Whats so special about Gilberties microgreens, herbs and lettuces is that they are all soil-grown. The Gilberties have developed a custom soil blend that originally took 4 years to perfect. They grow more than just microgreens in this magic dirt. Their arugula is out of this world - emerald green with a supple texture and the spicy bite of truly wild arugula. This certified organic soil ensures that each micro, herb and leaf contains the highest amount of essential oil and taste. Relying on Integrated Pest Management techniques, they release beneficial insects to deal with the bad bugs.