +16.3K |
| 10 kg | 5K | 70K | +65K |
Toxic alone: envBracket = 1 + (14 − 1) = 13. Adding Corrosive (×29) yields sum 43, count 2, envBracket = 1 + (43 − 2) = 42. That is bracket addition, not ×14 × ×29.
Keep toxic or swamp pets on the tiles you intend to harvest during Toxic Mist if that weather is live. Pet-category origin means roster placement matters even when the mist row also mentions the tag.
Players often pair Toxic flavor with Overgrown humidity lore. Overgrown is still growth: it cannot stack with Verdant, Golden, or Rainbow. Toxic does not spend the growth slot, so a Golden + Toxic harvest is legal when both procs exist.
Trade screenshots should show the Toxic icon and any assisting pet context. Hazard themes sell; invented nuclear schedules do not.