There are 28 total crops to ship to unlock this achievement. I'll tell you where to get them, how much they cost, and how long they take to grow, each divided into their growing season. Some crops, namely the coffee beans, corn, and wheat grow in multiple seasons. In the collections tab, you can easily keep track of how many crops you have shipped by scrolling over any crop and reading the number shipped. Ready? Let's go.
Spring
Cauliflower - Pierre sells for 80g, they take 12 days to grow
Coffee Bean - Dropped by Dust Sprites in the caves and sold by the traveling merchant for 100-1,000g, they take 10 days to grow
Garlic - Pierre sells them in Year Two for 40g, they take 4 days to grow
Green Bean - Pierre sells them for 60g, they take 10 days to grow
Kale - Pierre sells them for 70g, they take 6 days to grow
Parsnip - Pierre sells them for 20g, they take 4 days to grow
Potato - Pierre sells them for 50g, they take 6 days to grow
Rhubarb - Sandy sells them for 100g and the traveling cart sells them for 150-1,000g, they take 13 days to grow
Strawberry - They are sold only at the Egg Festival (Spring 13th) for 100g, they take 8 days to grow
Summer
Blueberry - Pierre sells them for 80g, they take 13 days to grow
Corn - Pierre sells them for 150g, they take 14 days to grow
Hops - Pierre sells them for 60g, they take 11 days to grow
Hot Pepper - Pierre sells them for 40g, they take 5 days to grow
Melon - Pierre sells them for 80g, they take 12 days to grow
Radish - Pierre sells them for 40g, they take 6 days to grow
Red Cabbage - Pierre sells them in Year Two for 100g, they take 9 days to grow
Starfruit - Sandy sells them for 400g and the traveling cart sells them for 600-1,000g, they take 13 days to grow
Tomato - Pierre sells them for 50g, they take 11 days to grow
Wheat - Pierre sells them for 10g, they take 4 days to grow
Fall
Amaranth - Pierre sells them for 70g, they take 7 days to grow
Artichoke - Pierre sells them in Year Two for 30g, they take 8 days to grow
Beets - Sandy sells them for 20g and the traveling cart sells them for 100-1,000g, they take 6 days to grow
Bok Choy - Pierre sells them for 50g, they take 4 days to grow
Cranberries - Pierre sells them for 240g, they take 7 days to grow
Eggplant - Pierre sells them for 20g, they take 5 days to grow
Grape - Pierre sells them for 60g, they take 10 days to grow (foraged grapes don't count)
Pumpkin - Pierre sells them for 100g, they take 13 days to grow
Yams - Pierre sells them for 60g, they take 10 days to grow
After shipping 15 of each crop and sleeping through the night, the achievement should pop. Enjoy!
-AchieveDad