Species

Phlox paniculataGarden Phlox

65 other cultivars

perennialN. America Native

Japanese Phlox

Phlox paniculata 'Mt Fujiyama'

The Story

Plant Bio

Phlox paniculata 'Mt Fujiyama' is a perennial shrub known for its upright growth habit, lush green ovate leaves, and clusters of fragrant white flowers that bloom in summer, creating a striking display.

This cultivar is distinguished by its pure white flower clusters and robust, disease-resistant nature, making it an excellent choice for border planting and cut flower arrangements.

Uses & Benefits:

Provides fragrant, lush foliage and attractive white flowers that enhance garden aesthetics.

Drought tolerant once established, reduces need for frequent watering.

Attracts pollinators like bees and butterflies, supporting local biodiversity.

SpeciesPhlox paniculataGarden Phlox

Essentials

At a Glance

Plant Type

Perennial

Height

36 inches

Width

24 inches

Light

Full Sun, Partial Sun

Zones

4, 5, 6, 7, 8, 9

Water

Moderate

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 or divisions into well-drained soil in early spring
Water thoroughly after planting and keep soil moist
Pinch back stems in early summer for bushier growth
Mulch around base to retain moisture and suppress weeds
Fertilize with balanced fertilizer in spring and mid-summer
Divide clumps every 3–4 years in early spring or fall

Pro Tip

Plant in full sun for best flowering and ensure good drainage

Keep It Thriving

Care Guide

Do

Water regularly during dry spells 🌱
Prune after flowering to maintain shape
Mulch to conserve moisture and reduce weeds
Divide every 3–4 years for vigorous growth

Don't

Avoid overwatering to prevent root rot ❌
Don’t trim in late fall or winter
Steer clear of excessive fertilization which can reduce blooms
Don’t plant in poorly drained soil

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Deadhead
Divide
Pest Check
Prune

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Fragrant border with silvery foliagePollinator-friendly perennial bed

Companion Plants

Lavender Coreopsis Salvia EchinaceaRussian Sage

Multiply

Propagation Methods

Good to Know

Common Questions

Japanese Phlox questions

What zones can Japanese Phlox grow in?

Japanese 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 Japanese Phlox deer resistant?

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

When does Japanese Phlox bloom?

Japanese 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 Japanese Phlox need full sun?

Japanese Phlox does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.