The Simple Rule of Three Makes Gardening Easier and Gardens More Interesting In the world of garden design, the “Rule of Three” is a foundational principle that enhances visual interest and balance. By planting in odd numbers—especially in groups of three—you can create more visual pleasing plant arrangements. Quite simply, using plants in groups of three, five, or seven looks better than symmetrical, even-numbered groupings. This technique works well in beds, borders, and containers, and is easy for both beginner and experienced gardeners to apply. Odd-numbered groupings, particularly trios, create focal points and draw the eye in a dynamic way. Below, we explore five popular plants that are especially effective when used in groups of three. We have also included growing tips and reasons to love these plants! Coneflowers (Echinacea purpurea) and the Rule of Three in Gardening USDA Zones: 3–9Mature Size: 2–4 feet tall, 1–2 feet wide.Light Needs: Full sunSoil: … [Read more...] about The Rule of Three in Gardening: A Simple Key to Visual Harmony