Penstemon x gloxinioides 'Scarlet Queen'

Species

4 other cultivars

perennial

Scarlet Queen Penstemon

Penstemon x gloxinioides 'Scarlet Queen'

The Story

Plant Bio

Penstemon gloxinioides, known as Scarlet Queen, is a perennial shrub with upright growth, featuring elongated, lance-shaped leaves and vibrant, trumpet-shaped scarlet flowers that attract pollinators.

This cultivar is distinguished by its intense scarlet flower color and its ability to thrive in well-drained soils, making it a striking addition to sunny garden borders.

Uses & Benefits:

Bright scarlet flowers add vibrant color to garden borders, attracting pollinators and enhancing visual appeal.

Drought-tolerant and low-maintenance, ideal for water-wise gardens.

Supports bees and hummingbirds, promoting local biodiversity.

Essentials

At a Glance

Plant Type

Perennial

Height

30 inches

Width

12 inches

Light

Full Sun, Partial Sun

Zones

6, 7, 8, 9

Water

Moderate once established, drought-tolerant

Humidity

Prefers dry to moderate conditions

Lifespan

Short-lived perennial

Native To

North America

Toxicity

Non-toxic

Planting

How to Grow

Tuck seeds into well-draining soil in early spring.
Water regularly until established, then drought-tolerant.
Provide full sun for optimal flowering.
Fertilize lightly in spring with a balanced fertilizer.
Prune dead flowers to encourage reblooming.
Mulch to retain moisture and suppress weeds.

Pro Tip

Ensure excellent drainage to prevent root rot and promote healthy growth.

Keep It Thriving

Care Guide

Do

Water deeply during dry spells 🌱
Prune after flowering to maintain shape
Apply a balanced fertilizer annually

Don't

Overwater to avoid root rot ❌
Plant in heavy clay soil without amendment ❌
Neglect pruning after bloom ❌

Seasonal Care Calendar

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

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Vivid border with tubular scarlet flowersDrought-tolerant perennial accentPollinator-friendly garden feature

Companion Plants

Lavender Yarrow Salvia Echinacea Coreopsis

Multiply

Propagation Methods

Good to Know

Common Questions

Scarlet Queen Penstemon questions

What zones can Scarlet Queen Penstemon grow in?

Scarlet Queen Penstemon is hardy in USDA Zones 6–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Scarlet Queen Penstemon deer resistant?

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

When does Scarlet Queen Penstemon bloom?

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

Does Scarlet Queen Penstemon need full sun?

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

Is Scarlet Queen Penstemon drought tolerant?

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