From Bulbapedia, the community-driven Pokémon encyclopedia.
Mulch (Japanese: こやし Fertilizer) is a type of item introduced in Generation IV. Mulch may be used before planting Berries in soft soil to promote healthy Berry growth in various ways. Mulch has no use in battle (aside from being thrown with Fling, in which case the move will have 30 Power).
If more than one Mulch is spread on one patch of soil, only the effect of the most recently used one will apply. According to the lady in the Berry Master's house in Sinnoh, Mulch is made "by mixing high-grade soil with Pokémon...um...you know..."
Mulch can be bought from the girl in the Berry Master's house on Route 208, or in the Goldenrod Flower Shop after acquiring the Berry Pots.
Due to the lack of soft soil in the Unova region and the fact that the Berry Pots are not obtainable, Mulch became a valuable item in Pokémon Black and White. In Pokémon Black 2 and White 2, Mulch can be sold to a Pokémon Breeder at the end of Mistralton City's runway for $1000 each.
In Pokémon X and Y, Mulch can be acquired from one of the Berry fields composters. By putting in different combinations of Berries, different kinds of Mulch can be produced. If traded to Pokémon Omega Ruby and Alpha Sapphire, Mulch cannot be used, as the soil is unsuitable for Mulch.
List of mulches
Generation IV mulches
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Growth Mulch すくすくこやし Rapid Fertilizer
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Price: $200
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Sell for: $100
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Effect:
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Makes growth time of a Berry plant 75% of usual, but causes soil to dry out 50% faster.
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Description
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DPPt
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A plant fertilizer spread on soft soil. It speeds up the growth of Berries. However, it also dries the soil faster.
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HGSS
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A fertilizer to be spread on soft soil. It speeds up the growth of Berries. However, it also dries the soil faster.
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BWB2W2
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A fertilizer to be spread on soft soil in regions where Berries are grown. A maniac will buy it for a high price.
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XY
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A fertilizer to be spread on soft soil in regions where Berries are grown.
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ORAS
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A fertilizer for growing Berries. However, it appears to be unsuitable for the soil in the Hoenn region and has no effect.
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Damp Mulch じめじめこやし Wet Fertilizer
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Price: $200
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Sell for: $100
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Effect:
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Makes soil dry out 50% slower, but causes growth time of a Berry plant to be 150% of usual.
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Description
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DPPt
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A plant fertilizer spread on soft soil. It slows the growth of Berries and causes the soil to dry slower.
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HGSS
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A fertilizer to be spread on soft soil. It slows the growth of Berries and causes the soil to dry slower.
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BWB2W2
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A fertilizer to be spread on soft soil in regions where Berries are grown. A maniac will buy it for a high price.
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XY
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A fertilizer to be spread on soft soil in regions where Berries are grown.
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ORAS
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A fertilizer for growing Berries. However, it appears to be unsuitable for the soil in the Hoenn region and has no effect.
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Stable Mulch ながながこやし Drawn-Out Fertilizer
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Price: $200
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Sell for: $100
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Effect:
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Makes Berries stay on plant for 150% of usual time before dropping off.
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Description
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DPPt
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A plant fertilizer spread on soft soil. It extends the time ripened Berries remain on their plants before falling.
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HGSS
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A fertilizer to be spread on soft soil. It extends the time ripened Berries remain on their plants before falling.
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BWB2W2
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A fertilizer to be spread on soft soil in regions where Berries are grown. A maniac will buy it for a high price.
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XY
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A fertilizer to be spread on soft soil in regions where Berries are grown.
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ORAS
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A fertilizer for growing Berries. However, it appears to be unsuitable for the soil in the Hoenn region and has no effect.
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Gooey Mulch ねばねばこやし Sticky Fertilizer
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Price: $200
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Sell for: $100
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Effect:
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Makes Berry plants regrow from dead plants 150% of usual number of times.
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Description
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DPPt
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A plant fertilizer spread on soft soil. It ups the number of times new plants grow where mature plants withered.
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HGSS
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A fertilizer to be spread on soft soil. It ups the number of times new plants grow where mature plants withered.
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BWB2W2
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A fertilizer to be spread on soft soil in regions where Berries are grown. A maniac will buy it for a high price.
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XY
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A fertilizer to be spread on soft soil in regions where Berries are grown.
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ORAS
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A fertilizer for growing Berries. However, it appears to be unsuitable for the soil in the Hoenn region and has no effect.
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Generation VI mulches
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Amaze Mulch とんでもこやし Outrageous Fertilizer
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Cannot be bought
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Sell for: $100
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Effect:
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When applied to a Berry patch, has the combined effects of the other Generation VI mulches: soil dries quicker, final harvest increases by 2 Berries, and Berry mutations are more likely.
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Locations
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XY
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Berry fields composter (using one Maranga or Kee Berry and two other Berries)
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Description
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XY
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Mulch to be used in a Berry field. An amazing Mulch with the effects of Rich, Surprise, and Boost Mulch.
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ORAS
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A fertilizer for growing Berries. However, it appears to be unsuitable for the soil in the Hoenn region and has no effect.
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Boost Mulch ぐんぐんこやし Increasing Fertilizer
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Cannot be bought
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Sell for: $100
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Effect:
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When applied to a Berry patch, causes the soil to dry out in 4 hours.
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Locations
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XY
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Berry fields composter (using two Berries of the same color and one differently-colored one)
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Description
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XY
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Mulch to be used in a Berry field. It increases the Berry harvest that can be grown by diligent watering.
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ORAS
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A fertilizer for growing Berries. However, it appears to be unsuitable for the soil in the Hoenn region and has no effect.
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Rich Mulch たわわこやし Laden Fertilizer
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Cannot be bought
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Sell for: $100
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Effect:
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When applied to a Berry patch, increases the final Berry harvest by 2 Berries.
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Locations
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XY
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Berry fields composter (using three differently-colored Berries)
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Description
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XY
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Mulch to be used in a Berry field. It increases Berry harvest without the need for particularly diligent care.
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ORAS
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A fertilizer for growing Berries. However, it appears to be unsuitable for the soil in the Hoenn region and has no effect.
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Surprise Mulch びっくりこやし Surprise Fertilizer
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Cannot be bought
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Sell for: $100
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Effect:
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When applied to a Berry patch, increases the chance of Berry mutation.
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Locations
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XY
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Berry fields composter (using three Berries of the same color)
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Description
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XY
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Mulch to be used in a Berry field. It causes strange, sudden mutations based on the combination of Berries.
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ORAS
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A fertilizer for growing Berries. However, it appears to be unsuitable for the soil in the Hoenn region and has no effect.
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Artwork
This is the artwork of the items as seen on the Pokémon Global Link.
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Amaze Mulch
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Boost Mulch
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Rich Mulch
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Surprise Mulch
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Trivia
- Because some Mulch can alter a Berry's growth rate, it is possible for some Berries with different base growth times to grow in the same amount of time. Similarly, Berries with the same base growth time can vary in actual growth time.
- Inside the Berry Master's house there is a book titled "Much Ado About Mulch: A Berry-Grower's Guide". The title of this book is based on William Shakespeare's "Much Ado About Nothing".
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