*And obviously 1 copy of Ra as well in the deck. You can also use SRH to protect your monster.
Do not summon Bergamot unless you are extremely forced to, as Bergamot's piercing effect actually can ruin your farming, especially when it has 3900 ATK.
I used Snipe Hunter to dump Carrot/Rose Lover/unneeded card to the grave, and possibly destroy an annoying card.
Rose Lover and Carrot are necessary, as usually the LD still has one face-down monster on the field when you summon Ra.
So keep 1 Plant monster in your hand.
Dunno if my build is good, but hey, it worked for me.
Another possible build makes use of Jasmine combined with Aroma Garden, Air Hummingbird, and other LP healing cards, plus Spirit Barrier + Astral Barrier combo.
You basically stall until your LP is high enough for Ra to deal 9999+ damage.
Astral Barrier + Spirit Barrier combo protects your monster and LP from battles.
But if Bergamot is on your field, the opponent will still receive damage when you attack, which can ruin your farming if the damage is high enough to win the duel immediately.