The hottest part of summer may require us to use more treated water than we may prefer. Chemicals from city water-treatment plants can build up and can also stunt microbial life in the soil. To help alleviate the chemical load, consider using a chlorine filter that screws into your garden hose. Filters are available at pool-supply stores or online. If you don't have an untreated pond or rain barrels, this is the next best thing.
Frequent watering leaches nutrients from the soil. The best and easiest way to replenish the soil short term is by using a top dressing of worm castings. Just apply a thin layer at your plants' roots. Find worm castings at your favorite local garden store.
Stressed plants may exhibit powdery mildew or blights, especially on tomatoes. You can remedy this organically by using Bacillus subtilis, a soil-dwelling bacterium that controls leaf blight, black mold, powdery mildew and many other diseases. It's sold under various brand names, including Serenade Garden Disease Control, and is OMRI approved for organic growing. Ask your local garden store to carry this for you, or go online to Arbico Organics (arbico-organics.com).
In the end, nothing beats rainwater, but these tips can help your garden thrive in hot weather.
Jim PathFinder Ewing is the author of five books on energy medicine and eco-spirituality (Findhorn Press). His next book, "Conscious Food: Sustainable Growing, Spiritual Eating" will be published in the fall. Find him on Facebook, follow him on Twitter edibleprayers or visit blueskywaters.com.
Ewing was recently elected to the board of directors of Certified Naturally Grown, a national non-profit organization offering certification tailored to small-scale, direct-market farmers and beekeepers who use natural methods. Many growers who use organic methods prefer not to enlist in the U.S. government's certified program; CNG was founded in 2002, at the same time the USDA's National Organic Program went into effect to fill that gap, providing local, community-based third-party certification. It is not affiliated with NOP. For more information, visit naturallygrown.org.