Grow A GardenWeight Calculator
Instantly calculate crop values, trade WFL, and 24+ garden materials. Get total weight, bags needed, and accurate Sheckle values.
Select Crop or Pet
Configure Item
📅 Last Updated: May 29, 2026 · growagardenweightcalculator.com
Prehistoric Event Grow a Garden 2026 - Complete Guide
Prehistoric Event launched July 5, 2025 (Update 1.13.0). DNA Machine converts pets → Dino Eggs → 11 dino pets. T-Rex and Spinosaurus at 0.5% hatch rate. Amber 3-stage mutation (10x → 40x max). Bone Blossom 875K base Sheckles from 21 Dino Quests. Sandstorm + Sandy 3x permanently added. In 2026: all Prehistoric exclusives are trade-only with rising prices.
Prehistoric Event — Stats Overview
📋 What's in This Guide
- What Is the Prehistoric Event?
- How to Use the Calculator
- DNA Machine — Core Mechanic
- All 11 Dinosaur Pets
- Amber Mutation — 3 Stages
- All Prehistoric Mutations Table
- Bone Blossom — 875K Seed
- Blaire Dino Quests
- Ancient Seed Pack
- Sandstorm Weather
- Traveling Merchants
- Pet Mutation System
- Tier Rankings
- Decision Guide
- Common Mistakes
- FAQs
What Is the Prehistoric Event?
The Prehistoric Event launched July 5, 2025 (Update 1.13.0) and introduced the most content in a single Grow a Garden update at the time. Core additions: DNA Machine mechanic, 11 exclusive dinosaur pets (T-Rex and Spinosaurus each at 0.5%), Amber 3-stage mutation, Bone Blossom seed (875K base — highest at launch), Sandstorm weather event with Sandy mutation (3x), Blaire NPC with the Dino Quest system, Ancient Seed Pack, and Graham NPC.
Update 1.14.0 (July 12, 2025) added Part 2: Pet Mutation System, Bonus Quests with no cooldown, Primal Eggs, and Pet Toys. In 2026, the active event window is closed. Sandstorm weather and Pet Mutation System were permanently integrated. All Prehistoric-exclusive pets and seeds — T-Rex, Spinosaurus, Bone Blossom — are trade-only with post-event premium pricing.
How to Use the Calculator
Base 875K × Weight² × Mutations. Bone Blossom 5kg + Ancient Amber (40x) = 875K × 25 × 40 = 875M Sheckles. Add Celestial (120x) on top = 875M × 120 = 105B.
Check current T-Rex token/Sheckle value in pet calculator — trade-only 2026 means value rising. Last known: 800B–1.2T Sheckles.
Ancient Amber (40x) stacks multiplicatively. Crop + weight + Ancient Amber + second mutation — multiply all together. Never add.
Upgraded DNA Machine: 60 cycles/day. At 0.5% T-Rex rate = statistical avg 1 T-Rex per ~3.3 days of continuous use.
DNA Machine — Core Mechanic
Located on the event island next to Graham's Dinosaur Eggs stall. Insert any pet → wait 1 hour → receive 1–6 Dinosaur Eggs. Small direct chance to get a live dinosaur immediately without the egg step. Eggs hatch after 4 hours. The DNA Machine is the only way to get Prehistoric dino pets — no other source exists.
DNA Machine Upgrades — Barry NPC
Barry accepts prehistoric plant weight (Bone Blossom or Ancient Seed Pack crops in total kg) to unlock 5 upgrades. Upgrade 1: removes 12 minutes from incubation. Upgrade 2: removes 24 more minutes. After both: 24-minute wait instead of 60. Priority 1 after getting any Bone Blossom harvest — tripling daily egg output means tripling T-Rex attempts.
Insert pet → 24min → receive 1–6 Dino Eggs → 4hr hatch → open
60 attempts per day at 0.5% T-Rex = statistical avg 1 T-Rex every ~3.3 days
Feed old/unwanted pets continuously — never stop the cycle
All 11 Dinosaur Pets — Abilities and Rarity
Eats a random crop and roars — applying that crop's mutation to all nearby crops. Passively spreads any mutation across your entire plot without needing weather events. T-Rex with a Celestial crop nearby spreads 120x to everything. Creates mutation farms generating billions passively. Trade value 2026: 800B–1.2T Sheckles.
Every 20 minutes absorbs one random mutation from 5 crops, then transfers all collected mutations to one random crop — concentrating multiple mutations into a single plant. More powerful than T-Rex for creating ultra-high stacked mutation crops. Pairs perfectly with Bone Blossom or Dragon Fruit.
+14% player movement speed. 2.5% chance to apply Amber mutation on harvest. Passive Amber farming without Spray — best movement pet in Prehistoric set.
8% chance to duplicate any harvested crop. Duplicate of Bone Blossom = free 875K Sheckles. Multiple Stegosaurus stack the 8% chance. Best used with highest-value, heaviest crops.
Rams plants to advance growth stage. Also increases size and weight of hatched pets. Active ability — manually triggers crop maturation for impatient farmers.
Chance to increase pet size and weight when hatched nearby. Heavier pets have shorter cooldowns and stronger abilities. Long-term investment improving the entire pet lineup over time.
Applies Windstruck mutation to plants. Increases player jump height. Better for collection and aesthetic value than hardcore farming — jump height useful for event island navigation.
Sprays venom to advance nearby pets' cooldowns. Cooldown reset support. Paired with T-Rex or Spinosaurus — reduces wait between ability activations for maximum output.
Returns any crop another player attempts to steal back to you. Anti-theft passive. Essential for AFK farming in public lobbies where Raccoon pet theft is common.
Reduces open time on the cosmetic crate with highest timer. Quality of life for players grinding Dino Crate cosmetics. Shortens wait on your highest-value queued crate.
All active dino pets gain additional XP when Iguanodon is nearby. Best used when you have 3+ dino pets active. Accelerates every other dino pet's aging toward age-50 Pet Mutation eligibility.
Amber Mutation — First Multi-Stage in the Game
Amber was the first ever multi-stage mutation in Grow a Garden — it evolves over time as the crop ages unharvested, unlike all other static mutations. Patience = profit: the longer you leave an Amber crop unharvested, the higher the stage and multiplier.
| Stage | Multiplier | Visual | Requirement |
|---|---|---|---|
| Amber | 10x | Orange amber glow | Fresh application |
| Old Amber | 40x | Deep amber stone encasing | Left unharvested — ages over time |
| Ancient Amber | 40x | Full fossilization | Maximum age = maximum value |
Dragon Fruit 10kg × Ancient Amber (40x) = 850K × 100 × 40 = 3.4 Billion
Bone Blossom 5kg × Ancient Amber (40x) = 875K × 25 × 40 = 875 Million
Dragon Fruit 10kg × Ancient Amber (40x) × Celestial (120x) = 408 Billion
How to Get Amber Mutation
Three methods: Amber Mutation Spray (apply directly to any crop — most reliable), Velociraptor pet (2.5% chance on harvest), or Raptor pet (2.5% chance). Always apply Spray to your heaviest highest-base-value crop and leave it to age fully. Never harvest at Stage 1 Amber (10x) when Stage 3 Ancient Amber (40x) is 4x more valuable.
All Prehistoric Mutations Table
| Mutation | Multiplier | How to Get | Visual |
|---|---|---|---|
| Ancient Amber | 40x | Amber aged to Stage 3 | Full fossilization |
| Old Amber | 40x | Amber aged to Stage 2 | Deep amber stone |
| Amber | 10x | Spray / Raptor / Velociraptor | Orange amber glow |
| Sandy | 3x | Sandstorm weather event | Sandy yellow color |
| Windstruck | Variable | Pterodactyl pet | Wind effects |
| Tempestuous | Variable | Weather event | Storm visual |
Bone Blossom — 875K Seed
Bone Blossom was the highest-value seed at launch of the Prehistoric Event — 875,000 Sheckles base harvest value, beating Candy Blossom (~90K) by nearly 10x. Multi-harvest: plant once, collect repeatedly without replanting. The 875K base means even at 1kg with no mutations it outearns most Legendary seeds in the game.
How to get Bone Blossom: Complete 21 Dino Quests from Blaire NPC — Bone Blossom is the final weekly reward. Also appears rarely in individual quest rewards and Ancient Seed Pack pulls. In 2026 with the event closed, Bone Blossom is trade-only at premium post-event pricing.
Blaire Dino Quests — Full System
Blaire NPC hosts the Pre-Historic Quest Stand. Every 12 hours: 3 different quests from a pool of 15 tasks. Standard tasks: harvest specific crops, plant specific seeds, craft gear, age pets. Each completed quest fills the weekly Dino Quest Progress bar and awards Ticks.
| Milestone | Reward |
|---|---|
| Early milestones | Pet Eggs, Seed Packs, cosmetics |
| Mid milestones | Ancient Seed Pack, Dino Crates |
| 21 quests complete | Bone Blossom seed — weekly prize |
| Reset (100M Sheckles) | Restart bar for another Bone Blossom cycle |
Bonus Quests (Update 1.14.0): No cooldown unlike standard 12-hour quests. Complete the full 21-quest Bone Blossom track faster using only Bonus Quests with required items stocked. Stock Bone Blossom seeds, Ancient Seed Pack crops, Dino Eggs, and Sheckles before rapid completion.
Ancient Seed Pack — All 6 Seeds
| Seed | Type | Base Value | Pack Rarity |
|---|---|---|---|
| Bone Blossom | Multi-harvest | 875,000 | Very Rare |
| Fossilight | Standard | High | Rare |
| Horned Dinoshroom | Multi-harvest mushroom (first in game) | High | Rare |
| Burning Bud | Standard | High | Rare |
| Amber Spine | Craftable | Medium-High | Uncommon |
| Horsetail | Craftable | Medium | Common |
Obtain Ancient Seed Pack by completing Dino Quests OR crafting at quest platform (1 Dinosaur Egg + 55,000,000 Sheckles). Horned Dinoshroom is historically notable — first multi-harvest mushroom ever in Grow a Garden.
Sandstorm Weather Event
Sandstorm is a permanent weather event introduced with the Prehistoric Update — permanently in game rotation, not just during event windows. Sky shifts to dusty tan-brown, sand particles swirl, crops have a chance to receive Sandy mutation (3x multiplier). Sandy turns crops a sandy yellow color.
Traveling Merchants During Prehistoric Event
Two traveling merchants spawned randomly every 4 hours during the active Prehistoric Event window:
Summer Merchant: Sold all Summer Event crops for Sheckles — second chance for players who missed the Summer Update. Inventory changes each visit.
Honey Merchant: Sold exclusive crops for Honey currency (not Sheckles). Honey saved from Bizzy Bees event converts to prehistoric-era crops. Stock Honey before trading.
Pet Mutation System — Update 1.14.0
Pet Mutation Machine was the major Part 2 addition. Pets must be age 50+ to enter. Each mutation upgrades pet traits and may add passive abilities. Permanent system — all pets in the game can be mutated, regardless of current events.
Pet Toys (Medium Toy, Medium Treat, Level-Up Lollipop) from Gear Shop and Crafting Table give XP boosts to accelerate aging. Iguanodon passively boosts XP for all nearby dino pets — fastest route to age 50 for dinosaur pets specifically.
1. Age highest-utility pet to 50 (T-Rex first if you have one)
2. Collect Pet Toys from Gear Shop to accelerate aging
3. Keep Iguanodon active alongside target pets for XP boost
4. Enter Pet Mutation Machine → upgrade traits
5. Repeat in order of utility value
Tier Rankings — Prehistoric Event Rewards
T-Rex (mutation spreader 800B–1.2T), Spinosaurus (mutation concentrator), Bone Blossom (875K base), Ancient Amber (40x). Chase these above everything else.
Velociraptor (speed + Amber 2.5%), Stegosaurus (8% crop duplication), Dilophosaurus (cooldown support), Ancient Seed Pack.
Triceratops (growth advance), Brontosaurus (pet weight boost), Ankylosaurus (anti-theft AFK protection), Sandy 3x from Sandstorm.
Pterodactyl (Windstruck + jump), Parasaurolophus (crate timer), Iguanodon (dino XP support). Strong in specific dino-heavy setups.
Decision Guide
Common Mistakes
1. Harvesting Amber crops before Ancient Amber stage: Amber (10x) is worth 4x less than Ancient Amber (40x). Every early harvest loses 75% of potential value. Leave Amber crops alone — the only valid reason to harvest early is an emergency Sheckle need. Otherwise patience equals profit.
2. Using Amber Spray on lightweight or low-base-value crops: Spray is rare — wasting it on a 1kg Strawberry when a 10kg Dragon Fruit is growing is a massive efficiency loss. Always apply to your heaviest, highest-base-value crop in the garden. Dragon Fruit and Bone Blossom are the only correct targets for Amber Spray.
3. Skipping Barry DNA Machine upgrades: Two time upgrades cut incubation from 60min to 24min — tripling daily egg output. Submit Bone Blossom kg to Barry immediately after any harvest. Faster DNA Machine = more T-Rex attempts = statistically closer to the 0.5% roll. This is the single highest-impact action in the entire event.
Never Do
- Harvest Amber before Ancient Amber stage
- Use Amber Spray on low-weight crops
- Skip Barry DNA Machine upgrades
- Sell Bone Blossom seeds during event (hold)
Always Do
- Upgrade DNA Machine to 24min ASAP
- Apply Amber Spray to heaviest high-base crop
- Feed old pets to DNA Machine continuously
- Complete all 21 Dino Quests for weekly Bone Blossom
🔑 Key Takeaways
- Prehistoric Event: July 5, 2025 — biggest GAG content drop at launch
- T-Rex and Spinosaurus: 0.5% hatch from DNA Machine eggs
- Amber: first 3-stage mutation — Ancient Amber Stage 3 = 40x
- Bone Blossom: 875K Sheckles base multi-harvest from 21 Dino Quests weekly
- DNA Machine upgraded: 24min cycle = ~60 eggs/day = higher T-Rex volume
- 2026 status: all Prehistoric exclusives trade-only — rising prices post-event
📋 Changelog
- May 29, 2026: Updated. Prehistoric Event trade-only. T-Rex 800B–1.2T Sheckles. Bone Blossom premium post-event. Sandstorm + Pet Mutation System remain permanently active.
- Update 1.14.0 (July 12, 2025): Pet Mutation System. Bonus Quests (no cooldown). Primal Eggs. Pet Toys. 5 new craftable seeds.
- Update 1.13.0 (July 5, 2025): Prehistoric Event launch. DNA Machine, 11 dino pets, Amber 3-stage, Bone Blossom, Ancient Seed Pack, Sandstorm, Blaire and Graham NPCs.
Frequently Asked Questions
Related Tools & More GAG Guides
Verified using community data and in-game testing. Fan-made — not affiliated with Roblox Corporation or Grow a Garden developers.