Measure the cinnamon, ginger, nutmeg, allspice, and cloves into a small bowl, making sure each spice is measured accurately before mixing everything together.
Gently whisk the spices together until evenly blended. Break apart any small lumps of ginger or cloves so the spice mixture has a smooth, uniform consistency.
Transfer the blended spices into a clean, dry 4-ounce spice jar or another small airtight container. Use a small funnel to help prevent spills and messes.
Label the container with the spice blend name and the date it was prepared. Store the tightly sealed jar in a cool, dry place until needed. Use in all your favorite pumpkin recipes.