The earthworm castings are just like soil and can withstand any temperature. They do not go bad or expire. In fact, they get better with time. Worm Castings become moist or dry based on the surrounding humidity. You can rehydrate by misting with water.
VermisTerra Tea is best stored between 40-90 degrees Fahrenheit, best not to let it freeze. VermisTerra tea has a shelf life of 1-2 years if you keep it stored out of the sun and do not let it freeze. Once water is added to the concentrate, feed into the soil within 24 hours.
Prevent water from entering the bottle of concentrate. It is normal for VermisTerra tea to have a manure stink. After all, “the funk brings the flavor” and your plants will love it.