Q: I am interested in growing strawberry guava in southwest Las Vegas and want to know if these are good choices. Can you tell me what fruit and evergreen tree varieties have the best chance to ...

Maria asks: I’ve had a Feijoa for ten years and it has never produced fruit. What could be the reason? Pineapple guava, Feijoa sellowiana, frequently requires two plants to ensure cross-pollination.

Q. I saw variegated St. Augustine grass in a farmers market in Alexandria, Va. Have you heard of this grass? Where can I purchase it? — John Scheifel, Fort Lauderdale A. I have not heard of this grass ...