Garden hybrid

Penstemon x hybridaPenstemon

8 other cultivars

perennial

Onyx and Pearls Beardtongue

Penstemon x hybrida 'Onyx And Pearls'

The Story

Plant Bio

Penstemon, or Beardtongue, are durable, drought-tolerant perennials prized for their tall spikes of tubular flowers that attract pollinators. They typically feature upright stems and lance-shaped leaves.

'Onyx and Pearls' is a striking cultivar featuring dark, near-black foliage that provides season-long color. In summer, it produces tall spikes of soft lavender flowers with white interiors, creating a dramatic contrast.

Uses & Benefits:

Penstemon x hybrida Onyx And Pearls adds vibrant color and texture to garden borders, attracting pollinators like bees and hummingbirds.

Its drought tolerance makes it an excellent choice for water-wise gardens and xeriscaping.

Supports local pollinator populations and enhances biodiversity.

SpeciesPenstemon x hybridaPenstemon

Essentials

At a Glance

Plant Type

Perennial

Height

42 inches

Width

36 inches

Light

Full Sun

Zones

4, 5, 6, 7, 8

Water

Low

Humidity

Average

Lifespan

Perennial

Native To

North America

Toxicity

Non-toxic

Bloom period

Mid-summer – Late summer

In flower about 2 months of the year

Planting

How to Grow

Tuck seeds into well-draining soil in early spring for best germination.
Mist cuttings regularly to maintain humidity during rooting process.
Transplant seedlings when they are sturdy and have developed several leaves.
Water deeply once a week during dry periods to promote healthy growth.
Apply a balanced fertilizer in early spring to encourage blooming.
Prune dead or damaged stems after flowering to maintain shape.

Pro Tip

Ensure excellent drainage to prevent root rot and promote vibrant blooms.

Keep It Thriving

Care Guide

Do

Provide full sun for optimal flowering 🌞
Water moderately, avoiding waterlogging 💧
Prune after flowering to shape the plant
Use organic compost to enrich soil

Don't

Avoid overwatering, which can cause root rot ❌
Don't neglect pruning, as it encourages bushier growth
Refrain from planting in heavy, waterlogged clay soils
Do not fertilize late in the season to prevent weak, leggy growth

Seasonal Care Calendar

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

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Colorful border plant with striking foliageDrought-tolerant rock garden accentWildflower meadow addition

Companion Plants

Salvia EchinaceaLavender Coreopsis Gaillardia

Multiply

Propagation Methods

Good to Know

Common Questions

Onyx and Pearls Beardtongue questions

What zones can Onyx and Pearls Beardtongue grow in?

Onyx and Pearls Beardtongue 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 Onyx and Pearls Beardtongue deer resistant?

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

When does Onyx and Pearls Beardtongue bloom?

Onyx and Pearls Beardtongue 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 Onyx and Pearls Beardtongue need full sun?

Onyx and Pearls Beardtongue does best in full sun (6+ hours).

Is Onyx and Pearls Beardtongue drought tolerant?

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