Each plant page has a COMMENTS & QUESTIONS tab where people often post their personal experience with a plant.
You can also use the GARDENS tab to see which member gardens are listed as growing this plant. Pick the gardens with conditions similar to yours and go to their member pages to send them a question using the COMMENTS & QUESTIONS tab found there.
You can also send them a private message but doing that deprives other members of the insight learned. Remember, this website is all about pooling our knowledge and experience for everyone to share.