How is pet weight calculated in Grow a Garden?

Pet weight formula: W = (HatchWeight ÷ 11) × (Age + 10). The growth is linear — each age level adds HatchWeight÷11 kg. At age 100, a pet weighs exactly 10× its hatch weight.

What is the best pet mutation for passive boost in Grow a Garden?

Venom, UFO, HyperHunger, and Alienated all give +30% passive boost and are the highest tier. Nightmare gives +22% with +125% size. Rainbow gives +20% at 3.22% drop rate.

What does Grandmaster Sprinkler do to pet weight?

The Grandmaster Sprinkler adds a flat +4 kg to the pet's effective weight for ability calculations. It does not reduce cooldowns. The sprinkler costs 1 billion Sheckles or 279 Robux.

What pets give passive crop value boost?

Lion (+7%), Forger (+7%), Crocodile (+6%), Rhino (+4.5%), Giraffe (+3%), Oxpecker (+1%) from the Safari set. Pet mutations like Venom/UFO (+30%), Rainbow (+20%), Golden (+10%) also boost passive value.

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Q: What is the Ascended pet mutation?

Ascended is the rarest pet mutation at 0.32% drop rate. A pet with Ascended mutation applies the Dawnbound crop mutation (149×) to nearby fruits at 75–90% chance per activation. An Ascended pet is worth enormous trade value.

Calculate pet weight by age using the official formula W = (HatchWeight ÷ 11) × (Age + 10). Select pet mutations, apply Grandmaster Sprinkler bonus, and see full weight milestone tables. Browse 50+ pets including Common, Rare, Legendary, Mythical, Divine and Prismatic. Updated 2026.

Last updated: May 1, 2026

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Click any pet from the grid to see weight calculations, ability details, and mutation effects.

Frequently Asked Questions — Grow a Garden Pets

How is pet weight calculated?+

W = (HatchWeight ÷ 11) × (Age + 10). Growth is linear — every level adds HatchWeight÷11 kg. At age 100 a pet weighs 10× its hatch weight. At age 125 it weighs 12.27× hatch weight.

What pet mutation gives the highest passive boost?+

Venom, UFO, HyperHunger, and Alienated all tie at +30% passive boost. Nightmare gives +22% (plus 125% size increase). Rainbow gives +20% and is the most commonly traded high-boost mutation at 3.22% drop rate.

What does Grandmaster Sprinkler do to pets?+

Adds flat +4 kg to effective weight for ability calculations. Does not reduce ability cooldowns. Costs 1 billion Sheckles or 279 Robux in the shop — or can be dropped by Mole, Pancake Mole, or Imp pets.

What is the Ascended pet mutation?+

Ascended (0.32% drop rate) causes the pet to apply Dawnbound crop mutation (149×) at 75–90% chance per activation. The rarest and most valuable pet mutation. An Ascended pet is worth massive amounts in trades.

What is the max age for pets?+

Pets can reach age 125 maximum. At age 125, weight = (HatchWeight ÷ 11) × (125 + 10) = HatchWeight × 12.27. Most trade values reference age 100 (10× hatch weight) as the standard max comparison point.