In Grow a Garden, the Travelling Merchant is a type of NPC that offers valuable goods for a limited time.
These merchants appear every four hours and remain available for just 30 minutes.
There are multiple merchant types, including the Sky, Gnome, Honey, and others.
Each of them offers a distinct set of items, from gear (e.g., Sprinklers) to cosmetic items.
This article contains the Mutation Spray Merchant shop in Grow a Garden, what it is, when it spawns, a wiki, and more in Roblox.
Mutation Spray Merchant in Grow a Garden

The Mutation Spray Merchant in Grow a Garden is one of many Traveling Merchants that can appear every 4 hours.
In some cases, a Travelling Merchant may be bugged and won’t show up.
When the Mutation Spray Merchant spawns, it’s only available for 30 minutes before it disappears.
You can find and interact with the merchant next to the Seed Shop.
Summer Seed Merchant shop in Grow a Garden
Further reading
Grow a Garden Summer Seed Merchant Shop