They offer sweet citrus fruit, and their blossoms smell ... fennel near lemon trees. “It has allelopathic properties that inhibit any type of nearby plant growth,” says Sons. Like black ...

and petunias grow nicely in these warm regions as well. In fact, petunias can be cultivated as perennials in zones 10a through 11b, so you'll rarely have to replant them there. Like lemon trees ...