North America Non-native Plant

Spring Milletgrass

Botanical name: Milium vernale

USDA symbol: MIVE3

Life cycle: annual

Habit: grass

Native status: Non-native, reproduces and persists in the wild in the lower 48 states  

Spring Milletgrass: A Little-Known Annual Grass If you’ve stumbled across the name spring milletgrass in your plant research, you might be wondering what exactly this grass is all about. Scientifically known as Milium vernale, this annual grass is part of the diverse Poaceae family, but it’s not exactly what you’d ...

Spring Milletgrass: A Little-Known Annual Grass

If you’ve stumbled across the name spring milletgrass in your plant research, you might be wondering what exactly this grass is all about. Scientifically known as Milium vernale, this annual grass is part of the diverse Poaceae family, but it’s not exactly what you’d call a garden superstar.

What Is Spring Milletgrass?

Spring milletgrass is an annual grass that belongs to the broader milletgrass genus. Like other grasses in its family, it has that characteristic grass-like appearance you’d expect, but beyond that, this particular species keeps a pretty low profile in the plant world.

Where Does It Grow?

In the United States, Milium vernale has been documented in Idaho, where it grows as a non-native species that has established itself in the wild. As an introduced plant, it reproduces on its own without human intervention and has managed to persist in the landscape.

Should You Plant Spring Milletgrass?

Here’s where things get a bit tricky. While spring milletgrass isn’t listed as invasive or noxious, there’s surprisingly little information available about its garden performance, growing requirements, or ecological benefits. For most gardeners, this lack of documentation makes it a bit of a gamble.

Since this is a non-native annual grass with limited ornamental value and unclear ecological benefits, you might want to consider some well-documented native alternatives instead. Native grasses offer several advantages:

  • Better support for local wildlife and pollinators
  • Established growing information and care guidelines
  • Adaptation to local climate conditions
  • Contribution to regional ecosystem health

Native Grass Alternatives to Consider

If you’re interested in adding annual or short-lived grasses to your landscape, consider researching native options in your area. Your local extension office or native plant society can provide recommendations for grasses that will thrive in your specific region while supporting local ecosystems.

The Bottom Line

Spring milletgrass falls into that category of plants that exist in the botanical world but don’t have much of a gardening following. While it’s not considered harmful, the lack of available information about its growing requirements, ornamental value, and ecological impact makes it less than ideal for most garden situations.

If you’re passionate about grasses and want to experiment with lesser-known species, just remember that native alternatives will likely give you better results and provide more benefits to your local environment. Sometimes the best gardening advice is knowing when to look elsewhere!

Spring Milletgrass

Classification

Group

Monocot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Liliopsida - Monocotyledons

Subclass

Commelinidae

Order

Cyperales

Family

Poaceae Barnhart - Grass family

Genus

Milium L. - milletgrass

Species

Milium vernale M. Bieb. - spring milletgrass

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