perennial

Penstemon Red Rocks

Penstemon x hybrida 'Red Rocks'

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Essentials

At a Glance

Plant Type

Perennial

Height

21 inches

Width

15 inches

Light

Full Sun, Partial Sun

Zones

4, 5, 6, 7, 8, 9

Water

Moderate

Humidity

Average

Lifespan

Perennial

Native To

North America

Toxicity

Non-toxic

The Story

Plant Bio

Penstemon x hybrida 'Red Rocks' is a perennial shrub with upright stems and tubular, vibrant red flowers that attract hummingbirds, set against narrow, green foliage with a bushy growth habit. This cultivar is distinguished by its striking red blooms that provide a bold splash of color in garden borders and rock gardens, thriving in well-drained soils with full sun exposure.

Uses & Benefits:

Bright red tubular flowers add vibrant color to gardens and attract hummingbirds.

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

Supports pollinators like bees and hummingbirds, promoting biodiversity.

Marketplace

Where to Buy

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Planting

How to Grow

Tuck seeds into moist soil in early spring.
Water regularly until established, about 6 weeks.
Place in full sun for optimal flowering.
Divide clumps every 2-3 years in early spring.
Apply mulch to retain moisture and suppress weeds.
Prune after flowering to encourage bushy growth.

Pro Tip

Ensure well-drained soil and full sun for best blooms.

Keep It Thriving

Care Guide

Do

Water deeply during dry periods 🌱
Prune back after flowering
Mulch to conserve moisture

Don't

Overwater to prevent root rot ❌
Avoid heavy shade
Don’t neglect pruning

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Deadhead
Divide
Prune

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Colorful border with tubular red flowersDrought-tolerant rock gardenWildflower meadow edge

Companion Plants

Lavender Coreopsis Echinacea Salvia Gaillardia

Multiply

Propagation Methods

Good to Know

Common Questions

Penstemon Red Rocks questions

What zones can Penstemon Red Rocks grow in?

Penstemon Red Rocks is hardy in USDA Zones 4–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Penstemon Red Rocks deer resistant?

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

When does Penstemon Red Rocks bloom?

Penstemon Red Rocks typically blooms in late spring to summer through late summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Penstemon Red Rocks need full sun?

Penstemon Red Rocks does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.

Is Penstemon Red Rocks drought tolerant?

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