Farming is an activity in Stardew Valley done on the player's farm. Players take Seeds, plant them in the ground, and they will grow into crops. They must then be harvested and sold in order to make Gold(). The player's ability to farm is measured as a skill.
There are 40+ crops and fruit trees. 
There are many types of crops to grow. For each crop, there are also three different quality ratings, denoted by a star (or lack of one) on the icon of the crop in your inventory.
|Star Type||Sell Value (% of original)||Energy/Health Value (% of original)|
Here are a selection of ones that have been identified. (Click green link to see complete info on crop. Energy and Health return are in the complete info.)
|Daily Profit1||Seasonal Profit1||Profit Ratio||Growth (Days)||Repeat (Days)|
|Template:Name||General Store 30g|
|Template:Name||General Store 80g|
|Template:Name||General Store 40g||Template:Qualityprice||5||120||150%
|Template:Name||General Store 60g|
|Template:Name||General Store 70g|
|Template:Name||General Store 20g|
|Template:Name||General Store 50g|
|Template:Name||Egg Festival 100g||Template:Qualityprice||N/A||
|Template:Name||General Store 20g|
- Profit calculated for a crop planted on the first day and replanted immediately. Daily profit is for making quick money, which isn't related to repeating crops. Also, seasonal values SHOULD NOT include days of the season where the crop cannot be planted to harvest. (ex: Yams grow ever 10 days, a 3rd harvest will not yield any results, so 8 days of the season go to waste) This means seasonal profit WILL NOT always be daily profit x 28. (Please don't edit the page to show that, as I've noticed someone has)
- Sunflowers do not repeat, but they drop their own seeds, making every recurring crop free. Profits in the table do not consider the initial investment in seeds, since you get more seeds than you planted rendering the initial investment insignificant in the long run.
You'll make money with anything, so feel free to have fun with it. But if you want to min/max then this seems best:
- When starting out po-ta-tos will offer maximum ROI as they produce multiple per plant.
- Strawberries are by far the best from year 2 onward. If planted on 1st day of Spring, the profit-to-cost ratio reaches +500%. (seasonal profit of 140 if planted on day 13, and 500 if planted on 1st day)
- Over the entire season, the Green Bean offers the 2nd greatest profit-to-cost ratio (+300%).
- For easy mid season money, go with Rhubarb or Cauliflower.
- You can go with Blueberries all the way.
- Together with the Keg, Hops can give 300g per day, but requires a lot of work and an enough Kegs to process all the Hops. Try to keep a stock of hops for your Kegs to work all year round.
- Corn may seem appealing since it lasts into fall, but at only 200g/season, it's much much better to just plant blueberries and then use the first day of fall planting cranberries to replace them. (50g/season if planted only one season, 200g/season if planted on summer to fall)
- Rare Seeds are by far the best, making 2000g per plot.
- Cranberries are amazing since they require very little work for a big payoff. If your field is too large to fill with your available funds, then filling it in with grapes is best.
- For easy mid season money, go with Artichoke from year 2 onward, otherwise Pumpkins work just as well but take longer. If you're tight on money, go with 2 harvests of Beets, then the Pumpkins.
Note: If you're only looking to make money and nothing else and have unlimited farmland and energy, then replanted crops will see the most profit, since you can grow your field with each harvest.
If you spend 2000g to plant 100 Parsnips, harvest them for 3500g and replant 175 (with the money from the first ones), then repeat this (planting 306, 535, 936 and finally 1638 Parsnips)... then you will end the season with ~2800% of your initial investment (1638 * 35g = 57330g). You put 2000g aside and have each harvest pay for the next.
However, this isn't feasible since farmland and energy is limited, but is worth considering for smaller numbers, especially with some of the other crops. A single Wheat will go from 1 to 2 to 5 to 13 to 32 and a final crop of 80, your 10g investment with NO additional supply of money will become 2005g. A single Pumpkin will cost you 100g, sell for 320g and let you plant 3 more, which turns your 100g into 980g.
- Rancher - Animal products worth 20% more.
- Coopmaster - Befriend Coop animals quicker. Incubation time cut in half.
- Sheperd - Befriend barn animals quicker. Sheep produce wool faster.
- Tiller - Crops worth 10% more.
- Agriculturist - Crops grow 10% faster.
- Artisan - Artisan goods worth 50% more.
Fertilizers can increase the quality of your crops, make them grow faster, or retain moisture so you don’t have to water the soil as often.