luucky
have a look at this link that will show you all the "Sticky" threads in that section.
Orchid Care Cultivation - Orchid Forum Orchid Care
the ones that are "sticky" are considered important and they are threads that we do not want lost in between the normal threads.
A "Sticky" is also made by the Forum Staff Members Only.
A Sticky may also be important information that you may need to know from the Forum Staff.
Also if a member refers to a sticky you know what is being said ( a thread that is sticky )
If you see what you may think is important information that you think all the members could use to help with orchid knowledge you may also suggest the thread be made "Sticky"