North America Native Plant

Hoffmann’s Nightshade

Botanical name: Solanum xanti var. hoffmannii

USDA symbol: SOXAH

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Hoffmann’s Nightshade: A Rare California Native Worth Knowing If you’re a California native plant enthusiast looking to add something truly special to your garden, let me introduce you to Hoffmann’s nightshade (Solanum xanti var. hoffmannii). This perennial herb might not be the flashiest plant in the nightshade family, but it ...

Rare plant alert!

Region: Conservation status by state

Status: S5T3?: Status is uncertain but is somewhere between the following rankings: Inexact rank: ⚘ Subspecies or variety is vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals. ⚘ Secure: At very low or no risk of extinction in the jurisdiction due to a very extensive range, abundant populations or occurrences, with little to no concern from declines or threats. ⚘

Hoffmann’s Nightshade: A Rare California Native Worth Knowing

If you’re a California native plant enthusiast looking to add something truly special to your garden, let me introduce you to Hoffmann’s nightshade (Solanum xanti var. hoffmannii). This perennial herb might not be the flashiest plant in the nightshade family, but it carries the distinction of being a unique variety native to the Golden State.

What Makes Hoffmann’s Nightshade Special?

Hoffmann’s nightshade is a perennial forb – essentially a non-woody plant that comes back year after year. As a variety of Solanum xanti, it belongs to the fascinating nightshade family, which includes everything from tomatoes to petunias. What sets this particular variety apart is its exclusive California heritage and its somewhat mysterious nature in the gardening world.

Where Does It Call Home?

This California native has made its home exclusively within the state’s diverse landscapes. As a plant that evolved here over thousands of years, it’s perfectly adapted to California’s unique climate patterns and soil conditions.

A Word of Caution: Rarity Matters

Here’s where things get interesting – and important. Hoffmann’s nightshade has a Global Conservation Status of S5T3?, which essentially means its conservation status is undefined or uncertain. This ambiguity suggests that this variety might be uncommon or poorly documented in the wild.

If you’re considering adding this plant to your garden, I strongly encourage you to source it responsibly. This means:

  • Purchasing from reputable native plant nurseries
  • Ensuring the plant material comes from ethical propagation, not wild collection
  • Supporting conservation efforts for California’s native flora

The Growing Challenge

I’ll be honest with you – growing Hoffmann’s nightshade presents a unique challenge because detailed cultivation information is quite limited. This scarcity of growing guides actually reflects the plant’s rarity and specialized nature.

What we do know is that as a California native perennial forb, it likely thrives in conditions similar to its natural habitat. This probably means:

  • Well-draining soils
  • Mediterranean-style climate conditions
  • Minimal summer water once established

Why Consider This Plant?

Despite the challenges, there are compelling reasons to consider Hoffmann’s nightshade:

  • Conservation impact: Growing rare natives helps preserve California’s botanical heritage
  • Authenticity: Few plants are more California than an exclusive state native
  • Uniqueness: Your garden will feature something genuinely uncommon
  • Ecosystem support: Native plants support local wildlife in ways non-natives simply cannot

The Bottom Line

Hoffmann’s nightshade isn’t for everyone, and that’s okay. It’s a plant for the dedicated native plant gardener who values conservation and uniqueness over ease of cultivation. If you’re drawn to rare plants and want to contribute to preserving California’s natural heritage, this might be worth seeking out – just remember to source it responsibly.

Before diving in, I’d recommend connecting with local native plant societies or contacting botanical gardens in California. They might have more specific growing information or know where to find responsibly propagated specimens.

Sometimes the most rewarding plants in our gardens are the ones that challenge us to become better stewards of our local ecosystems. Hoffmann’s nightshade might just be one of those special plants.

Hoffmann’s Nightshade

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Solanales

Family

Solanaceae Juss. - Potato family

Genus

Solanum L. - nightshade

Species

Solanum xanti A. Gray - chaparral nightshade

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