Garden columnist Dan Gill answers readers' questions each week. To send a question, email Gill at [email protected]. I have a rather large avocado tree loaded with fruit. I have two questions.

Q. The house I rent has a mature avocado tree in the yard that produces big beautiful avocados that never seem to ripen. I’ve tried putting them in a brown paper bag and they turn dark but are hard as ...

Another common flaw in some avocados are woody strings that stretch through the flesh. These strings are part of the plant's ...