Firefly Axolotl Grow a Garden — Value, Weight & Trade Guide
The Firefly Axolotl is an A-Tier pet in Grow a Garden, valued for its rare bioluminescent glow variant. It commands a 30–60% premium over a standard Axolotl. Important: the Super Giant threshold is strictly above 9 kg — a 9 kg base weight egg hatched at age 1 produces exactly 9.00 kg, which is Giant, not Super Giant.
Quick Stats — Firefly Axolotl
Tier
A-Tier
Rarity
Bioluminescent Variant
Source
Rare Egg
Premium vs Std
30–60%
Best Age to Hatch
Age 0 (or ≤ 1 w/ 10+ kg base)
Super Giant Wh
> 9 kg (strictly)
9 kg Base at Age 1
= 9.00 kg exactly → Giant
Trade Priority
High (size dependent)
What Is the Firefly Axolotl in Grow a Garden?
The Firefly Axolotl is an A-Tier pet in Grow a Garden and a bioluminescent variant of the standard Axolotl. Its soft glowing appearance sets it apart visually and drives a consistent trade premium of 30–60% above standard Axolotl value. It shares the universal hatch weight formula with all other pets, including Albino Tarantula, Jandel, and Raiju.
Unlike S-Tier pets, the Firefly Axolotl has no unique mutation mechanic. Value is driven by bioluminescent rarity and size tier. There is one important edge case traders must know: a 9 kg base weight egg hatched at age 1 produces exactly 9.00 kg hatch weight — which is Giant tier, not Super Giant.
The universal formula: Wh = (11 × Wb) ÷ (A + 10). Super Giant requires Wh strictly greater than 9 kg.
Firefly Axolotl Hatch Weight by Age — Table 1
Formula: Wh = (11 × Wb) ÷ (A + 10). Note the ⚠ edge case at age 1 with a 9 kg base weight — this yields exactly 9.00 kg which is Giant, not Super Giant (threshold is strictly > 9 kg).
⚠ Edge Case: 9 kg Base + Age 1
Wh = (11 × 9) ÷ (1 + 10) = 99 ÷ 11 = 9.00 kg exactly. Since Super Giant requires Wh strictly greater than 9 kg, this lands in Giant tier. To guarantee Super Giant with a 9 kg base, hatch at age 0: Wh = (11 × 9) ÷ 10 = 9.90 kg ✓
| Age (days) | 9 kg Base → Wh | 10 kg Base → Wh | 11 kg Base → Wh | Tier (10 kg) |
|---|---|---|---|---|
| 0 | 9.90 kg | 11.00 kg | 12.10 kg | ✦ Super Giant |
| 1 | 9.00 kg ⚠ | 10.00 kg | 11.00 kg | Giant ⚠ |
| 2 | 8.25 kg | 9.17 kg | 10.08 kg | ✦ Super Giant |
| 5 | 6.60 kg | 7.33 kg | 8.07 kg | Giant |
| 10 | 4.95 kg | 5.50 kg | 6.05 kg | Giant |
| 20 | 3.30 kg | 3.67 kg | 4.03 kg | Average |
| 40 | 1.98 kg | 2.20 kg | 2.42 kg | Small |
Calculate exact hatch weight for any base weight and age.
Open Pet Calculator →Firefly Axolotl Value by Size Tier — Table 2
Premium is relative to a standard Axolotl at the same size tier. Albino Tarantula typically sits slightly above Firefly Axolotl at matching tiers due to higher base rarity.
| Size Tier | Hatch Weight | Size Mult. | Premium vs Std Axolotl | vs Std Axolotl | vs Albino Tarantula |
|---|---|---|---|---|---|
| ✦ Super Giant | > 9 kg | 4× | 60%+ | 2.5–4× std | Slightly below |
| Giant | 5–9 kg | 2.5× | 50–55% | 2–3× std | Below |
| Large | 4–5 kg | 1.5× | 40% | 1.5–2× std | Below |
| Average | 2–4 kg | 1× | 30% | ~1.3× std | Below |
| Small | < 2 kg | 0.5× | Minimal | ~1× std | Comparable |
Firefly Axolotl vs Albino Tarantula
Both pets are A-Tier and share the same hatch weight formula. The primary difference is rarity origin: the Albino Tarantula's albino coloration typically commands a slightly higher premium (40–80%) vs the Firefly Axolotl's bioluminescent glow (30–60%).
| Factor | Firefly Axolotl | Albino Tarantula | Edge |
|---|---|---|---|
| Tier | A-Tier | A-Tier | Tied |
| Rarity Type | Bioluminescent glow | Albino coloration | Comparable |
| Premium vs Std | 30–60% | 40–80% | Albino |
| Super Giant Mult. | 4× | 4× | Tied |
| 9 kg Edge Case | Yes — exactly Giant | No special edge | Note for FA |
| Best Hatch Age | Age 0 (or ≤ 1 w/ 10+ kg) | Age 0–2 | Tied |
| Trade Demand | High | High | Comparable |
For traders holding both pets, the size tier matters more than the species. A Super Giant of either type outperforms a non-Super Giant of the other. Check current market values on the Pet Values page.
How to Get Firefly Axolotl in Grow a Garden
The Firefly Axolotl hatches from Rare eggs in Grow a Garden. Like the Albino Tarantula, it is a low-probability variant — most Rare eggs produce the standard Axolotl. Trading is often a more efficient route to acquiring one.
- Source: Rare egg (low drop rate for bioluminescent variant)
- Alternative: Trade for one using sheckles or other A/S-Tier pets
- 9 kg base eggs: Hatch at age 0 only — age 1 gives exactly 9.00 kg (Giant, not Super Giant)
- 10+ kg base eggs: Safe to hatch at age 0 or 1 for Super Giant
- Priority: Age 0 always gives the highest hatch weight
Use the Pet Calculator to verify your exact hatch weight before deciding when to hatch.
Related Pets
Firefly Axolotl FAQ
What is the Firefly Axolotl worth in Grow a Garden?
The Firefly Axolotl is worth 30–60% more than a standard Axolotl. A Super Giant Firefly Axolotl (hatch weight strictly greater than 9 kg) is the most valuable, typically 2.5–4× standard Axolotl base value.
How do I get a Firefly Axolotl?
Firefly Axolotls hatch from Rare eggs in Grow a Garden. The bioluminescent variant is a low-probability outcome. Trading is often a faster acquisition path.
Is a 9.00 kg Firefly Axolotl a Super Giant?
No. The Super Giant threshold is strictly greater than 9 kg. A hatch weight of exactly 9.00 kg falls in Giant tier. This happens when you use a 9 kg base weight egg and hatch at age 1: Wh = (11 × 9) ÷ (1 + 10) = 9.00 kg exactly. To guarantee Super Giant with 9 kg base, hatch at age 0: Wh = 9.90 kg.
How does Firefly Axolotl compare to Albino Tarantula?
Both are A-Tier pets with similar value curves. Albino Tarantula typically commands a slightly higher premium (40–80% vs 30–60%) due to higher base rarity. At Super Giant tier, both are top A-Tier trades. Size matters more than species — a Super Giant of either beats a smaller version of the other.