Always a great reaction by Nepenthes when using Osmocote. Joe Mazrimas, Founder of the ICPS and the CPN, has always used Osmocote on his neps. The type Joe used was Osmocote 10-10-10. Always seemed to work wonders with nepenthes! This was back in 1983 or so when he divulged this to me, but it is in an issue of the CPN somewhere.