America's lumber supply is one trade dispute or one bad storm away from sending home construction costs surging by thousands of dollars. A startup in North Carolina thinks grass is the fix.

Plantd was founded by former SpaceX engineers who set out to replace oriented strand board — the structural panels that wrap the walls, floors, and roofs of nearly every home built in the US — with panels made from a perennial grass that grows six inches a day and can be harvested twice a year. Their boards are independently certified for use in all 50 states and, according to their own testing, are 1.5x stronger and 2x more moisture resistant than standard softwood OSB. D.R. Horton, the largest homebuilder in the country, has already ordered 10 million of them.

The catch: at 250k panels a year, that order alone would take 40 years to fill. Noelle went to Oxford, NC to see how Plantd plans to get there — and whether its bet on grass can hold up against one of America's oldest industries.

0:00 – America's Lumber Problem

1:44 – Why Grass, Why North Carolina?

2:32 – From SpaceX to Solving Housing

2:59 – The Spark: Talking to Builders About OSB

5:29 – What OSB Is (and Plantd's First Big Break)

4:25 – Finding the Super?Grass: Strength, Carbon, and Land Use

6:02 – The Modular Mill "Moat"

7:02 – Inside Plantd's Mini Mill: Turning Grass into Panels

10:12 – How Lumber Got So Volatile (Storms, Tariffs, and Baby Trees)