Every mutation and its multiplier
Mutations are rare variants that multiply harvest value. A mushroom can only hold one mutation at a time; two mutations never stack on the same cap. Harvesting any mutated mushroom grants 50% bonus XP. Mutated mushrooms also spawn clean, so you never need to wash off dust or mud before selling.
The table below lists all 19 mutations sorted from highest multiplier to lowest:
| Mutation | Multiplier | How it happens |
|---|---|---|
| Prismatic | x8.0 | Any mushroom, any time |
| Spectral | x8.0 | Only in Gloamwood, at night |
| Murmuring | x5.0 | Only in The Rootways: the mushroom is still saying its word |
| Crystal | x4.0 | Any mushroom, any time |
| Thunderstruck | x4.0 | Only when lightning strikes a mushroom in a thunderstorm. The charge lasts a few minutes. |
| Moonstruck | x4.0 | Under the Ember Moon (Lantern Wake). It fades when the moon sets. |
| Shadow | x3.5 | At night |
| Golden | x3.0 | Any mushroom, any time |
| Haunted | x3.0 | At night, during the Lantern Wake |
| Frosted | x2.5 | Any mushroom, any time |
| Albino | x2.2 | Any mushroom, any time |
| Candied | x2.0 | During the Lantern Wake |
| Luminous | x1.8 | At night |
| Shaded | x1.6 | In the shade: under trees and bushes, on trunks, logs and stumps (not in the rain). The rain washes it away. |
| Mossy | x1.5 | Only in Mossy Hollow |
| Sunkissed | x1.5 | In the open around midday, when the sky is clear. Clouds, rain or fog take it away. |
| Misty | x1.5 | In the fog. It fades when the fog lifts. |
| Dewy | x1.4 | At dawn, when it is not raining. The dew burns off in the middle of the morning. |
| Soaked | x1.3 | While it rains, out in the open. It dries once the rain stops. |
Because a mushroom never carries two mutations, x8.0 is the hard multiplier ceiling. Spotting an 8x Prismatic or Spectral specimen turns a standard run into an immediate high-value payday.
Weather mutations disappear when the weather changes
Whisperwood operates on an active environmental cycle. A full game day lasts 16 minutes: 11 minutes of daylight and 5 minutes of darkness. Weather shifts regularly across the surface:
- Rain rolls in every 10 to 20 minutes and lasts for a few minutes. Rain mushrooms sprout across fields, and open-air mushrooms can take on Soaked (x1.3). When rain stops, Soaked mushrooms dry up and lose the multiplier.
- Thunderstorms occasionally develop from showers. Lightning can strike a mushroom near a player, producing Thunderstruck (x4.0). The charge lasts only a few minutes.
- Fog rolls in at dawn or dusk briefly. It produces fog mushrooms in Gloamwood and allows surface mushrooms to gain Misty (x1.5). Once fog lifts, the mutation fades.
- Dawn dew coats mushrooms at sunrise on clear mornings, producing Dewy (x1.4). Daylight burns this moisture off by midday.
Weather mutations stick to mushrooms rooted in the soil. If weather clears while a mushroom remains unpicked, the modifier vanishes. The moment you harvest the mushroom into your backpack, the mutation locks in permanently. When storms hit, prioritize mutated specimens immediately. Review surface zone layouts on /map to plan quick foraging circuits during bad weather.
Time, place and event mutations
Beyond shifting weather, many mutations depend on fixed hours, specific regions, or events:
Nightfall activates two modifiers across all surface areas. Luminous (x1.8) and Shadow (x3.5) appear only during the 5 minutes of night. During clear daytime, direct sunlight around noon creates Sunkissed (x1.5) in the open, while mushrooms under tree canopies and logs receive Shaded (x1.6). Rain washes Shaded away, and cloud cover removes Sunkissed.
Three mutations are locked to individual map areas:
- Mossy (x1.5) grows exclusively in Mossy Hollow.
- Spectral (x8.0) appears only in Gloamwood after dark.
- Murmuring (x5.0) exists solely within The Rootways.
Underground regions follow unique rules. The Undergrove and The Rootways are enclosed caverns where surface weather never enters. You will never encounter rain, thunderstorms, fog, or weather mutations while foraging underground.
Seasonal events introduce temporary modifiers. During the Lantern Wake, mushrooms can gain Candied (x2.0) all day, Haunted (x3.0) at night, and Moonstruck (x4.0) whenever the Ember Moon rises. To structure routes around these windows, consult /guides/money-guide.
What a mutation is worth next to your cut
A mutation is the highest single multiplier in Mushrooming, but payout math multiplies it directly against age, cut grade, and cleanliness. Because of this, poor cutting technique damages high-tier mutations severely.
Consider a Rare mushroom with a $100 base price rolling an 8x Prismatic mutation in Fresh condition:
- Fresh (x1.25) + Pristine (x1.30) + clean (x1.00) + Prismatic (x8.0) yields $1,300.00.
- Fresh (x1.25) + Clean (x1.00) + clean (x1.00) + Prismatic (x8.0) yields $1,000.00.
- Fresh (x1.25) + Scuffed (x0.80) + clean (x1.00) + Prismatic (x8.0) yields $800.00.
- Fresh (x1.25) + Mangled (x0.35) + clean (x1.00) + Prismatic (x8.0) yields $350.00.
Botching the cut from Pristine down to Mangled on an 8x mushroom throws away $950 on a single stem. The mutation multiplies the cut grade rather than replacing it. Learning the cutting gauge in /perfect-cut ensures you collect the full value of every rare spawn. You can calculate payouts for any combination of species, age, and mutation on /tools/payout-calculator.