I can usually tell sooner, but I don't know how to explain the little
differences that I see. But usually, by the time whichever-it-is is about
1/2" long, then if it's a root you should see some of the white velamen
forming. Kenni

wrote in message
...
Hi all: Someone tell me again how to tell the difference between a
root and a spike? This growth is on the base of the plant, is green,
coming straight out and yes it's pointed. Root right? I'm still
waiting to see what it'll become. It's a Phal. Thanks.....Burr