Rinse the spinach, kale, cucumber, celery, parsley, apple, lemon, and ginger under cool running water. Cut the cucumber and celery into small pieces for easier blending. Remove the apple core and slice the apple. Peel the lemon and cut the ginger into a few smaller chunks.

Place the spinach, kale, cucumber, celery, parsley, lemon, and ginger into a blender. Blend until the ingredients break down into a smooth, evenly mixed mixture.

Add the sliced apple and blend once more until the texture is completely smooth. If you prefer a lighter, smoother drink, pour the mixture through a fine strainer or nut milk bag into a large pitcher.

Fill serving glasses with ice cubes. Pour the freshly prepared green juice over the ice and serve right away while the flavor is fresh and vibrant.