North America Native Plant

Larkspur

Botanical name: Delphinium ×inflexum

USDA symbol: DEIN7

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Larkspur (Delphinium ×inflexum): A California Native Worth Knowing If you’re passionate about native gardening and looking for a perennial that brings a touch of California’s wild beauty to your landscape, you might want to get acquainted with Delphinium ×inflexum, commonly known as larkspur. This lesser-known native hybrid represents the fascinating ...

Larkspur (Delphinium ×inflexum): A California Native Worth Knowing

If you’re passionate about native gardening and looking for a perennial that brings a touch of California’s wild beauty to your landscape, you might want to get acquainted with Delphinium ×inflexum, commonly known as larkspur. This lesser-known native hybrid represents the fascinating world of natural plant crosses that occur in the wild.

What Makes This Larkspur Special?

Delphinium ×inflexum is a perennial forb – essentially a soft-stemmed herbaceous plant that lacks the woody tissue you’d find in shrubs or trees. As a hybrid species (indicated by the × in its name), this larkspur represents a natural cross between two parent Delphinium species, creating something uniquely adapted to California’s diverse landscapes.

This native beauty calls California home, making it a fantastic choice for gardeners looking to support local ecosystems while adding authentic regional character to their gardens.

Why Consider This Native Larkspur?

Choosing native plants like Delphinium ×inflexum offers several compelling benefits:

  • Naturally adapted to local climate conditions
  • Supports regional wildlife and pollinators
  • Typically requires less water once established
  • Helps preserve California’s botanical heritage
  • Adds authentic local character to your landscape

Growing Delphinium ×inflexum: The Reality Check

Here’s where we need to be honest with you – specific growing information for this particular hybrid is quite limited in readily available sources. This isn’t uncommon with natural hybrids, especially those that haven’t been widely cultivated or studied extensively.

However, we can make some educated assumptions based on its classification as a California native perennial forb. Like most native plants, it likely prefers:

  • Well-draining soil
  • Seasonal watering patterns that mimic natural rainfall
  • Full sun to partial shade conditions
  • Minimal fertilization once established

The Challenge and the Opportunity

The limited availability of detailed horticultural information about Delphinium ×inflexum presents both a challenge and an opportunity. If you’re drawn to this native larkspur, you might need to do some detective work or connect with local native plant societies, botanical gardens, or university extension programs that specialize in California flora.

This could also be an exciting opportunity for the adventurous gardener to contribute to our collective knowledge about this native hybrid through careful observation and documentation of its growing habits.

Alternatives to Consider

While you’re researching Delphinium ×inflexum, you might also want to explore other California native Delphinium species that are better documented and more readily available, such as Delphinium cardinale (scarlet larkspur) or Delphinium parryi (San Bernardino larkspur), depending on your specific region within California.

The Bottom Line

Delphinium ×inflexum represents the fascinating complexity of California’s native flora, but it’s definitely a plant for the dedicated native gardening enthusiast who enjoys a bit of mystery and research. If you’re up for the challenge and can source this hybrid responsibly, it could be a unique addition to your native garden that truly connects you to California’s natural heritage.

Just remember – successful native gardening often involves patience, observation, and a willingness to learn alongside your plants. Sometimes the most rewarding garden experiences come from working with species that haven’t been thoroughly domesticated by the horticultural trade.

Larkspur

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Magnoliidae

Order

Ranunculales

Family

Ranunculaceae Juss. - Buttercup family

Genus

Delphinium L. - larkspur

Species

Delphinium ×inflexum Davidson (pro sp.) [cardinale × parryi] - larkspur

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