North America Non-native Plant

Dropseed

Botanical name: Sporobolus microspermus

USDA symbol: SPMI10

Habit: grass

Native status: Not native but doesn't reproduce and persist in the wild

Synonyms: Sporobolus microspermum (Lag.) Hitchc., orth. var. (SPMI15)   

Dropseed: The Understated Native Grass Worth Getting to Know If you’ve ever wondered about those subtle, fine-textured grasses that seem to dance in the breeze, you might have encountered a dropseed. Sporobolus microspermus, commonly known as dropseed, is one of those quietly elegant native grasses that doesn’t shout for attention ...

Dropseed: The Understated Native Grass Worth Getting to Know

If you’ve ever wondered about those subtle, fine-textured grasses that seem to dance in the breeze, you might have encountered a dropseed. Sporobolus microspermus, commonly known as dropseed, is one of those quietly elegant native grasses that doesn’t shout for attention but definitely deserves a spot in the conversation about native landscaping.

What Makes Dropseed Special?

Dropseed belongs to the Sporobolus genus, a group of grasses known for their delicate appearance and hardy nature. The name dropseed itself gives you a hint about one of this plant’s most interesting characteristics – the way its tiny seeds seem to drop or fall from the plant when mature. It’s like nature’s own little confetti celebration!

As a member of the grass family (Poaceae), this species shares the classic grass-like appearance we’re all familiar with, but with its own unique personality. You might also see it referenced by its synonym, Sporobolus microspermum, in older botanical references.

The Mystery of Limited Information

Here’s where things get a bit interesting – and honestly, a little mysterious. While we know that Sporobolus microspermus exists and is classified as a dropseed, detailed information about this specific species is surprisingly scarce in readily available sources. This could mean a few things: it might be a less common species, it could be regionally specific, or it might be one of those plants that simply hasn’t gotten the botanical spotlight it deserves.

Geographic Distribution

Unfortunately, specific distribution information for Sporobolus microspermus isn’t readily available in current databases. This lack of detailed geographic data makes it challenging to provide definitive growing recommendations.

Should You Plant It?

Given the limited information available about this specific species, here’s my honest gardener-to-gardener advice: proceed with caution and do your homework first. Here’s what you should consider:

  • Contact your local native plant society or extension office to learn more about this species in your area
  • Verify that it’s actually native to your region before planting
  • Check with local botanical experts who might have more detailed knowledge about regional Sporobolus species
  • Consider well-documented native alternatives from the same genus if you’re drawn to the dropseed family

General Growing Wisdom for Dropseed Species

While I can’t give you specific care instructions for Sporobolus microspermus, I can share some general wisdom about growing dropseed species that might be helpful:

  • Most dropseeds prefer full sun and well-draining soil
  • They’re typically drought-tolerant once established
  • These grasses often work well in naturalized landscapes and prairie-style gardens
  • They usually provide good wildlife value, offering seeds for birds and cover for small wildlife

The Bottom Line

Sporobolus microspermus represents one of those intriguing gaps in our readily available plant knowledge. While the broader dropseed family offers many wonderful options for native landscaping, this particular species needs more research before I can wholeheartedly recommend it for your garden.

If you’re interested in incorporating native grasses into your landscape, I’d suggest exploring other well-documented Sporobolus species that are confirmed native to your area. Your local native plant experts can point you toward the best dropseed options for your specific location and growing conditions.

Sometimes the most honest gardening advice is admitting when we need to learn more – and this is definitely one of those times!

Dropseed

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

Sporobolus R. Br. - dropseed

Species

Sporobolus microspermus (Lag.) Hitchc. - dropseed

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