New spikes?

[gamistriotis]

I have chopped my phal spikes and it's closing to the end of summer here in Greece(link below). When should I expect a new spike? ( if there will be one). I took the big step and placed them outside. It's been a week and all seems great... Hopefully all will be ok. There is a thing that grows on the side of one of them but I've been told that it's a root. Which either way is a good thing.