North America Native Plant

Largeflower Tickseed

Botanical name: Coreopsis grandiflora var. saxicola

USDA symbol: COGRS

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Coreopsis saxicola Alexander (COSA5)  âš˜  Coreopsis saxicola Alexander var. duncanii Sherff (COSAD)   

Largeflower Tickseed: A Rare Southeastern Native Worth Discovering Meet largeflower tickseed (Coreopsis grandiflora var. saxicola), a charming native perennial that’s flying under the radar in many gardening circles. This herbaceous wildflower might not be a household name, but it deserves a spot on every native plant enthusiast’s wishlist – especially ...

Rare plant alert!

Region: Arkansas

Status: S3: Status is uncertain but is somewhere between the following rankings: Vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals ⚘

Largeflower Tickseed: A Rare Southeastern Native Worth Discovering

Meet largeflower tickseed (Coreopsis grandiflora var. saxicola), a charming native perennial that’s flying under the radar in many gardening circles. This herbaceous wildflower might not be a household name, but it deserves a spot on every native plant enthusiast’s wishlist – especially if you’re gardening in the Deep South.

Where You’ll Find This Southern Belle

Largeflower tickseed calls the southeastern United States home, with populations naturally occurring in Alabama, Arkansas, Georgia, and Mississippi. This variety has adapted to the unique growing conditions of this region, making it perfectly suited for gardens within its native range.

A Word About Rarity

Here’s something important to know: this particular variety of Coreopsis is considered rare, with an S3 conservation status in Arkansas. This means it’s uncommon and could be vulnerable to decline. If you’re interested in growing largeflower tickseed, please make sure you source your plants or seeds from reputable native plant nurseries that practice responsible propagation methods.

What Makes This Plant Special

As a native perennial forb, largeflower tickseed brings authentic regional character to your landscape. Unlike woody shrubs or trees, this herbaceous plant dies back to the ground each winter and returns fresh each spring – a reliable performer that won’t take over your garden but will provide consistent beauty year after year.

The plant is also known by its scientific synonyms Coreopsis saxicola Alexander and Coreopsis saxicola Alexander var. duncanii Sherff, so you might see it listed under these names in botanical references.

Why Choose Native Plants Like Largeflower Tickseed

Native plants are like the perfect house guests – they know exactly what to expect from your local climate and soil conditions because they’ve been thriving there for thousands of years. When you choose largeflower tickseed for your garden, you’re:

  • Supporting local wildlife that has evolved alongside these plants
  • Reducing maintenance needs since the plant is naturally adapted to your area
  • Helping preserve regional biodiversity
  • Creating a landscape that truly reflects your local ecosystem

Garden Design Ideas

Largeflower tickseed works beautifully in naturalized areas, wildflower meadows, and native plant gardens. As a forb, it adds texture and seasonal interest without competing with larger woody plants. Consider pairing it with other native southeastern perennials for a authentic regional display that changes beautifully throughout the growing season.

Growing Tips and Care

While specific growing requirements for this variety are not well-documented, members of the Coreopsis family are generally easy-going plants. As a southeastern native, largeflower tickseed likely prefers:

  • Well-draining soil (most Coreopsis varieties don’t like wet feet)
  • Full sun to partial shade
  • Moderate water once established
  • Minimal fertilization (native plants often prefer lean soils)

Since this is a perennial, be patient in the first year as it establishes its root system. The old gardening saying first year it sleeps, second year it creeps, third year it leaps often applies to native perennials.

A Responsible Choice

By choosing to grow largeflower tickseed, you’re making a conservation-minded decision that supports native biodiversity. Just remember to source your plants responsibly – look for nurseries that specialize in native plants and can verify their propagation methods. Avoid collecting from wild populations, as this can further stress already uncommon varieties.

If you can’t find largeflower tickseed at local nurseries, consider reaching out to native plant societies in Alabama, Arkansas, Georgia, or Mississippi. These organizations often have seed exchanges or can connect you with specialty growers who work with rare native varieties.

The Bottom Line

Largeflower tickseed may be uncommon, but that’s exactly what makes it special. For gardeners in the southeastern United States looking to create authentic native landscapes, this charming perennial offers a chance to grow something truly regional while supporting conservation efforts. It’s a plant that connects your garden to the natural heritage of the Deep South – and that’s pretty special indeed.

Largeflower Tickseed

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

Coreopsis L. - tickseed

Species

Coreopsis grandiflora Hogg ex Sweet - largeflower tickseed

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