Named for the Norse god Tyr, who was a deity of heroism and combat, Tuesday is a very martial sort of day—color associations include bright red and oranges, as well as warrior-like metals such as iron and steel.
The ancient Romans called this day Martis, after the warrior god Mars—other deities associated with Tuesday include Ares, the Morrighan, and other gods of battle and glory. Red gemstones like rubies and garnets come into play on Tuesdays, as do herbs and plants such as thistles, holly, coneflowers, and cacti—you’ll notice these are all sharp, prickly plants!
One of the interesting—and more than a little amusing—aspects of Tuesday magic is that in addition to war and conflict against your enemies, this is a day also associated with marriage. You can also use this day of the week for magical workings connected to protection and initiation. Use Tuesday to assert yourself, make a mark and stake your claims.