North America Non-native Plant

Delphinium Laxiflorum

Botanical name: Delphinium laxiflorum

USDA symbol: DELA9

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

Delphinium laxiflorum: An Elusive Member of the Larkspur Family If you’ve stumbled across the name Delphinium laxiflorum in your botanical wanderings, you’re likely dealing with one of the more mysterious members of the beloved larkspur family. This particular delphinium species represents something of an enigma in the gardening world – ...

Delphinium laxiflorum: An Elusive Member of the Larkspur Family

If you’ve stumbled across the name Delphinium laxiflorum in your botanical wanderings, you’re likely dealing with one of the more mysterious members of the beloved larkspur family. This particular delphinium species represents something of an enigma in the gardening world – a plant that exists in botanical records but remains largely absent from mainstream horticultural literature.

What We Know (And Don’t Know) About This Delphinium

Delphinium laxiflorum belongs to the diverse genus Delphinium, which includes hundreds of species of flowering plants known for their tall spikes of colorful blooms. However, unlike their more famous cousins that grace cottage gardens and perennial borders, this particular species keeps a much lower profile.

The lack of readily available information about Delphinium laxiflorum raises some important questions for gardeners. When a plant species has limited documentation, it often indicates:

  • Very restricted natural distribution
  • Possible rarity or conservation concerns
  • Limited cultivation history
  • Potential taxonomic uncertainty

Geographic Distribution and Native Status

Unfortunately, the geographic distribution and native range of Delphinium laxiflorum remain unclear from available sources. This lack of clear distribution data makes it difficult to determine where this species naturally occurs or whether it might be appropriate for specific regional gardens.

Should You Grow Delphinium laxiflorum?

Here’s where things get tricky. With so little information available about this species, it’s challenging to provide definitive growing advice or even recommend whether you should attempt to cultivate it. The scarcity of information suggests that seeds or plants of true Delphinium laxiflorum are likely not readily available through typical garden centers or even specialty native plant nurseries.

If you do encounter this species offered for sale, proceed with caution and ask detailed questions about:

  • The source of the plant material
  • Verification of the species identification
  • Whether it was responsibly collected
  • Its known growing requirements

Consider Well-Documented Alternatives

Rather than pursuing this elusive delphinium, you might want to consider other native larkspur species that are better documented and more readily available. Many regions have their own native Delphinium species that offer similar aesthetic appeal with the added benefits of:

  • Proven garden performance
  • Known growing requirements
  • Established seed sources
  • Documented wildlife benefits
  • Regional adaptability

The Responsible Plant Explorer’s Approach

If you’re particularly interested in rare or unusual delphinium species, consider connecting with botanical gardens, native plant societies, or university extension programs in your area. These organizations often have the expertise to help identify appropriate species for your region and can guide you toward responsibly sourced plant material.

Remember, part of being a responsible gardener means sometimes accepting that certain plants aren’t meant for our gardens – especially when we can’t be sure of their conservation status or proper care requirements.

The Bottom Line

Delphinium laxiflorum remains something of a botanical mystery, making it an impractical choice for most gardeners. Instead of chasing this elusive species, focus your energy on the many well-documented native plants that will thrive in your garden while supporting local ecosystems. Your local native plant society can help you discover the perfect larkspur or delphinium species that’s both available and appropriate for your specific location.

Sometimes the most interesting plants are the ones that remain wild and free, adding to the mystery and wonder of the natural world rather than our cultivated spaces.

Delphinium Laxiflorum

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 laxiflorum DC.

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