perennial

Hamer Pandora Throatwort

Trachelium caeruleum 'Hamer Pandora'

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

7, 8, 9

Water

Moderate

Humidity

Average

Lifespan

Tender perennial

Native To

Mediterranean region

Toxicity

Non-toxic to humans and pets

The Story

Plant Bio

Hamer Pandora is notable for its striking clusters of blue flowers and sturdy growth. This cultivar features larger flower heads compared to other varieties of Trachelium caeruleum.

Bloom Period:

EarlyLate

Uses & Benefits:

Vibrant blue flowers create striking garden displays and cut flower arrangements.

Attracts pollinators like bees and butterflies, enhancing garden ecology.

Supports local biodiversity and provides nectar for beneficial insects.

Marketplace

Where to Buy

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

Shipping costs Year-round shipping Free shipping

Planting

How to Grow

Tuck seeds into well-draining soil in early spring for best germination.
Mist cuttings regularly to maintain humidity and encourage root development.
Transplant seedlings when they are sturdy, usually after 6 weeks.
Fertilize monthly with a balanced liquid feed during the growing season.
Pinch back young plants to promote bushier growth and more blooms.
Deadhead spent flowers to extend flowering period.

Pro Tip

Use a well-draining soil mix and avoid overwatering to prevent root rot.

Keep It Thriving

Care Guide

Do

Water regularly, keeping soil moist but not waterlogged 🌱
Provide full sun for optimal flowering
Pinch back to encourage bushier growth
Apply balanced fertilizer monthly during active growth
Deadhead spent flowers to prolong bloom

Don't

Avoid overwatering, which can cause root rot ❌
Do not fertilize in late fall or winter
Refrain from overcrowding plants to ensure good air circulation
Avoid planting in heavy, poorly-draining soils

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Deadhead
Fertilize
Stake

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Vivid flower borderColorful container displayBright accent in perennial beds

Companion Plants

Salvia Coreopsis Gaillardia Echinacea Lavender

Multiply

Propagation Methods

Good to Know

Common Questions

Hamer Pandora Throatwort questions

What zones can Hamer Pandora Throatwort grow in?

Hamer Pandora Throatwort is hardy in USDA Zones 7–10. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Hamer Pandora Throatwort deer resistant?

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

When does Hamer Pandora Throatwort bloom?

Hamer Pandora Throatwort typically blooms in late summer through early fall. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Hamer Pandora Throatwort need full sun?

Hamer Pandora Throatwort does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.