Plant the roots of the grapes outside of the greenhouse if possible, then weave the vines into the interior space and allow them to continue to grow. Grapes grown inside the greenhouse might need ...

If you live in a cooler climate, you'll likely need to grow grapes in a temperature-controlled environment like a greenhouse for best results, as grapes are plants that thrive in warm climates.

Narrator: They open the sides and ceilings of the greenhouse to keep it as cool and ventilated as possible. And still, not all the Ruby Roman grapes farmers grow will be up to standard.