Waxing and waning are terms that mean “growing” and “shrinking” respectively. Neither is limited to an astronomical context (“As he waxed eloquent on his own magnificence, her interest in him waned.”), but they often refer to the monthly changes in the apparent size of the Moon as it moves from new to full (waxing) and back again (waning).
Planning activities to coincide with the waxing or waning Moon is an easy form of magical timing. Many everyday calendars show the phases of the Moon, so you don’t need buy a special book or bookmark an obscure website. The idea is, start activities related to growth and increase during the two weeks of the waxing Moon. If on the other hand you’re trying to reduce or diminish something, then time it for the two weeks that the Moon is waning.
Lunar gardening makes extensive use of the waxing and waning Moon, although it gets a little more complicated than just growing and reducing. For one thing, stuff that goes on above the ground is related to the waxing Moon, while that which happens in the ground is related to the waning Moon. You can refine the system even more by paying attention to which sign of the zodiac that the Moon is in, since some signs are considered fruitful and others barren.
Sample activities for a waxing Moon:
- Cut your hair if you wish it to grow faster. Similarly, you’d mow your lawn now if you wanted it to grow faster, but I don’t think I’ve ever heard someone say they wanted that to happen. Maybe if you’d just seeded your lawn, but then you wouldn’t have anything to mow yet.
- Sell things for the best chance at a good price. While selling something means you’re getting rid of it (waning Moon), you’re focusing on what you can get for it, which relates to the waxing Moon. Centuries ago, the astrologer Dorotheus of Siddon concluded that the second quarter is better than the first for getting a good price, so this is when I haul books to the used book store.
- Plant annuals. Usually we’re interested in their flowers, fruit, and/or leaves, which counts as above-the-ground.
- Harvest herbs for their flowers and/or leaves.
Sample activities for a waning Moon:
- Cut your hair if you wish it to grow slower. Ditto for mowing the lawn, only I bet this will be a much more popular time.
- Declutter a closet, clean out the garage, etc.
- Plant biennials, perennials, bulbs, trees, and root vegetables. The waning Moon favors the roots, and you want good root structure to support these plants for years—or to make great potatoes and carrots for this year.
- Harvest herbs for their roots.
- Weed the garden.
- Prune trees and shrubs.
But does it work? I…don’t know. I choose to act as if it does. I prefer the idea of a cosmos in which energy moves in accordance with planets, where waxing and waning moons have observably different effects. It’s a major part of the “magical lifestyle” I want. At a practical level, it gives me deadlines to work to: clean out the refrigerator before the Moon begins to wax again, remember to sell these books before the Moon becomes full or be stuck with them for another month. And if that gets me to do something that needs to be done, a lot of the time, that’s enough.