28 days, four times
Spring, summer, fall, and winter each last 28 days. The game starts on Spring 1. The next Spring 1 starts a new year. There is no last year. The desert, Ginger Island, and indoor or underground maps do not follow the valley's season art.
Pierre's seeds, and JojaMart's while it is open, change with the season. Most crops, forage, and fish belong to one season. The festival list has two to four events in each season. Villager routes change with the season as well.
At the end of day 28, crops wither unless they can also grow in the coming season. Fertilizer on a bare tile expires. Fertilizer under a crop that continues into the next season stays.
Ancient Fruit, Coffee Bean, Corn, Sunflower, and Wheat are the multi-season crops. A multi-season crop that is still in season keeps growing.
On the 1st, out-of-season crops leave a dead plant on tilled soil. A scythe clears it. The soil under that dead plant stays tilled.
The farm overnight
The season change also untiles empty soil and drops debris. Soil that still holds a living plant is spared that mess. Winter into spring is the heavier debris day. Giant crops do not die at the season change. They also cannot grow in the greenhouse, in a garden pot, or on Ginger Island.
From 1.6, grass outdoors no longer vanishes on Winter 1. It goes dormant until spring, and cutting it is less effective: the hay chance is reduced by 67%. Marnie sells hay for 50g. Weather covers rain and snow. Meadowlands is the 1.6 map that starts on blue grass.
Crops need water every day to grow. A missed day pauses growth. It does not kill the plant. Grow times count nights after the planting day, so a 5-day crop planted on the 1st is ready on the 6th if it was watered that first day.
Cauliflower, melon, pumpkin, powdermelon, and Qi Fruit can form a giant crop. Each morning every 3x3, including overlapping ones, has a 1% chance when the top-left plant is fully grown and watered and all nine match. An axe harvests 15 to 21 normal-quality crops.
Stardew Valley · What is · Characters · Abigail · Haley · Sebastian · Leah · Penny · Items · Gifts · FAQ · Sources · Crops · Spring · Summer · Fall · Winter · Ancient Fruit · Starfruit · Sweet Gem Berry · Hops · Cranberries · Blueberries · Coffee Bean · Strawberry · Cauliflower · Melon · Pumpkin · Crop profit · Greenhouse · Ginger Island · Fertilizer · Giant crops · Farming · Farming · Sprinklers · Scarecrows · Junimo Huts · Farm maps · Buildings · Barn · Coop · Shed · Greenhouse · Mill · Silo · Slime Hutch · Farm layout · Fishing · Spring · Summer · Fall · Winter · Legend · Crimsonfish · Angler · Glacierfish · Mutant Carp · Ms. Angler · Radioactive Carp · Glacierfish Jr. · Legend II · Legendary fish · Crab pots · Fish ponds · Bait and tackle · Fishing rods · Fishing basics · Rare finds · Prismatic Shard guide · Dinosaur Egg · Ancient Seed guide · Rabbit's Foot · Golden Pumpkin · Pearl · Tea Set · Foraging · Ginger Island · Minerals · Gems · Geodes · Rare drops · Mines · Floors · Elevator · Monsters · Skull Cavern · Strategy · Mining · Ores · Nodes · Quarry · Volcano · Mining start · Cavern day · Elevator stops · Museum · Artifacts · Minerals · Rewards · Collections · Donations · Perfection · Completion · Stardrops · Achievements · Community Center · Bundles · Crafts Room · Pantry · Fish Tank · Boiler Room · Bulletin Board · Vault · Missing Bundle · Remixed · Joja · Center guide · Center order · Checklist · Joja or bundles · Junimo Kart · Animals · Coop · Barn · Chicken · Duck · Rabbit · Dinosaur · Cow · Goat · Sheep · Pig · Artisan · Keg · Preserves jar · Cheese press · Mayonnaise machine · Oil maker · Loom · Cask · Artisan profit · Alex · Elliott · Emily · Harvey · Maru · Sam · Shane · Caroline · Clint · Demetrius · Dwarf · Evelyn · George · Gus · Jas · Jodi · Kent · Krobus · Leo · Lewis · Linus · Marnie · Pam · Pierre · Robin · Sandy · Vincent · Willy · Wizard · Universal gifts · Birthdays · Heart events · Marriage · Children · Festivals · Egg Festival · Flower Dance · Luau · Moonlight Jellies · Fair · Spirit's Eve · Festival of Ice · Night Market · Winter Star · Desert Festival · Trout Derby · SquidFest · Weather · Update 1.6 · Mastery · Start here · First year · Meadowlands
Official site: stardewvalley.net.