“Home Depot is a publicly traded company so you can look up their annual statements. They make more money on indoor garden than on any other product segment — more than lumber, paint, appliances. Roughly 11 billion dollars per year.”

Validate market with Home Depot's public filings — $11B indoor garden

Before committing to the plant space, Alex pulled Home Depot's 10-K to confirm indoor garden was their top revenue segment ($11B/yr) and sized the broader US plant retail market at ~$100B. Public filings are a cheap, hard-numbers validation step most founders skip in favor of TAM-on-vibes.