With any celebrity business, a famous face only gets you so far. It takes a skilled behind-the-scenes team to translate star power into compelling products. And in the case of Houseplant, the weed paraphernalia brand led by actor Seth Rogen, credit for many of the company’s early launches goes to Castor Design. The Toronto- and (lately) Detroit-based studio’s A-list clientele doesn’t stop there, either: It’s also the gang cooking up handsome kitchen gear for Matheson, a venture from chef (not to mention producer and cast member of The Bear) Matty Matheson.
How did a 15-year-old design team otherwise best known for its lighting become the king of celebrity side hustles? To some degree, Castor has always been part of
