Rowan wood was burned by druids of opposing armies to summon spirits-to take part of battle. The Silver Branch that is often carried in Druid rites and ceremonies, is usually made of Rowan, to celebrate and honor the Goddess. It has many medicinal values and is a great ornamental for most homes and is great for attracting birds. The wood is good for fence posts, ships, and walking sticks. Rowan bark will dye fabric grey.
Walnut is regarded as a sinister tree.
It kills any vegetation near it. Walnut trees seem to especially dislike oaks. In Bologna it was believed that witches held their meeting under a walnut tree on Midsummer's Eve. European folklore also tells us that a heavy crop of walnuts indicates a harsh winter. To dream of walnuts implies unfaithfulness in relationships.