North America Native Plant

Texas Nightshade

Botanical name: Solanum triquetrum

USDA symbol: SOTR2

Life cycle: perennial

Habit: vine

Native status: Native to the lower 48 states  

Texas Nightshade: A Native Shrub for Wildlife-Friendly Gardens If you’re looking to add native plants to your Texas landscape that support local wildlife, Texas nightshade (Solanum triquetrum) might just be the under-the-radar shrub you’ve been searching for. This perennial native offers a unique combination of wildlife value and regional authenticity ...

Texas Nightshade: A Native Shrub for Wildlife-Friendly Gardens

If you’re looking to add native plants to your Texas landscape that support local wildlife, Texas nightshade (Solanum triquetrum) might just be the under-the-radar shrub you’ve been searching for. This perennial native offers a unique combination of wildlife value and regional authenticity that makes it worth considering for the right garden setting.

What is Texas Nightshade?

Texas nightshade is a native perennial shrub that calls the Lone Star State home. As a member of the nightshade family, it shares ancestry with more familiar plants like tomatoes and potatoes, though this wild cousin has carved out its own ecological niche in the Texas landscape.

This multi-stemmed woody plant typically grows as a shrub, usually staying under 13 to 16 feet in height. Like most shrubs, it develops several stems from or near ground level, creating that classic bushy appearance that provides structure to natural landscapes.

Where Does Texas Nightshade Grow?

Currently documented in Texas, this native species has adapted to thrive in the unique conditions of the American Southwest. Its presence in Texas suggests it’s well-suited to the climate challenges that come with gardening in this region.

Wildlife Benefits: A Dining Table for Local Animals

Here’s where Texas nightshade really shines – it’s like a wildlife cafeteria! Research shows that this shrub provides a significant food source for both large animals and terrestrial birds, contributing about 5-10% of their diet. While it may not be their first choice for cover, the nutritional value it offers makes it an important piece of the ecosystem puzzle.

For gardeners interested in supporting local wildlife, this kind of documented wildlife value is exactly what you want in a native plant. It’s not just taking up space – it’s actively feeding the creatures that call your area home.

Should You Plant Texas Nightshade?

As a native Texas plant, Texas nightshade gets the green light for environmentally conscious gardeners. Since it’s not listed as invasive or noxious, you can plant it with confidence that you’re not introducing something that will cause ecological problems.

However, there are some considerations:

  • Limited availability: This isn’t a common nursery plant, so sourcing might be challenging
  • Specialized growing information: Detailed care instructions are scarce
  • Regional specificity: Best suited for Texas gardens and similar climates

Growing Texas Nightshade: What We Know

Unfortunately, specific growing requirements for Texas nightshade aren’t well-documented in gardening literature. This is pretty common with lesser-known native species – they often get overshadowed by their showier cousins.

What we do know is that as a Texas native shrub, it likely prefers:

  • Well-draining soil (most Texas natives do)
  • Full to partial sun exposure
  • Drought tolerance once established
  • Minimal fertilization needs

Landscaping with Texas Nightshade

Given its shrub form and wildlife value, Texas nightshade would work well in:

  • Wildlife gardens focused on supporting local animals
  • Native plant landscapes
  • Natural or informal garden settings
  • Areas where you want to provide food sources for birds and mammals

The Bottom Line

Texas nightshade represents the kind of native plant that deserves more attention from gardeners interested in supporting local ecosystems. While it may not have the flashy flowers or well-documented growing guides of more popular plants, its proven wildlife value and native status make it a worthy addition to the right garden.

If you can source this plant responsibly and you’re gardening in Texas, consider giving Texas nightshade a try. You’ll be supporting local wildlife while adding an authentic piece of Texas flora to your landscape. Just be prepared to do a bit of experimenting when it comes to care – sometimes the best gardening adventures come from working with plants that haven’t been gardened to death yet!

Wildlife Status

Want to attract wildlife or keep hungry critters away from your garden? Understanding the relationship between plants and wildlife is key. While plant tags may indicate deer and rabbit resistance, they don't tell the full story. Every gardener has experienced the disappointment of purchasing "deer-resistant" plants only to find them nibbled to the ground!

The extent to which plants are resistant to animal browsing is a matter of degree. Likewise, the extent to which a plant attracts wanted visitors also varies. Whether you want a garden full or free of wildlife, learning about interactions between a plant and wild animals can help you make smarter choices for the garden you desire.

As shown below Shrubby Indian Mallow isn't a large food source for animals or birds. You can confidently add this plant to your garden and rest assured knowing it's unlikely to be devoured by four-legged visitors.

Small animals

not a food source

not a source of cover

Large animals

5-10% of diet

Infrequently used as cover

Terrestrial birds

5-10% of diet

Infrequently used as cover

Water birds

not a food source

not a source of cover

Sources:

Everitt, J.H., D.L. Drawe, and R.I. Lonard. 1999. Field guide to the broad leaved herbaceous plants of South Texas used by livestock and wildlife. Texas Tech University Press. Lubbock.

Texas 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 triquetrum Cav. - Texas nightshade

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