June 22 marks the new moon in June. A new moon refers to when there is no moon visible in the night sky. The natural astronomical pressure works in a gardener's favor making it an excellent time for seeds to germinate. It usually rains during this week. This time of year, this phase of the moon is excellent time to plant cover crops like buckwheat or leafy greens like collard or basil. In cooler months, this is the best phase of plant lettuce and brassicas.