"How can I be sure that my opinions about, or experience with, a certain plant are accurate enoguh, and generally applicable enough, to be worth submitting to the database?"
"Is it OK to add a comment or a data field entry if I learned it by reading books, magazines, or other online sources?"
"Is it usefull to enter the same comment to many species within a genus?" For example, pre-soaking Salvia seeds really speeds up sprouting and makes a higher % oif seeds sprout. However, that one comment could be added to hundreds of sp3ecies or cultivars. Maybe it is too generic to be added at all.