perennial

Double Blue Geranium

Geranium pratense 'Plenum Violaceum'

The Story

Plant Bio

A clump-forming perennial with attractive lavender violet flowers and deep green foliage.

The 'Plenum Violaceum' cultivar features double flowers, providing additional visual interest compared to typical varieties.

Uses & Benefits:

Ornamental UsesGeranium pratense 'Plenum Violaceum' provides vibrant violet blooms that brighten shady and sunny garden spots, attracting pollinators and adding seasonal color.
Practical UsesIts dense foliage acts as ground cover, suppressing weeds and reducing soil erosion.
Ecological BenefitsAttracts bees and butterflies, supporting local pollinator populations.
SpeciesGeranium pratenseMeadow Cranesbill

Essentials

At a Glance

Plant Type

Perennial

Height

24 inches

Width

24 inches

Light

Full Sun, Partial Sun

Zones

4, 5, 6, 7, 8

Water

Moderate

Humidity

Average

Lifespan

Perennial

Native To

Europe and Asia

Toxicity

Non-toxic to humans and pets

Planting

How to Grow

  1. Tuck seeds into well-draining soil in early spring for best germination.
  2. Mist cuttings regularly to maintain moisture and promote rooting.
  3. Water deeply once a week during dry periods to encourage healthy growth.
  4. Feed with a balanced fertilizer every 4-6 weeks during the growing season.
  5. Prune back after flowering to maintain shape and promote new blooms.
  6. Divide clumps in early spring or fall for propagation and plant rejuvenation.

Pro Tip

Plant in a location with full sun to partial shade for optimal flowering and foliage color.

Keep It Thriving

Care Guide

Do

  • Water regularly to keep soil moist but not waterlogged 🌱
  • Apply mulch to retain soil moisture and suppress weeds
  • Prune dead or damaged stems promptly

Don't

  • Avoid overwatering, which can lead to root rot ❌
  • Do not fertilize late in the season to prevent weak growth
  • Refrain from planting in heavy, poorly-drained clay soil

Seasonal Care Calendar

TaskJanFebMarAprMayJunJulAugSepOctNovDec
Divide
Prune
Spring Cleanup

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Violet-colored border edgingShaded woodland garden accentWildflower meadow groundcover

Companion Plants

Multiply

Propagation Methods

Good to Know

Common Questions

Double Blue Geranium questions

What zones can Double Blue Geranium grow in?

Double Blue Geranium 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 Double Blue Geranium deer resistant?

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

When does Double Blue Geranium bloom?

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

Does Double Blue Geranium need full sun?

Double Blue Geranium does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.

Keep exploring

Grow Double Blue Geranium with confidence

See it in a design of your actual yard, get zone-matched care reminders, and track it season by season in your garden journal.