worm castings

So I have a terrible time with my plants. An alpaca farmer that my children have been helping gave me a 5# bag of this dirt and told me that it was from his worm farm. He uses the alpaca poo and some other items in his worm farm. It makes a very rich soil. He told me to use half potting soil and half of the dirt he gave me. I actually used about 1/3 of his dirt and 2/3 potting soil. I decided to see if I could save this spider plant that my cat was destroying. With in a couple of days I could see the plant was perking up. Now a few weeks later it is striving!! Now which plant to save next. I will post more when I use it it on other plants. I'll have to post pictures because I think I will become a great houseplant grower after all! This is really good soil! I would recommend it to anyone!