North America Native Plant

Schweinitz’s Sunflower

Botanical name: Helianthus schweinitzii

USDA symbol: HESC3

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Schweinitz’s Sunflower: A Rare Native Beauty Worth Protecting Meet Schweinitz’s sunflower (Helianthus schweinitzii), a botanical treasure that’s as rare as it is beautiful. This stunning native perennial sunflower is one of those special plants that makes you feel like you’re part of something bigger – a conservation effort that started ...

Rare plant alert!

Region: United States

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 ⚘ Endangered: In danger of extinction throughout all or a significant portion of its range. ⚘

Region: United States

Schweinitz’s Sunflower: A Rare Native Beauty Worth Protecting

Meet Schweinitz’s sunflower (Helianthus schweinitzii), a botanical treasure that’s as rare as it is beautiful. This stunning native perennial sunflower is one of those special plants that makes you feel like you’re part of something bigger – a conservation effort that started right in your own backyard.

What Makes This Sunflower So Special?

Schweinitz’s sunflower isn’t your typical roadside sunflower. This impressive perennial forb can tower anywhere from 3 to 10 feet tall, creating a dramatic statement in late summer and fall when its cheerful yellow blooms burst into action. The classic daisy-like flowers feature bright yellow petals radiating around dark chocolate centers – it’s like nature’s own version of a sunny-side-up egg, but way more elegant.

What really sets this sunflower apart is its incredible rarity. With a Global Conservation Status of S3 (Vulnerable) and listed as Endangered in the United States, this plant is fighting for survival. There are typically only 21 to 100 occurrences worldwide, with an estimated 3,000 to 10,000 individual plants remaining.

Where Does It Call Home?

This native beauty has a pretty exclusive address – you’ll only find Schweinitz’s sunflower naturally growing in North Carolina and South Carolina. It’s what we call an endemic species, meaning it evolved in this specific region and nowhere else on Earth. Talk about local pride!

Should You Grow Schweinitz’s Sunflower?

Here’s where things get both exciting and important. If you live in USDA hardiness zones 6-8 and you’re passionate about native plants and conservation, this could be an incredible addition to your garden. However – and this is a big however – you absolutely must source your plants responsibly.

Only purchase Schweinitz’s sunflower from reputable native plant nurseries that propagate their own plants from ethically collected seeds. Never dig plants from the wild or buy from sources that can’t verify their propagation methods. Every plant matters when we’re talking about an endangered species.

Perfect Spots for This Rare Beauty

Schweinitz’s sunflower thrives in:

  • Native plant gardens focused on regional species
  • Prairie or meadow-style landscapes
  • Pollinator gardens (the bees and butterflies will thank you!)
  • Conservation gardens dedicated to rare species
  • Naturalized areas where it can spread gradually

Growing Conditions That Make It Happy

The good news is that once you’ve sourced your plant responsibly, Schweinitz’s sunflower isn’t particularly fussy. This tough native appreciates:

  • Full sun: At least 6 hours of direct sunlight daily
  • Well-drained soil: It’s quite drought tolerant once established
  • Room to grow: Give it space – this isn’t a shrinking violet
  • Minimal fuss: Native plants evolved to thrive without constant pampering

Planting and Care Tips

Spring is your best bet for planting. Here’s how to give your Schweinitz’s sunflower the best start:

  • Plant after the last frost when soil has warmed
  • Dig a hole twice as wide as the root ball
  • Water regularly the first year to help establish deep roots
  • Consider staking taller specimens in windy locations
  • Let it go to seed – those seeds feed birds and can create new plants
  • Cut back in late winter before new growth begins

The Wildlife Connection

When you plant Schweinitz’s sunflower, you’re not just growing a pretty flower – you’re creating habitat. This native beauty supports local ecosystems by providing nectar for native bees and butterflies, while its seeds offer food for birds. It’s like opening a neighborhood diner for wildlife.

A Plant Worth Protecting

Growing Schweinitz’s sunflower is more than gardening – it’s conservation in action. Every responsibly grown plant helps ensure this rare beauty has a future. Just remember, with great plants comes great responsibility. Source ethically, grow with care, and maybe even collect seeds to share with other conservation-minded gardeners.

In a world where we’re losing biodiversity at an alarming rate, choosing to grow rare native species like Schweinitz’s sunflower is a small but meaningful way to push back against extinction. Plus, you’ll have one heck of a conversation starter in your garden!

Schweinitz’s Sunflower

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

Helianthus L. - sunflower

Species

Helianthus schweinitzii Torr. & A. Gray - Schweinitz's sunflower

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