Benzinga sat down with Daniel Cruz, co-founder and CFO of Sea to Sky Farms, an innovative vertical farming company ... that can grow a full head of Romaine lettuce with the root on.

These are very small companies, which makes them highly risky. That disclaimer aside, here's a closer look at some of these indoor vertical ... including building new vertical farms.

CLEBURNE — Walls of carefully spaced herb and lettuce plants rise to the ceiling of a massive greenhouse. Inside Eden Green Technology’s 62,000-square-foot vertical greenhouse, over 340,000 ...