Eelgrass

Eelgrass (Nanozostera): What You Need to Know About This Aquatic Perennial

If you’ve stumbled across the name eelgrass in your gardening research, you might be wondering whether this aquatic plant belongs in your landscape. Let’s dive into what we know about Nanozostera, a lesser-known member of the eelgrass family that’s making its presence known along the Pacific Northwest coast.

The Basics: What Is Nanozostera?

Nanozostera is a perennial forb – essentially a non-woody plant that comes back year after year. Unlike the trees and shrubs that form the backbone of many gardens, this plant lacks significant woody tissue and keeps its growing points at or below ground level, making it well-adapted to aquatic environments.

While it shares the common name eelgrass with its more famous cousin Zostera, Nanozostera is its own distinct genus with some unique characteristics.

Where You’ll Find It

Currently, Nanozostera has established itself in the Pacific Northwest, specifically in British Columbia, Oregon, and Washington. This geographic distribution suggests the plant favors the temperate coastal conditions of this region.

Native Status: The Important Details

Here’s something crucial to know: Nanozostera is not native to North America. It’s what botanists call a naturalized species – meaning it was introduced from elsewhere but now reproduces on its own in the wild without human intervention. While it has established populations in both Canada and the United States, it originally came from somewhere else.

Should You Plant It?

This is where things get a bit tricky. Since Nanozostera isn’t listed as invasive or noxious, there’s no immediate red flag preventing you from growing it. However, as native plant enthusiasts, we generally encourage gardeners to consider native alternatives first.

The reality is that there’s limited information available about Nanozostera’s garden performance, care requirements, and ecological impact. This makes it challenging to provide specific growing advice or recommendations.

Consider Native Alternatives

If you’re interested in aquatic or wetland plants for your landscape, consider these native options instead:

• Native Zostera species (true native eelgrasses)
• Native sedges and rushes
• Regional native aquatic plants suitable for your specific location

What We Don’t Know

Unfortunately, detailed information about Nanozostera’s specific growing requirements, wildlife benefits, and garden applications is quite limited. We don’t have reliable data on:

• Specific care requirements
• USDA hardiness zones
• Wildlife and pollinator benefits
• Wetland indicator status
• Propagation methods

The Bottom Line

While Nanozostera might be an interesting addition to specialized aquatic gardens, the lack of comprehensive growing information makes it a bit of a gamble. Given its non-native status and our commitment to supporting local ecosystems, we’d recommend exploring native alternatives that can provide similar aesthetic appeal while supporting local wildlife.

If you’re specifically interested in eelgrass-type plants, connect with local native plant societies or wetland restoration groups – they’ll have the best recommendations for native species that thrive in your specific area and support local wildlife populations.

Remember, every plant choice is an opportunity to create habitat and support biodiversity. When in doubt, go native!