Starsand Island Gmax Crops and Farming Basics
Gmax crops in Starsand Island use Gmax Fertilizer III to V for 15%, 35%, or 70% chance. Plot types, weeds, sprinklers, and first-week farming notes.
Last verified: August 20, 2026 — Game version: Starsand Island 1.0 (launched August 18, 2026). Facts come from official Steam news, the community wiki, and dated player reports.
There are four Gmax crops, one per season. Gmax is a merge proc on a 3×3 of the same plant, not a separate seed pack.
All Gmax Crops
| Season | Gmax crop | Possible drops |
|---|---|---|
| Spring | Pineapple | Pineapple, Fragment, Giant Pineapple, Golden Pineapple |
| Summer | Watermelon | Watermelon, Fragment, Giant Watermelon, Golden Watermelon |
| Autumn | Pumpkin | Pumpkin, Fragment, Giant Pumpkin, Golden Pumpkin |
| Winter | Winter Melon | Winter Melon, Fragment, Giant Winter Melon, Golden Winter Melon |
Plant nine of the same crop in a 3×3. When the last one matures, the game rolls Gmax. Success merges the nine into one giant crop. Harvest it with an axe-class tool, not the scythe.
Fertilizer (does not stack across tiles)
| Item | Gmax chance bonus |
|---|---|
| Gmax Fertilizer III | +15% |
| Gmax Fertilizer IV | +35% |
| Gmax Fertilizer V | +70% |
Putting fertilizer on multiple tiles of the same 3×3 does not add the bonus again. Graminova starts Farmer on Summer 2 at Happiness Seed Shop.
Sources
- Official Steam store page: https://store.steampowered.com/app/2966320/Starsand_Island/
- Official Steam news: https://store.steampowered.com/news/app/2966320
- Starsand Island community wiki: https://starsandisland.wiki.gg/
- Steam Community discussions: https://steamcommunity.com/app/2966320/discussions/
- Farming (community wiki): https://starsandisland.wiki.gg/wiki/Farming
Fan-made guide. This site is not affiliated with Seed Sparkle Lab, Steam, or Valve; all game content and media belong to their respective owners.