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North America Native Plant

Smooth Pricklypoppy

Smooth Pricklypoppy: A Rare Hawaiian Treasure Worth Protecting Meet the smooth pricklypoppy (Argemone glauca var. decipiens), a fascinating native Hawaiian plant that’s as intriguing as it is elusive. While you might not find this beauty at your local garden center, understanding its story helps us appreciate the incredible diversity of ...

Rare plant alert!

This plant is listed as rare and may be protected in certain regions. Its populations are limited, and removal from the wild could further endanger its survival. If you wish to enjoy this plant, consider sourcing from reputable nurseries that propagate responsibly or explore alternatives to help preserve natural populations.

Region: Conservation status by state

Status: S2T1T2: Status is uncertain but is somewhere between the following rankings: Subspecies or variety is critically Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 5 or fewer occurrences or very few remaining individuals (<1,000) ⚘ Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 6 to 20 occurrences or few remaining individuals (1,000 to 3,000) ⚘ Subspecies or variety is imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 6 to 20 occurrences or few remaining individuals (1,000 to 3,000) ⚘

Smooth Pricklypoppy: A Rare Hawaiian Treasure Worth Protecting

Meet the smooth pricklypoppy (Argemone glauca var. decipiens), a fascinating native Hawaiian plant that’s as intriguing as it is elusive. While you might not find this beauty at your local garden center, understanding its story helps us appreciate the incredible diversity of Hawaii’s native flora and the importance of conservation in our gardens.

What Makes This Plant Special?

The smooth pricklypoppy belongs to the poppy family and is classified as a perennial forb – essentially a soft-stemmed flowering plant that comes back year after year. Unlike its woody cousins, this herbaceous beauty lacks significant woody tissue and keeps its growing points at or below ground level, helping it survive Hawaii’s unique climate conditions.

Where Does It Call Home?

This remarkable plant is endemic to Hawaii, meaning it exists nowhere else on Earth. Its entire natural range is confined to the Hawaiian Islands, making it a true island treasure. Being geographically restricted to such a small area is part of what makes this species so special – and so vulnerable.

A Plant of Conservation Concern

Important Conservation Notice: The smooth pricklypoppy has a global conservation status of S2T1T2, indicating it’s quite rare in the wild. This rarity status means we need to be extra thoughtful about how we interact with this species.

If you’re interested in growing this plant, here’s what you need to know:

  • Source responsibly: Only obtain plants or seeds from reputable native plant societies or conservation organizations
  • Never collect from the wild: Taking plants or seeds from natural populations can harm already vulnerable populations
  • Support conservation efforts: Consider supporting Hawaiian native plant conservation programs instead of or in addition to growing the plant yourself

The Challenge of Growing Rare Natives

Unfortunately, detailed growing information for this specific variety is quite limited – which isn’t surprising given its rarity. This lack of cultivation information presents both challenges and opportunities for dedicated native plant enthusiasts willing to experiment and document their experiences.

As a Hawaiian endemic, it would likely prefer:

  • Conditions similar to its natural Hawaiian habitat
  • Well-draining soils
  • Protection from harsh winds
  • Careful attention to watering needs

Why Rare Plants Matter

You might wonder why we should care about a plant that’s difficult to find and grow. Rare native plants like the smooth pricklypoppy serve as important pieces in their ecosystem’s puzzle. They’ve evolved alongside native wildlife and contribute to the web of life that makes each place unique.

Even if you can’t grow this particular species, you can still support Hawaiian native plant conservation by:

  • Growing other Hawaiian natives that are more readily available
  • Supporting native plant societies and botanical gardens
  • Learning about and sharing information about rare native plants
  • Choosing native plants over non-native alternatives in your landscape

The Bigger Picture

The story of the smooth pricklypoppy reminds us that gardening with native plants isn’t just about what looks pretty in our yards – it’s about being stewards of our local ecosystems. Sometimes the most important thing we can do is simply appreciate these rare beauties from afar while supporting the conservation efforts that keep them alive for future generations.

While you might not be able to add this particular pricklypoppy to your garden, its story can inspire you to seek out and grow other native Hawaiian plants that are more readily available, helping you create a landscape that honors the unique natural heritage of the islands.

Smooth Pricklypoppy

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

Papaverales

Family

Papaveraceae Juss. - Poppy family

Genus

Argemone L. - pricklypoppy

Species

Argemone glauca (Nutt. ex Prain) Pope - smooth pricklypoppy

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