What is a Tree?

Eggplants grow on a woody stem. Does this make the eggplant a tree and prohibit the fruit that grows during its first three years as orlah or not? What is the correct beracha to recite when smelling carnations, lilies, or mint? What is the correct beracha to recite before eating papaya, cane sugar, or raspberries? May someone plant tomatoes in his vineyard in Eretz Yisroel?

Rabbi Yirmiyohu Kaganoff | Iyar 23 5781