North America Non-native Plant

Osteospermum Sinuatum

Botanical name: Osteospermum sinuatum

USDA symbol: OSSI2

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

Osteospermum sinuatum: A Mystery Plant That May Not Exist If you’ve stumbled across the name Osteospermum sinuatum while researching plants for your garden, you’re probably scratching your head wondering why you can’t find much information about it. Well, there’s a good reason for that – this particular plant name appears ...

Osteospermum sinuatum: A Mystery Plant That May Not Exist

If you’ve stumbled across the name Osteospermum sinuatum while researching plants for your garden, you’re probably scratching your head wondering why you can’t find much information about it. Well, there’s a good reason for that – this particular plant name appears to be something of a botanical mystery.

The Case of the Missing Daisy

Osteospermum is a beloved genus of colorful South African daisies that gardeners adore for their cheerful blooms and easy-going nature. However, Osteospermum sinuatum doesn’t appear in any major botanical databases or plant references. This suggests that either the name is incorrect, outdated, or possibly refers to a plant that was misidentified.

What This Means for Your Garden

Since we can’t verify that Osteospermum sinuatum actually exists as a distinct species, we can’t provide specific growing advice or recommendations about whether you should plant it. If you encountered this name somewhere, it’s possible there was a typo or confusion with another plant.

Better Alternatives: Proven Osteospermum Species

Instead of chasing this elusive plant, consider these well-documented and readily available Osteospermum species that will actually thrive in your garden:

  • Osteospermum fruticosum – The classic African daisy with white petals and blue centers
  • Osteospermum ecklonis – Popular in cultivation with numerous colorful cultivars
  • Osteospermum jucundum – Compact growth with magenta flowers

Native Alternatives Worth Considering

If you’re interested in supporting native wildlife and ecosystems, consider these native daisy alternatives that offer similar cheerful blooms:

  • Regional native asters (Symphyotrichum species)
  • Black-eyed Susan (Rudbeckia species)
  • Blanket flower (Gaillardia species)
  • Purple coneflower (Echinacea species)

What to Do If You Have This Plant

If you believe you have a plant labeled as Osteospermum sinuatum, take some clear photos and consult with a local botanist, extension office, or experienced nursery professional. They can help you identify what you actually have and provide appropriate care instructions.

The Bottom Line

While botanical mysteries like Osteospermum sinuatum can be intriguing, it’s best to stick with plants that have been properly identified and documented. This ensures you can find reliable growing information and that you’re getting what you expect for your garden investment.

Remember, there are plenty of wonderful, well-documented plants out there waiting to brighten your garden – no detective work required!

Osteospermum Sinuatum

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

Asterales

Family

Asteraceae Bercht. & J. Presl - Aster family

Genus

Osteospermum L. - daisybush

Species

Osteospermum sinuatum (DC.) Norl. [excluded]

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