Spectral is the fog-ready ghost tag: event-category at 42×, transparent enough for spirit-week trades, and—unlike many rumor chains—actually listed under Fog in weather.ts beside Shadowed.
mutations.ts: ghostly transparent mutation from spirit events. weather.ts Fog lists Shadowed and Spectral. Use that fog bonus and the spirit-event description; do not invent Halloween calendars or pet-required ectoplasm radii the data files omit.
Weather tie-in: Fog · Full mutations guide
Spectral is event, stackable, environmental. Solo: 1 + (42 − 1) = 42. With Shadowed (13×): sum 55, n = 2 → 54. With Void (75×) as a second partner: sum 117, n = 2 → 116. Never multiply 42 × 13 × 75. Growth exclusivity still applies. Spectral has no CONFLICT_PAIRS row; Wet/Frozen and Ember/cold pairs only constrain other tags on the same crop.
Grow a Garden mutation calculator · Crop value calculator · Mutations list & multipliers guide
Spectral applies a 42× multiplier in the event 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 Spectral (42×) | Value added |
|---|---|---|---|
| 1 kg | 50 | 2.1K | +2.05K |
| 2 kg | 200 | 8.4K | +8.2K |
| 5 kg | 1.25K | 52.5K | +51.3K |
| 10 kg | 5K | 21K | +205K |
Fog’s mutationBonus string is Shadowed, Spectral—two separate environmental ids. Seeing both means sum-and-count bracket math, not a special ghost product. Corrupted (event) can join when spirit and corruption windows overlap; it is not required for Spectral to land.
Void from eclipse or Meteor Shower paths is thematic but independent. Dual Spectral + Void harvests need both icons visible; the catalog does not publish a dual-proc percentage.
Buyers want the Spectral icon plus weather or event context. Fog screenshots support the weather.ts path; spirit-event wording covers the mutations.ts path. Claiming year-round guaranteed procs contradicts the event framing.
Keep one growth mutation locked. Spectral never fights Rainbow for the growth slot. Count env icons carefully—an off-by-one on n warps the bracket far more than swapping a related-slug recommendation. Fog screenshots that show only Shadowed are not Spectral proof; both Fog bonuses need their own icons when you claim the dual pair.