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A Mahogany Tree in Stardew Valley usually takes about 26 ± 12 in-game days to mature without fertilizer, or about 7 ± 2 days with Tree Fertilizer. These are typical times, not guaranteed deadlines: growth is probabilistic, so a seedling may not advance on a particular night.

Typical Mahogany Tree growth time

Growing method Typical time to maturity Nightly chance to advance Winter growth
Without Tree Fertilizer About 26 ± 12 in-game days 15% Generally pauses, except in the Desert and on Ginger Island
With Tree Fertilizer About 7 ± 2 in-game days 60% Yes

The timing and odds are gameplay figures reported by the community-maintained Stardew Valley Wiki’s Mahogany Tree reference. A nightly advance chance is not a promise that the tree will grow on any specific night.

Why the growing time varies

A Mahogany Seedling advances through growth stages. Each night, an unfertilized seedling has a 15% chance of advancing; Tree Fertilizer raises that chance to 60%. Because either outcome is probabilistic, actual maturity can take longer or less time than the typical range.

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How to make a Mahogany Tree grow faster

  1. Plant a Mahogany Seed.
  2. Apply Tree Fertilizer after planting. Fertilizer can be applied to a planted seed or sapling; applying it before planting is not the sequence described by the Stardew Valley Wiki’s tree-growth guidance.
  3. Allow nights to pass. Fertilizer improves the chance of a stage advance each night, but does not guarantee one.

Crafting Tree Fertilizer

The recipe is learned at Foraging Level 7 and requires 5 Fiber and 5 Stone, according to the Stardew Valley Wiki’s Tree Fertilizer reference. That gives you a faster growth option, at the cost of those materials.

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What happens during Winter?

Fertilized seedlings can continue growing during Winter. Unfertilized trees generally stop growing in Winter, with exceptions for trees in the Desert and on Ginger Island. If you want a seedling to keep advancing through the season, fertilize it after planting.

Why a Mahogany Seed may not seem to grow

  • It has not advanced yet. Even with fertilizer, a stage advance is only a 60% chance per night; without it, the chance is 15%.
  • It is Winter and the seedling is unfertilized. Unfertilized trees generally pause during Winter outside the Desert and Ginger Island.
  • You expected fertilizer to guarantee growth. Tree Fertilizer improves the odds but does not ensure a nightly advance.

For additional seed-specific information, see the Stardew Valley Wiki’s Mahogany Seed reference. The published timing figures are gameplay reference values; the cited pages do not identify a specific game version for them.

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