
16. Improved immune system
While you’re outdoors basking in the sun, you’ll also soak up plenty of vitamin D, which helps the body absorb calcium. In turn, calcium helps keep your bones strong and your immune system healthy. As mentioned, handling the dirt helps boost the immune system. It’s essential for young children to develop a healthy “microbiome,” or personal microbe ecosystem. Although there are some bacteria, fungi, and viruses that make us sick, many more are essential to our health. “The immune system is there to act like a gardener or a national park warden,” says Jack Gilbert, a microbiologist at the University of Chicago and co-author of the new book “Dirt Is Good.” “It’s there to promote the abundance and growth of good bacteria and act as a barrier to the generation of bad bacteria.”
If you want to enjoy a continuous supply of garden-fresh herbs in your own kitchen, keep these tips in mind.
Choose plants carefully, provide plenty of light, ensure air-circulation and cool conditions, watch watering, rotate often, fertilize monthly, prune regularly. Herbs to consider for your kitchen: Parsley, mint, dill, basil, sage, rosemary, thyme, cilantro, and coriander. Perennial herbs like sage, thyme, lavender, chives, and mint do not need to be replanted each year. But annuals like basil and cilantro will not survive an Iowa winter. So they must be replanted each spring. Annual herbs can be cut back more severely since they do not overwinter and they will regrow quickly.