North America Native Plant

Largeflower Tickseed

Botanical name: Coreopsis grandiflora var. harveyana

USDA symbol: COGRH

Life cycle: perennial

Habit: forb

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

Synonyms: Coreopsis heterolepis Sherff (COHE8)   

Largeflower Tickseed: A Cheerful Perennial for Your Garden If you’re looking for a reliable perennial that brings sunny disposition to your landscape, largeflower tickseed (Coreopsis grandiflora var. harveyana) might just be the cheerful companion your garden needs. This herbaceous perennial belongs to the beloved Coreopsis family, known for their daisy-like ...

Largeflower Tickseed: A Cheerful Perennial for Your Garden

If you’re looking for a reliable perennial that brings sunny disposition to your landscape, largeflower tickseed (Coreopsis grandiflora var. harveyana) might just be the cheerful companion your garden needs. This herbaceous perennial belongs to the beloved Coreopsis family, known for their daisy-like blooms and easy-going nature.

What Makes This Plant Special?

Largeflower tickseed is a forb—essentially a flowering plant without woody stems—that comes back year after year to brighten your garden beds. As a variety of the popular Coreopsis grandiflora, it shares many of the traits that make tickseeds such garden favorites, including their reputation for being relatively low-maintenance and long-blooming.

Where Does It Come From?

This variety has an interesting geographic story. While it’s native to the lower 48 United States, it has also established itself as a non-native species in parts of Canada, where it reproduces on its own and persists in the wild. You’ll find it growing across a impressive range of states, from Alabama and Arkansas in the south, to Maine and Vermont in the northeast, and as far west as New Mexico and Texas. It’s also made its home in Ontario and Quebec.

Garden Design Possibilities

As a perennial forb, largeflower tickseed offers several advantages for garden design:

  • Provides consistent yearly structure as a returning perennial
  • Offers the fine texture typical of herbaceous plants
  • Works well in informal, naturalistic plantings
  • Can complement both native and non-native garden schemes

Growing Considerations

While specific growing requirements for this particular variety aren’t well-documented, most Coreopsis species are known for being adaptable and relatively easy to grow. They typically prefer:

  • Full sun to partial sun conditions
  • Well-draining soil
  • Regular watering, though many are drought-tolerant once established

Since this is a perennial, you can expect it to die back in winter and return each spring with fresh growth.

A Note for Gardeners

If you’re gardening in areas where this plant isn’t native (such as parts of Canada), you might want to consider native alternatives that provide similar garden benefits while supporting local ecosystems. However, since this variety isn’t listed as invasive or problematic, it can be a reasonable choice for gardeners who appreciate its qualities.

The Bottom Line

Largeflower tickseed represents the dependable charm that makes Coreopsis such a popular genus. While we’d love to share more specific details about this particular variety’s exact height, spread, and care requirements, its inclusion in the broader Coreopsis family suggests it likely shares many of the positive traits that make these plants garden workhorses. If you’re drawn to sunny, daisy-like flowers and appreciate plants that return faithfully each year, this perennial forb might deserve a spot in your landscape.

As with any plant selection, consider your local growing conditions and whether choosing native species might better serve your garden goals and local wildlife.

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