perennial

Deam's Coneflower

Rudbeckia deamii

Not currently listed at our partner nurseries.

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Essentials

At a Glance

Plant Type

Perennial

Height

30 inches

Width

18 inches

Light

Full Sun, Partial Sun

Zones

4, 5, 6, 7, 8

Water

Moderate, drought tolerant once established

Humidity

Prefers moderate humidity

Lifespan

Perennial

Native To

Central United States

Toxicity

Non-toxic

The Story

Plant Bio

Rudbeckia deamii, commonly known as Deam's Coneflower, is a hardy perennial with upright clumps of dark green, lance-shaped leaves and bright yellow daisy-like flowers featuring prominent central cones. This species is valued for its long-lasting summer blooms and excellent resistance to drought and heat, making it ideal for low-maintenance perennial borders and wildlife gardens.

Bloom Period:

EarlyLate

Uses & Benefits:

Bright, daisy-like flowers add cheerful color to gardens, attracting pollinators.

Drought tolerant and low-maintenance, ideal for sustainable landscapes.

Supports bees and butterflies, enriching local biodiversity.

Marketplace

Where to Buy

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

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Planting

How to Grow

Tuck seeds into prepared soil in early spring.
Water regularly until seedlings establish.
Thin seedlings to proper spacing after germination.
Mulch around plants to retain moisture and suppress weeds.
Fertilize lightly in spring with a balanced fertilizer.
Deadhead spent flowers to promote continuous blooming.

Pro Tip

Plant in well-drained soil in full sun for best flowering.

Keep It Thriving

Care Guide

Do

Water deeply during dry spells 🌱
Prune back in late fall after flowering
Fertilize annually with compost or balanced fertilizer

Don't

Avoid overwatering to prevent root rot ❌
Do not disturb roots during the growing season
Skip heavy fertilization that can promote foliage over flowers

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Divide
Mulch
Plant
Spring Cleanup

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Bright perennial borderPollinator-friendly gardenDrought-tolerant planting bed

Companion Plants

Echinacea purpurea Coreopsis tinctoria Lavandula angustifolia Rudbeckia hirta Sedum spp.

Multiply

Propagation Methods

Good to Know

Common Questions

Deam's Coneflower questions

What zones can Deam's Coneflower grow in?

Deam's Coneflower is hardy in USDA Zones 4–8. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Deam's Coneflower deer resistant?

Yes — Deam's Coneflower is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.

When does Deam's Coneflower bloom?

Deam's Coneflower typically blooms in mid-summer through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Deam's Coneflower need full sun?

Deam's Coneflower does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.

Is Deam's Coneflower drought tolerant?

Yes — once established (usually after the first full season), Deam's Coneflower handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.