The Seven Species (Most Sources from "A Person is Like a Tree," by Rabbi Yitzhak Buxbaum)

(8) a land of wheat and barley, of vines, figs, and pomegranates, a land of olive trees and [date] honey;

Thus David has said (in Ps. 78:36-37): YET THEY DECEIVED HIM WITH THEIR MOUTH, AND WITH THEIR TONGUE THEY LIED TO HIM, FOR THEIR HEART WAS NOT STEADFAST WITH HIM. See, < they were > LIKE GRAPES IN THE DESERT. Just as the grapes have food and drink within them, so Israel has within itself children of Torah (i.e., scholars) and has within itself children of action.

Just as, with a grape, its guardian stands above, so too, with Israel, its guardian is above, as it says (Psalms 121:4): "Behold the guardian of Israel neither slumbers nor sleeps.

Just as, with a grape, it rests on dry wood, yet it is moist, so too, Israel rests on the merit of their ancestors, even though they sleep. This is why it says, "and I will remember my covenant with Jacob..."

Another explanation: why is the Torah compared to a fig? Rather, all fruits contain something inedible: dates have pits, grapes have seeds, pomegranates have shells. However, a fig is completely good to eat. Similarly, the words of Torah do not have anything unfit...

The Roman Caesar Adrianus was once leading his troops to war to fight against a country that had rebelled against him. On the way, he came accross an old man planting sprouts for fig trees. "How old are you?" asked Adrianus.

"One hundred," he replied.

"You're a hundred years old," said Adrianus, "and you're troubling yourself to plant fig trees? Do you think you'll live to eat from them?"

"My lord king," the man answered, "if I merit it, I'll eat from the trees; if not, just as my ancestors troubled themselves to plant for me, so I am planting for my descendants."

Adrianus was away at war for three years. On his return, he found the old man at the same place. The old man took a small basket, filled it with fine firstfruits of figs, and came before Adrianus. He said, "My lord king, please accept these from your servant. I am the old man that you found planting when you set out; you said to me; 'You're old, why should you trouble yourself for others.' God has already rewarded me and let me eat the fruits of my planting--these in the basket are for you." Adrianus said to his servants, "Take the figs from him and reward him by filling his basket with gold coins."

(Translation by Buxbaum)

The Gemara relates: Rabba bar Sheila found Elijah the prophet, who had appeared to him. He said to Elijah: What is the Holy One, Blessed be He, doing? Elijah said to him: He is stating halakhot transmitted by all of the Sages, but in the name of Rabbi Meir He will not speak. He said to him: Why? He replied: Because he learned halakhot from the mouth of Aḥer. He said to him: Why should he be judged unfavorably for that? Rabbi Meir found a pomegranate and ate its contents while throwing away its peel. He said to him: Indeed, your defense has been heard above.

"If the pomegranates were in bloom" (Song of Songs 6:11)-these are the children sitting and studying Torah, sitting in rows and rows like the seeds of a pomegranate.

One who sees pomegranates in a dream, if they were small, his business will flourish like the seeds of the pomegranate, which are numerous; and if they were large, his business will increase like a pomegranate. One who saw slices of pomegranates in his dream, if he is a Torah scholar, he should anticipate Torah, as it is stated: “I would cause you to drink of spiced wine, of the juice of my pomegranate” (Song of Songs 8:2), which is traditionally understood as an allusion to Torah. And if the dreamer is an ignoramus, he should anticipate mitzvot, as it is stated: “Your temples are like a split pomegranate” (Song of Songs 4:3). As the Gemara previously interpreted homiletically: What is the meaning of the word “Your temples [rakatekh]”? Even the most ignorant [reikanin] among you, Israel, are full of mitzvot like a pomegranate.

(1) A righteous person will flourish like a date palm. No part of the date palm is wasted: Its dates are eaten; its young branches are used for ritual blessing [of the lulav on sukkot]; its fronds cover the Sukkah; its fibers are used to make ropes; its leaves are used for sieves; its planed trunks are used for roof beams. So too there are none worthless in Israel: Some are versed in the Bible; others know Mishnah; some are masters of aggadah [storytelling]; others do good deeds; still others promote social equity.

Another explanation: just like with a date palm, its heart is directed above, so too, with Israel, as their heart is directed towards their Father in heaven, as it says (Psalms 25:15): "My eyes are always towards the LORD."