Worm castings, also known as vermicast, are a worm’s manure in its natural form. The waste produced by worms as they eat compost, natural decaying debris in the soil becomes a nutrient-rich soil additive.
The manure is high in magnesium, nitrates, phosphorus, potassium, zinc, borax, iron, carbon, calcium, copper, cobalt, and nitrogen.
Worm castings are generally a dark brown in color and football-shaped. When added to the soil they improve soil aeration and increase the soil’s water-retention abilities.  3 lb Bag for $10

Worm tea is the end result of steeping worm castings in water.  It is like liquid gold for your soil.  It is a powerful nutrient,  containing all the benefits of worm castings.  1 gallon jug for  $20