Although the tree is rooted in the ground, the blessing of fruit from the tree (ha'etz) differs from fruit of the ground (ha'adama).
It is the custom to eat fruits of all kinds preceded by a single blessing.
The Tu B'Shvat seder
"A feast to sing the praises of Eretz Israel, a country that produces wheat and barley, grapes, figs and pomegranates, olive oil and the honey." (Deuteronomy 8.8)
1) Wheat and barley: (a pastry or biscuit)
"Baruch ata Adonai Elokeinu melekh aolam boreh mineh mezonot"
2) Olives (fruit of the tree)
"Thou will possess olive trees within all thy borders" (Deut. 28.40)
"Baruch ata Adonai Elokeinu melekh haolam boreh peri ha'etz"
3) Dates (or new fruit of the tree )
"The golden man flourishes like the date palm" (Psalm 92 13)
"Baruch ata Adonai Elokeinu melekh aolam shéhékhiyanu ve kiyemanu vee higuiyanu lazeman hazeh"
4) Grapes: A prayer is said over four cups of wine.
1st cup: white wine or white grape juice:
"Baruch ata Adonai Elokeinu melekh haolam boreh peri ha Gefen"
Fig: "Every man under his vine and his fig tree" (1st Kings v.5)
Pomegranate: "Let us rise early and go to the vineyards; let us see if the pomegranate trees are in bloom" (Song of Songs VII, 13)
Citron: "The fruit of the citron tree"
Apple: "Among the trees of the forest, like an apple tree .."
(Song of Songs I, 3).
Nuts: "I went down to the walnut grove" (Song VIII, 11)
Almond: "Flowering almond trees signal the New Year of Trees" (Poem)
Carob "This Galilee tree that grows in the shadow of the graves" (Talmud)
Pear: "The fruit of renewal of Eretz Israel"
2nd cup: White wine mixed with little red wine
3rd cup: Half a glass of white wine and half of red wine
4th cup: Red wine only.
From Dafina. net (French)