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North America Non-native Plant

Lilac Snapdragon

Lilac Snapdragon: A Mysterious Member of the Snapdragon Family If you’ve stumbled upon the name lilac snapdragon (Antirrhinum bellidifolium) in your gardening research, you’re likely encountering one of the more elusive members of the beloved snapdragon family. While most gardeners are familiar with the common garden snapdragon, this particular species ...

Lilac Snapdragon: A Mysterious Member of the Snapdragon Family

If you’ve stumbled upon the name lilac snapdragon (Antirrhinum bellidifolium) in your gardening research, you’re likely encountering one of the more elusive members of the beloved snapdragon family. While most gardeners are familiar with the common garden snapdragon, this particular species remains something of a botanical mystery.

What We Know About Lilac Snapdragon

Antirrhinum bellidifolium belongs to the snapdragon genus, sharing the characteristic dragon mouth flowers that children love to squeeze open and shut. As a forb—essentially a non-woody herbaceous plant—it lacks the woody stems of shrubs and trees, instead growing as a soft-stemmed flowering plant.

This species is classified as both biennial and perennial, meaning it may complete its lifecycle in two years or continue growing for multiple seasons, depending on growing conditions and climate.

The Information Gap

Here’s where things get a bit puzzling for gardeners: reliable information about this specific snapdragon species is surprisingly scarce. Unlike its famous cousin, the garden snapdragon (Antirrhinum majus), details about lilac snapdragon’s native range, specific growing requirements, and garden performance are not well-documented in standard horticultural resources.

The geographic distribution of this species remains unclear, making it difficult to determine where it naturally occurs or whether it would be appropriate for native plant gardens in any particular region.

Should You Grow Lilac Snapdragon?

Given the limited information available, growing lilac snapdragon presents some challenges for the average gardener:

  • Unclear native status makes it difficult to recommend for native plant gardens
  • Unknown growing requirements mean you’d be experimenting with care
  • Limited availability from nurseries or seed suppliers
  • Uncertain hardiness zones and climate preferences

Better Alternatives for Your Garden

If you’re drawn to snapdragon-type flowers, consider these well-documented alternatives:

  • Native penstemon species – Often called beardtongue, these offer similar tubular flowers and are native across North America
  • Native monkey flowers (Mimulus species) – Provide snapdragon-like blooms with known growing requirements
  • Garden snapdragon (Antirrhinum majus) – The reliable, well-studied cousin with extensive cultivation information

If You’re Determined to Try It

Should you locate seeds or plants of Antirrhinum bellidifolium, approach cultivation experimentally. Since it’s a forb in the snapdragon family, you might start with growing conditions similar to other snapdragons: well-draining soil, moderate water, and full sun to partial shade. However, be prepared that this is largely guesswork without species-specific data.

The Takeaway

While lilac snapdragon sounds lovely in name, the lack of reliable growing information makes it a risky choice for most gardeners. Your time and garden space might be better invested in well-documented native plants that will provide proven benefits to local wildlife and ecosystems. Sometimes the most mysterious plants are mysterious for good reason—they may be rare, difficult to grow, or simply not well-suited to cultivation.

Instead of chasing botanical ghosts, consider exploring the wealth of native flowering plants in your region that offer similar aesthetic appeal with the bonus of supporting local pollinators and wildlife.

Lilac Snapdragon

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

Scrophulariales

Family

Scrophulariaceae Juss. - Figwort family

Genus

Antirrhinum L. - snapdragon

Species

Antirrhinum bellidifolium (L.) Willd. - lilac snapdragon

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