Helianthus bolanderi
perennialN. America Native

Helianthus bolanderi

Bolander's Sunflower, Serpentine Sunflower

Not currently listed at our partner nurseries.

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Essentials

At a Glance

Plant Type

Perennial

Height

36 inches

Width

18 inches

Light

Full Sun

Zones

5, 6, 7, 8, 9

Water

Low

Humidity

Average

Lifespan

Annual

Native To

California, Oregon

Toxicity

Non-toxic

The Story

Plant Bio

Bolander's sunflower is an annual wildflower native to California and Oregon. It features hairy, branching stems and classic yellow, daisy-like flower heads with dark central disks. This species is notable for being a native wildflower in the western US, often thriving in dry, disturbed soils and attracting a variety of pollinators.

Uses & Benefits:

Ornamental UsesHelianthus bolanderi adds vibrant yellow color to native and wildflower gardens, attracting pollinators and providing visual interest.
Practical UsesIts robust roots help stabilize soil on slopes and prevent erosion.
Ecological BenefitsSupports native bee and butterfly populations, contributing to local biodiversity.

Marketplace

Where to Buy

We couldn't find this plant listed online right now.

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Planting

How to Grow

  1. Choose a sunny location with well-draining soil for planting.
  2. Tuck seeds 1 inch deep in soil after the last frost date, spacing 12-18 inches apart.
  3. Mist cuttings regularly to maintain humidity and promote rooting.
  4. Water consistently during dry periods, especially in the first growing season.
  5. Fertilize with a balanced fertilizer every 4-6 weeks during active growth.
  6. Mulch around plants to retain moisture and suppress weeds.

Pro Tip

Plant Helianthus bolanderi in full sun for optimal growth and flower production.

Keep It Thriving

Care Guide

Do

  • Water regularly to keep soil moist but not waterlogged 🌱
  • Deadhead spent blooms to encourage more flowers
  • Apply a balanced fertilizer monthly during the growing season
  • Provide support for tall stems in windy areas
  • Mulch to conserve moisture and regulate soil temperature

Don't

  • Avoid overwatering, which can cause root rot ❌
  • Don’t plant in heavy clay soil without amendments
  • Refrain from fertilizing late in the season to prevent legginess
  • Don’t prune in late fall or winter
  • Avoid planting in shady locations

Seasonal Care Calendar

TaskJanFebMarAprMayJunJulAugSepOctNovDec
Harvest
Plant
Propagate
Spring Cleanup

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Wildflower meadow with tall, vibrant stemsBright border with native plantsErosion control on slopes

Companion Plants

Amorpha canescens Echinacea purpurea Rudbeckia hirta Little bluestem grass Asclepias tuberosa

Multiply

Propagation Methods

Good to Know

Common Questions