That is one of the hardest achievements to get! I wrote up a guide for you.
- Corn - during work12 if you don't sign the wheat contract
- Potatoes - start crop
- Wheat - during work12 you need to sign a wheat contract
- Peppers - during work16 if you go to the seed exchange and already have plums
- Tomatoes - start crop
- Plums - during work2 Kevin will offer them to you. Make sure you plant them soon!
- Squash - start crop
- Strawberries - during work4 if you show off your crops Thuc will offer you a strawberry plant
- Beans - start crop
- Peanuts - community11 if you talk to Thuc and don't specify Martin's medicine
- Carrots - start crop
- Turnips - during a plum event you can get this if you make jam. Also during work22 if you already have onions and your strongest relationship is with the colonists.
- Onions - during a plum event you can get this if you make jam or buy onions. Can get during work22 if your strongest relationship is to the colonists.
- Garlic - community11 if you are not a neglectful parent
- Spinach - start crop
- Broccoli - during a plum event you can get this if you make jam. Can get during work22 if your strongest relationship is with the mavericks.
- Goats - start crop
- Bees - during work10 Kevin will offer them to you for 100 credits
I hope this helps!