GAG Calc

Grow a Garden — Game Stats & Limits

Every numerical limit, formula and probability in one reference. Verified to ±2% accuracy from in-game testing.

Game-wide constants

Max pet age
125
Max XP needed
346,240
Max weight ratio
10× hatch
Mutation Machine min age
50
Mutation Machine duration
60 min
Trade Token divisor
50,000
Hatch boost cap
90%
Pet hunger to grow
≥ 1%

Pet XP curve — floor(20 × n^2.02)

AgeCumulative XPXP since previous milestoneTime at 10 XP/sec (no helpers)
Age 10——
Age 5516+51652s
Age 102,094+1,5782m 38s
Age 208,493+6,39910m 40s
Age 3526,305+17,81229m 41s
Age 5054,069+27,76446m 16s
Age 75122,646+68,5771h 54m
Age 100219,295+96,6492h 41m
Age 125 (max)344,182+124,8873h 28m

Base XP rate per second = 5 + (Weight / 2). Add helpers (Capybara: 3 + 0.3W) up to 8 to dramatically reduce time.

Weight progression — W = (W_hatch / 11) × (age + 10)

Hatch weightAge 1Age 5Age 10Age 20Age 35Age 50Age 75Age 100Age 125
0.5 kg0.5 kg0.7 kg0.9 kg1.4 kg2.0 kg2.7 kg3.9 kg5.0 kg6.1 kg
1 kg1.0 kg1.4 kg1.8 kg2.7 kg4.1 kg5.5 kg7.7 kg10.0 kg12.3 kg
2 kg2.0 kg2.7 kg3.6 kg5.5 kg8.2 kg10.9 kg15.5 kg20.0 kg24.5 kg
3.5 kg3.5 kg4.8 kg6.4 kg9.5 kg14.3 kg19.1 kg27.0 kg35.0 kg43.0 kg
5 kg5.0 kg6.8 kg9.1 kg13.6 kg20.5 kg27.3 kg38.6 kg50.0 kg61.4 kg
7 kg7.0 kg9.5 kg12.7 kg19.1 kg28.6 kg38.2 kg54.1 kg70.0 kg85.9 kg
10 kg10.0 kg13.6 kg18.2 kg27.3 kg40.9 kg54.5 kg77.3 kg100.0 kg122.7 kg

Mutation Machine — exact probabilities

MutationProbabilityTrade multiplierEffect
Shiny32.15%1.15×+15% XP gain
Inverted16.08%1.3×+30% XP gain
Windy9.65%1.1×Movement boost
Frozen9.65%1.1×Frost effect
Golden6.43%1.5×+10% boost
Tiny6.43%1.4×-20% hunger, +5–30 XP/s fixed
Mega6.43%1.4×+20% hunger, +10–40 XP/s fixed
IronSkin3.22%1.25×Iron defense aura
Radiant3.22%1.6×Light aura buff
Shocked3.22%1.6×Lightning aura
Rainbow3.22%2.5×+20% all stats — top tier
Ascended0.32%5×+50% — best pet mutation

Sum = 100%. Pet must be age ≥ 50. Process takes 1 hour. Age resets to 1 after mutation. Existing mutation overwritten (except natural Rainbow Egg pets which can stack).

Top crop mutations by multiplier

MutationMultiplierTypeHow to get
Dawnbound150×environmentalDawn event window.
Voidtouched135×environmentalVoid event.
Disco125×environmentalDisco Bee divine pet.
Meteoric125×environmentalMeteor strike event.
Celestial120×environmentalMeteor shower weather.
Galactic120×environmentalGalactic event.
Shocked100×environmentalThunderstorm weather event.
Sundried85×environmentalHeatwave weather.
Radioactive80×environmentalRadioactive event.
Rainbow50×exclusiveVery rare; Butterfly converts heavy mutations into Rainbow.
Molten25×environmentalVolcano event.
Gold20×exclusiveRare drop, Dragonfly turns crops gold every 5 minutes.
Frozen10×environmentalStack Wet + Chilled long enough.
Cooked10×environmentalFire weather.
Silver5×exclusiveRandom small chance on harvest.

Egg hatch boost cap

Hatch time = base × (1 − total boost%). Boost is capped at 90%, so the minimum hatch time is 10% of the base.

Base hatch time+0% boost+25% boost+50% boost+75% boost+90% boost
10m 0s10m 0s7m 30s5m 0s2m 30s60s
30m 0s30m 0s22m 30s15m 0s7m 30s2m 60s
2h 0m2h 0m1h 30m1h 0m30m 0s11m 60s
4h 0m4h 0m3h 0m2h 0m1h 0m23m 60s
8h 0m8h 0m6h 0m4h 0m2h 0m47m 60s

FAQ

What is the max pet age in Grow a Garden?

Max age is 125. Reaching it requires 346,240 cumulative XP (formula floor(20 × n^2.02)).

How heavy can my pet get?

A pet at age 100 reaches exactly 10× its hatch weight. After age 100, weight continues climbing slightly until age 125.

What is the highest crop mutation multiplier?

Dawnbound at 150× is currently the strongest crop mutation. The strongest exclusive (color) mutation is Rainbow at 50×.

What is the rarest pet mutation?

Ascended at 0.32% — equivalent to ~1 in 313 attempts in the Mutation Machine.

What is the egg hatch boost cap?

90%. After stacking helpers + items, hatch time minimum is 10% of base.