Species

Phlox paniculataGarden Phlox

65 other cultivars

perennialN. America Native

Flame Light Blue Garden Phlox

Phlox paniculata 'Flame Light Blue'

The Story

Plant Bio

Phlox paniculata, or garden phlox, is an upright herbaceous perennial prized for its large, fragrant flower panicles in summer. It features lance-shaped, green leaves and forms substantial clumps.

A compact cultivar in the 'Flame' series, 'Flame Light Blue' is noted for its good mildew resistance, sturdy stems, and large panicles of fragrant, light lavender-blue flowers with a small white eye. It has a long bloom period from mid to late summer.

Uses & Benefits:

Provides vibrant purple blooms mid-summer, attracts pollinators, and enhances cottage garden aesthetics.

Drought-tolerant once established, requires minimal watering and maintenance.

Supports bees and butterflies, resistant to deer and rabbits, promotes biodiversity.

SpeciesPhlox paniculataGarden Phlox

Essentials

At a Glance

Plant Type

Perennial

Height

20 inches

Width

18 inches

Light

Full Sun, Partial Sun

Zones

4, 5, 6, 7, 8, 9

Water

Moderate

Humidity

Moderate

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 or cuttings into well-draining soil in spring.
Water regularly until established, about 6 weeks.
Place in full sun for abundant blooms.
Fertilize lightly in early spring and mid-summer.
Prune after flowering to encourage bushy growth.
Mulch around plants to retain moisture and suppress weeds.

Pro Tip

Use well-draining loam soil and full sun for best blooms.

Keep It Thriving

Care Guide

Do

Water deeply during dry spells 🌱
Prune after flowering to shape and promote growth
Fertilize in early spring and mid-summer

Don't

Avoid overwatering, which can cause root rot ❌
Don’t cut back too late in the season
Avoid planting in overly shady areas

Seasonal Care Calendar

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

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Violet-scented borderPollinator-attracting garden bedColorful cottage garden feature

Companion Plants

Coreopsis Echinacea SalviaLavender Yarrow

Multiply

Propagation Methods

Good to Know

Common Questions

Flame Light Blue Garden Phlox questions

What zones can Flame Light Blue Garden Phlox grow in?

Flame Light Blue Garden Phlox 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 Flame Light Blue Garden Phlox deer resistant?

Not reliably. Deer may browse Flame Light Blue Garden Phlox, especially tender spring growth — plan on repellents or fencing where pressure is high.

When does Flame Light Blue Garden Phlox bloom?

Flame Light Blue Garden Phlox 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 Flame Light Blue Garden Phlox need full sun?

Flame Light Blue Garden Phlox does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.