North America Native Plant

Bolander’s Quillwort

Botanical name: Isoetes bolanderi

USDA symbol: ISBO

Life cycle: perennial

Habit: grass

Native status: Native to Canada âš˜ Native to the lower 48 states  

Synonyms: Isoetes bolanderi Engelm. var. pygmaea (Engelm.) Clute (ISBOP)  âš˜  Isoetes pygmaea Engelm. (ISPY2)   

Bolander’s Quillwort: A Living Fossil for Your Water Garden Meet Bolander’s quillwort (Isoetes bolanderi), one of nature’s most fascinating botanical time capsules! This unassuming aquatic plant might look like underwater grass at first glance, but it’s actually a living fossil that’s been quietly thriving in North American waters for millions ...

Rare plant alert!

Region: Conservation status by state

Status: S4TUQ: Status is uncertain but is somewhere between the following rankings: Uncertain taxonomy: ⚘ Apparently Secure: Uncommon but not rare, and usually widespread. Possibly cause for longterm concern. Typically more than 100 occurrences in the state or more than 10,000 individuals ⚘

Bolander’s Quillwort: A Living Fossil for Your Water Garden

Meet Bolander’s quillwort (Isoetes bolanderi), one of nature’s most fascinating botanical time capsules! This unassuming aquatic plant might look like underwater grass at first glance, but it’s actually a living fossil that’s been quietly thriving in North American waters for millions of years. If you’re looking to add something truly unique to your bog garden or natural pond, this little wonder might just be the conversation starter you never knew you needed.

What Exactly Is Bolander’s Quillwort?

Don’t let its grass-like appearance fool you – Bolander’s quillwort isn’t a grass at all! It belongs to an ancient group of plants called quillworts, which are more closely related to ferns than to any modern grasses. This perennial aquatic plant produces clusters of slender, quill-like leaves that emerge from an underground base, creating an elegant underwater forest in miniature.

Unlike flowering plants, Bolander’s quillwort reproduces through spores, making it a fascinating example of how plants survived and thrived long before flowers evolved. It’s like having a piece of prehistoric Earth right in your backyard water feature!

Where Does It Call Home?

This remarkable plant is native to western North America, with populations scattered across an impressive range of states including Alberta, Arizona, California, Colorado, Florida, Idaho, Montana, Nevada, New Mexico, Oregon, Utah, Washington, and Wyoming. It’s equally at home in Canada and the lower 48 states, showing remarkable adaptability across diverse climates and elevations.

Why Consider Bolander’s Quillwort for Your Garden?

Here’s where things get interesting – this isn’t your typical garden plant! Bolander’s quillwort is an obligate wetland species, meaning it almost always occurs in wetland environments. If you’re creating a bog garden, natural pond, or wetland restoration project, this native beauty offers several unique benefits:

  • Provides authentic native wetland character
  • Requires minimal maintenance once established
  • Adds subtle, grass-like texture to water features
  • Supports ecosystem biodiversity in wetland gardens
  • Creates habitat for aquatic invertebrates

Is It Right for Your Space?

Let’s be honest – Bolander’s quillwort isn’t for every garden! This specialized plant thrives in USDA hardiness zones 4-9, but only if you can provide the specific conditions it craves. It’s perfect for:

  • Bog gardens and wetland restorations
  • Natural pond edges and shallow water features
  • Native plant water gardens
  • Educational or demonstration gardens focusing on aquatic plants

However, if you’re looking for a typical border plant or something for dry garden beds, you’ll want to look elsewhere. This little guy is all about that wetland life!

Growing Conditions and Care

Success with Bolander’s quillwort is all about mimicking its natural wetland habitat:

  • Water requirements: Shallow standing water (2-6 inches deep) or consistently saturated soil
  • Light: Full sun to partial shade
  • Soil: Mucky, organic-rich wetland soils
  • Temperature: Cool to moderate temperatures preferred

The beauty of this plant lies in its low-maintenance nature. Once you’ve got the water conditions right, it pretty much takes care of itself. No deadheading, no fertilizing, no fussing – just the occasional check to ensure water levels remain consistent.

A Word of Caution About Sourcing

While Bolander’s quillwort has a relatively stable conservation status, it’s important to source any plants responsibly. Due to its specialized habitat requirements and the sensitivity of wetland ecosystems, always purchase from reputable native plant nurseries rather than collecting from the wild. This ensures you’re supporting conservation efforts while getting healthy, well-adapted plants for your garden.

The Bottom Line

Bolander’s quillwort isn’t going to be the star of your flower border, but for the right gardener with the right space, it’s absolutely magical. If you’re passionate about native plants, fascinated by botanical history, or working on a wetland garden project, this living fossil offers a unique opportunity to connect with millions of years of plant evolution – right in your own backyard water feature.

Just remember: wet feet required, no exceptions!

Bolander’s Quillwort

Classification

Group

Quillwort

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision
Division

Lycopodiophyta - Lycopods

Subdivision
Class

Lycopodiopsida

Subclass
Order

Isoetales

Family

Isoetaceae Dumort. - Quillwort family

Genus

Isoetes L. - quillwort

Species

Isoetes bolanderi Engelm. - Bolander's quillwort

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