To grow fresh alfalfa, you'll need alfalfa seeds and a sprouting jar with a perforated lid (available for purchase online and in many gardening centers). Add two tablespoons of alfalfa seeds to the jar. Cover with 1/2 cup of water and let soak overnight. Drain the seeds through the mesh lid and rinse thoroughly. Repeat. After eight hours, rinse and drain again. Store away from sunlight. Drain and rinse two to three times daily. Tiny sprouts will appear after around three days. Once the sprout tails develop, move the jar to indirect sunlight to help them turn green. They are ready to harvest and eat when the sprouts are 3 inches tall.