It will be grown, produced, cultivated, farmed, manufactured.
Or genetically engineered or modified in Japan during one of the processes above.
It depends on what you are trying to explain. the planting and growing, or the farming and harvesting, the harvesting and transporting [logistics] of getting the strawberries into shops, markets and supermarkets.
The cultivation on open fields modern methods or traditional methods, with or without chemicals, or in greenhouses, biospheres etc. Whether the strawberries are altered by genetics or selective breeding or cross breeding, grown wild or any other means.
Made is not the correct word that is for making machinery or cooking food cakes etc.
This distinguishes natives from non natives in this situation. A native is unlikely to say "strawberries are made in X" unless robot machines produce [make] them from nothing to start with. OUT OF THIN AIR