I think I gave the wrong site.

This should be it
https://www.facebook.com/greenrenaissance/photos/a.210721328945659.58322.120085081342618/837429619608157/?type=1

Never thought of using them as planters. Wonder if orchids would do well. May try that.

Site is a little suspect though. Not uploading the link.

Glad to see you growing loofah. just starting to get some big enough to eat
They seem to germinate very well I have one coming up as volunteers. Anybody in the Gotha area are welcome to seedling
Naturally yours Tommy Luffa seed