North America Non-native Plant

Yellow Sarson

Botanical name: Brassica rapa var. trilocularis

USDA symbol: BRRAT

Native status: Not native but doesn't reproduce and persist in the wild

Synonyms: Brassica campestris L. var. sarson Prain (BRCAS)  ⚘  Brassica rapa L. ssp. sarson (Prain) Denford (BRRAS2)  ⚘  Brassica trilocularis (Roxb.) Hook. f. & Thomson (BRTR3)   

Yellow Sarson: The Lesser-Known Mustard Variety If you’ve stumbled across the name yellow sarson in your plant research, you might be wondering what exactly this mustard relative is all about. While most gardeners are familiar with common mustard greens, yellow sarson (Brassica rapa var. trilocularis) is a bit of a ...

Yellow Sarson: The Lesser-Known Mustard Variety

If you’ve stumbled across the name yellow sarson in your plant research, you might be wondering what exactly this mustard relative is all about. While most gardeners are familiar with common mustard greens, yellow sarson (Brassica rapa var. trilocularis) is a bit of a botanical mystery in the ornamental gardening world.

What is Yellow Sarson?

Yellow sarson is a variety of Brassica rapa, making it a cousin to turnips, bok choy, and field mustard. This annual plant has been cultivated primarily in South Asian agriculture, particularly in India and Pakistan, where it’s grown as an important oilseed crop. You might also see it referenced under several botanical synonyms, including Brassica campestris var. sarson and Brassica trilocularis.

Geographic Origins

While the exact native range isn’t definitively documented, yellow sarson appears to have originated in South Asia, where it continues to play an important role in agricultural systems today.

The Garden Reality Check

Here’s where things get interesting – or perhaps disappointing if you were hoping to add this to your garden wishlist. Yellow sarson is primarily an agricultural crop rather than an ornamental plant. Unlike its showier Brassica relatives that grace many gardens with bright flowers and attractive foliage, this variety has been bred for oil production rather than garden appeal.

Information about its ornamental qualities, wildlife benefits, and specific growing requirements for home gardens is surprisingly scarce. This suggests that yellow sarson simply isn’t commonly used in landscape design or home gardening applications.

Why You Probably Won’t Find It at Your Local Nursery

Several factors make yellow sarson an unlikely candidate for your typical home garden:

  • It’s bred for agricultural use, not ornamental appeal
  • Limited availability through typical gardening channels
  • Lack of established growing guidelines for home gardeners
  • Unknown benefits for pollinators and wildlife in garden settings

Better Alternatives for Your Garden

If you’re interested in growing mustard family plants, consider these more garden-friendly options:

  • Wild mustard (Brassica rapa) – The parent species, which may be native to your area
  • Field mustard – Often provides similar yellow flowers with known wildlife benefits
  • Native mustard species – Check with your local native plant society for regional alternatives

The Bottom Line

While yellow sarson has its place in agricultural systems, it remains something of an enigma in the gardening world. If you’re drawn to mustard family plants, you’ll likely find more success and satisfaction with varieties that have been specifically selected or are naturally suited for ornamental use.

Sometimes the most interesting plants are those that remind us how vast and varied the plant kingdom is – even if they’re not destined for our backyard gardens. Yellow sarson falls into this category: fascinating from a botanical perspective, but better left to the agricultural fields where it truly belongs.

Yellow Sarson

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Dilleniidae

Order

Capparales

Family

Brassicaceae Burnett - Mustard family

Genus

Brassica L. - mustard

Species

Brassica rapa L. - field mustard

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA