God planted the first garden, let Adam tend it. Upon his sin the ground fell under the same curse man and all of creation did, produce from the ground requiring much labor with sweat of the brow. It's still a constant struggle to raise crops where weeds, insects, diseases, drought and floods oppose that effort. Men sweat a little less now due to greater technology, but that has brought about GMOs designed to resist those problems, resulting in food we might not find healthy. Non-GMO foods are becoming more popular as the science world begins to cast doubt on the new technology.
The healthiest way is to deal with the curse of those problems, plant heritage seed, break out the hoe, and plant lots of marigolds and other species that repel bugs, and turn a handful of ladybugs loose once a month. You can buy them by the pound. But because of the curse, you will still sweat, and be sore and hot, sunburned often.