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North America Native Plant

Tubular Bluestar

Tubular Bluestar: A Lesser-Known Native Gem for Southwestern Gardens If you’re searching for native plants that can thrive in the challenging conditions of the American Southwest, you might want to get acquainted with tubular bluestar (Amsonia longiflora var. salpignantha). This perennial wildflower is one of those under-the-radar natives that deserves ...

Tubular Bluestar: A Lesser-Known Native Gem for Southwestern Gardens

If you’re searching for native plants that can thrive in the challenging conditions of the American Southwest, you might want to get acquainted with tubular bluestar (Amsonia longiflora var. salpignantha). This perennial wildflower is one of those under-the-radar natives that deserves more attention from gardeners looking to create sustainable, regionally appropriate landscapes.

What Makes Tubular Bluestar Special?

Tubular bluestar belongs to the dogbane family and is classified as a forb—essentially a flowering plant that stays herbaceous rather than developing woody stems. As a perennial, it returns year after year, making it a reliable addition to your garden once established. You might also encounter this plant listed under its botanical synonym, Amsonia salpignantha Woodson, in older gardening references.

Where Does It Call Home?

This native beauty has a relatively limited natural range, calling just two states home: New Mexico and Texas. Its restricted distribution makes it a special choice for gardeners in these areas who want to showcase truly local flora in their landscapes.

Why Consider Growing Tubular Bluestar?

There are several compelling reasons to include this native in your garden:

  • Native credentials: As a true native to the southwestern United States, it’s naturally adapted to local climate conditions and soil types
  • Low-maintenance appeal: Like most native plants, it typically requires less water and fertilizer than non-native alternatives once established
  • Wildlife-friendly: Native plants generally provide better habitat and food sources for local wildlife compared to exotic species
  • Unique regional character: Its limited range makes it a conversation starter and a way to showcase your area’s distinctive plant heritage

The Growing Challenge

Here’s where things get a bit tricky: tubular bluestar is something of a mystery plant when it comes to detailed growing information. Unlike more common native plants, specific cultivation details for this particular variety are scarce in gardening literature. This scarcity could mean a few things—it might be relatively rare in cultivation, challenging to grow, or simply overlooked by the gardening community.

What We Do Know About Growing It

While specific growing requirements for tubular bluestar remain somewhat elusive, we can make some educated assumptions based on its native habitat and family characteristics:

  • Climate adaptation: Being native to New Mexico and Texas, it’s likely adapted to hot, dry conditions with intense sun
  • Soil preferences: Probably tolerates a range of soil types, potentially including alkaline or rocky soils common in its native range
  • Water needs: As a southwestern native, it’s likely drought-tolerant once established
  • Hardiness: Should be hardy in USDA zones typical for its native range

A Word of Caution for Gardeners

If you’re determined to grow tubular bluestar, be prepared for a bit of detective work. You’ll likely need to:

  • Source seeds or plants from specialized native plant nurseries
  • Experiment with growing conditions based on general Amsonia care guidelines
  • Connect with local native plant societies or botanical gardens for region-specific advice
  • Be patient, as native plants often establish slowly but reward you with long-term resilience

The Bottom Line

Tubular bluestar represents both an opportunity and a challenge for native plant gardeners in the Southwest. While its native status and regional specificity make it an appealing choice for creating authentic local landscapes, the limited cultivation information means you’ll be somewhat pioneering if you choose to grow it. For gardeners who enjoy experimenting with lesser-known natives and contributing to the preservation of regional plant heritage, tubular bluestar could be a rewarding project. Just be prepared to do some research and possibly some trial-and-error along the way.

If you’re new to native gardening or prefer plants with well-established growing guidelines, you might want to start with more commonly cultivated southwestern natives and work your way up to botanical mysteries like tubular bluestar. Either way, every native plant you add to your garden is a step toward creating more sustainable and wildlife-friendly landscapes.

Tubular Bluestar

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

Gentianales

Family

Apocynaceae Juss. - Dogbane family

Genus

Amsonia Walter - bluestar

Species

Amsonia longiflora Torr. - tubular bluestar

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