Q: I have a peach tree that is about 4 years old and it has been producing some really good peaches. Last year, it developed peach leaf curl in the spring. That summer, it didn’t produce much fruit, ...

Q: I received two citrus from a friend's garden. They have that pest that makes squiggles on the leaves. Should I treat them with an insecticide before or after I plant them? — R.S., Houston A: It's ...

THE disease known as peach-leaf curl is due to a fungus called Exoascus defonnans (Berk.), and seems to be more or less common and destructive wherever peach-trees are grown. It is almost confined to ...