Crops
Quality crops are possible at any time, although they're more common at higher Farming levels, and when fertilizers are used. Iridium quality crops are only possible when Deluxe Fertilizer is used.
Fruit tree fruit are an exception: The longer a fruit tree has grown, the higher quality fruit it produces.
Forage
Similar to crops, quality forages items are more common at higher Foraging levels. Iridium quality forages are only possible when the player has chosen the Botanist profession.
Fish
The quality of caught fish depends on multiple factors. Landing the bobber farther from land, having higher Fishing levels, performing a perfect catch and using a Quality Bobber are all contributing factors. See Fish Size & Quality for a detailed breakdown on the fish quality mechanism.
Cooking
Gold quality cooked dishes are only possible with Qi Seasoning. Silver and iridium cooked dishes are not available.
In addition to the effects listed above, gold quality cooked dishes also have +1 level to all their buffs (excluding Speed buffs) and 50% more buff duration.
Animal Produce
- See: Animals#Produce
Other
Some items may be aged in Casks into higher quality, provided that the player has upgraded their farmhouse for a third time.
