North America Native Plant

Largeflower Tickseed

Botanical name: Coreopsis grandiflora var. grandiflora

USDA symbol: COGRG

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Coreopsis grandiflora Hogg ex Sweet var. pilosa Sherff (COGRP2)   

Largeflower Tickseed: A Cheerful Native Wildflower for Easy-Care Gardens If you’re looking for a native wildflower that brings sunshine to your garden while asking for very little in return, largeflower tickseed (Coreopsis grandiflora var. grandiflora) might just be your new best friend. This delightful perennial forb has been brightening up ...

Largeflower Tickseed: A Cheerful Native Wildflower for Easy-Care Gardens

If you’re looking for a native wildflower that brings sunshine to your garden while asking for very little in return, largeflower tickseed (Coreopsis grandiflora var. grandiflora) might just be your new best friend. This delightful perennial forb has been brightening up American landscapes long before European settlers arrived, and it’s ready to do the same for your garden today.

What Makes Largeflower Tickseed Special?

Largeflower tickseed is a true native American beauty, naturally occurring across the lower 48 states with established populations in Alabama, Arkansas, California, Florida, Georgia, Illinois, Louisiana, Mississippi, Missouri, Oklahoma, South Carolina, Texas, and Wisconsin. As its common name suggests, this plant produces larger flowers than many of its Coreopsis cousins, creating a more dramatic display in the garden.

This herbaceous perennial belongs to the forb family, meaning it’s a soft-stemmed flowering plant that dies back to the ground each winter and returns with fresh growth in spring. Don’t let its delicate appearance fool you though – largeflower tickseed is surprisingly tough and adaptable.

Garden Appeal and Design Uses

The star of the show is undoubtedly the bright yellow, daisy-like flowers that seem to glow in the landscape. These cheerful blooms feature the classic Coreopsis look with deeply notched petals that give them an almost fringed appearance. The flowers typically appear from late spring through fall, providing months of continuous color when many other plants are taking a break.

Largeflower tickseed works beautifully in several garden styles:

  • Native plant gardens and prairie restorations
  • Cottage gardens for a relaxed, naturalized look
  • Pollinator gardens where it serves as a beacon for beneficial insects
  • Xeriscaping and drought-tolerant landscapes
  • Wildflower meadows and naturalized areas

A Pollinator’s Paradise

One of the best reasons to grow largeflower tickseed is its value to local wildlife. The bright yellow flowers act like a open for business sign to bees, butterflies, and other beneficial insects. Native bees particularly appreciate the abundant nectar and pollen, while butterflies use the flowers as landing pads during their garden tours.

Growing Largeflower Tickseed Successfully

Here’s where largeflower tickseed really shines – it’s incredibly easy to grow! This native wildflower thrives in USDA hardiness zones 4-9, making it suitable for most of the continental United States.

Ideal Growing Conditions

Largeflower tickseed prefers:

  • Full sun exposure (6+ hours of direct sunlight daily)
  • Well-drained soils of various types
  • Average to lean soil fertility (too much fertilizer can actually reduce flowering)
  • Good air circulation around the plants

Once established, this tough native is quite drought tolerant, making it an excellent choice for low-maintenance gardens or areas where watering is challenging.

Planting and Care Tips

Getting largeflower tickseed established in your garden is straightforward:

  • Plant in spring after the last frost date in your area
  • Space plants 12-18 inches apart to allow for good air circulation
  • Water regularly during the first growing season to help establish roots
  • Deadhead spent flowers to encourage continued blooming throughout the season
  • Allow some flowers to go to seed if you want the plant to self-sow
  • Divide clumps every 2-3 years in early spring to maintain plant vigor
  • Cut back to ground level in late fall or early spring

Why Choose Native?

By choosing largeflower tickseed, you’re not just adding beauty to your garden – you’re supporting local ecosystems. Native plants like this one have co-evolved with local wildlife over thousands of years, creating intricate relationships that benefit both plants and animals. Plus, natives typically require less water, fertilizer, and pest control once established, making them an environmentally friendly choice.

The Bottom Line

Largeflower tickseed offers the perfect combination of beauty, ecological value, and low maintenance that every gardener dreams of. Whether you’re a weekend warrior looking for easy-care plants or a dedicated native plant enthusiast, this cheerful wildflower deserves a spot in your garden. With its bright yellow blooms, pollinator appeal, and tough-as-nails constitution, largeflower tickseed proves that sometimes the best things really do come in simple packages.

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