Mustard (Brassica rupestris): The Mystery Plant That’s Harder to Find Than Your Car Keys
Ever stumbled across a plant name that makes you scratch your head and wonder if someone was just making up botanical names for fun? Well, meet Brassica rupestris, commonly known as mustard – a plant so elusive that even Google seems to shrug its digital shoulders when you search for it.



The Great Plant Detective Story
Here’s the thing about Brassica rupestris: it’s like that friend who’s always just around the corner but never actually shows up to the party. While the Brassica family is famous for giving us everything from cabbage to kale to actual mustard, this particular species seems to have mastered the art of staying off the radar.
The limited information available makes it challenging to provide definitive guidance about where this plant naturally occurs or what regions it calls home. Without clear geographical distribution data, we’re essentially playing botanical hide-and-seek.
Should You Grow This Mysterious Mustard?
Here’s where things get interesting (and a bit frustrating). With so little reliable information available about Brassica rupestris, recommending it for your garden would be like suggesting you buy a mystery box – you might get something wonderful, or you might end up with a handful of confusion.
What We Don’t Know (And Why That Matters)
When it comes to this particular mustard, we’re missing some pretty crucial details:
- Native status and geographical range
- Growth habits and mature size
- Preferred growing conditions
- USDA hardiness zones
- Invasive or noxious potential
- Wildlife and pollinator benefits
A Better Path Forward
Instead of chasing this botanical ghost, consider exploring well-documented members of the Brassica family that can actually deliver on their garden promises. Native mustard species in your region will offer reliable performance, known wildlife benefits, and the satisfaction of supporting local ecosystems.
The Takeaway
Sometimes in gardening, as in life, it’s better to go with what you know works rather than gambling on the unknown. While Brassica rupestris might sound intriguing, the lack of available cultivation information makes it a risky choice for most gardeners.
If you’re dead set on growing something from the mustard family, talk to your local native plant society or extension office about mustard species that are actually documented, available, and appropriate for your region. Your garden (and your sanity) will thank you for it.