North America Native Plant

California Tickseed

Botanical name: Coreopsis californica var. californica

USDA symbol: COCAC4

Life cycle: annual

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Leptosyne californica Nutt. (LECA17)   

California Tickseed: A Native Annual Wildflower for Golden State Gardens If you’re looking to add some authentic California charm to your garden, California tickseed (Coreopsis californica var. californica) might just be the native annual you’ve been searching for. This cheerful wildflower brings a touch of the Golden State’s natural beauty ...

California Tickseed: A Native Annual Wildflower for Golden State Gardens

If you’re looking to add some authentic California charm to your garden, California tickseed (Coreopsis californica var. californica) might just be the native annual you’ve been searching for. This cheerful wildflower brings a touch of the Golden State’s natural beauty right to your backyard, though it comes with a few quirks that make it quite the unique gardening adventure.

What Exactly Is California Tickseed?

California tickseed is a native annual forb that belongs to the sunflower family. As a forb, it’s essentially a non-woody flowering plant that completes its entire life cycle in just one growing season. Don’t let the word tickseed fool you – it gets this somewhat unfortunate name from its small, tick-like seeds, not because it attracts any unwanted pests to your garden!

You might also see this plant listed under its scientific synonym, Leptosyne californica, in some older gardening references, so don’t be confused if you come across that name during your research.

Where Does California Tickseed Call Home?

This native beauty is proudly Californian through and through. As a species native to the lower 48 states, it has evolved specifically to thrive in California’s unique climate and growing conditions. When you plant California tickseed, you’re essentially rolling out the red carpet for a plant that has been calling your region home for countless generations.

Why Consider California Tickseed for Your Garden?

There are several compelling reasons to give this native annual a try:

  • Native plant benefits: Supporting local ecosystems and wildlife that have co-evolved with this species
  • Annual lifecycle: Perfect for gardeners who enjoy changing up their landscape each year
  • Low-maintenance forb: Once established, most native annuals require minimal intervention
  • Authentic California character: Adds genuine local flavor to native plant gardens and naturalized landscapes

The Reality Check: What We Don’t Know

Here’s where things get a bit tricky – and honestly, quite mysterious. California tickseed is one of those native plants that seems to fly under the horticultural radar. Information about its specific growing requirements, wildlife benefits, and garden performance is surprisingly scarce. This could mean a few things: it might be quite rare in cultivation, possibly challenging to grow, or simply overlooked by the gardening community.

Garden Design Possibilities

As an annual forb, California tickseed would likely work best in:

  • Native plant gardens focused on California flora
  • Naturalized meadow or prairie-style plantings
  • Annual cutting gardens (if flowers are suitable)
  • Educational or demonstration gardens showcasing local species

Growing California Tickseed: Proceed with Curiosity

Since specific growing information for this variety is limited, you’ll need to channel your inner plant detective. Here are some general guidelines based on what we know about California natives and similar Coreopsis species:

  • Start with seeds: As an annual, this plant will need to be grown from seed each year
  • Think Mediterranean: Most California natives prefer well-draining soil and moderate water
  • Timing matters: Plant according to your local growing season for annuals
  • Give it space: Allow room for the plant to express its natural growth habit

The Bottom Line

California tickseed presents an intriguing opportunity for the adventurous native plant gardener. While it may not be the easiest or most well-documented choice, it offers the chance to grow something genuinely special – a plant that’s authentically Californian and potentially quite rare in cultivation.

If you’re someone who enjoys gardening challenges and supporting native plant diversity, this could be a rewarding addition to your garden. Just be prepared for some trial and error, and consider reaching out to local native plant societies or botanical gardens for additional growing tips specific to your area.

Remember, every native plant we successfully grow and share helps preserve California’s natural heritage for future generations – and that’s something worth celebrating, even if the journey requires a little extra patience and detective work!

California 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 californica (Nutt.) H. Sharsm. - California tickseed

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