perennial

Garden Phlox Katherine

Phlox paniculata 'Katherine'

Not currently listed at our partner nurseries.

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Essentials

At a Glance

Plant Type

Perennial

Height

28 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

The Story

Plant Bio

Phlox paniculata is a deciduous perennial with bushy growth, featuring clusters of fragrant, tubular flowers and ovate green leaves that create a lush, colorful display in summer. This cultivar is renowned for its abundant, fragrant, lavender-blue flowers with white eyes and good mildew resistance.

Bloom Period:

EarlyLate

Uses & Benefits:

Provides vibrant, fragrant flowers that attract pollinators, enhancing garden biodiversity.

Deer-resistant and low-maintenance, ideal for low-effort perennials.

Supports pollinator populations and adds ecological value to garden habitats.

Marketplace

Where to Buy

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

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Planting

How to Grow

Tuck seeds or cuttings into moist soil in early spring.
Water regularly to keep soil evenly moist during the growing season.
Fertilize with a balanced fertilizer in spring and mid-summer.
Prune after flowering to encourage bushy growth.
Mulch around base to retain moisture and suppress weeds.
Divide clumps every 3–4 years in early spring for rejuvenation.

Pro Tip

Plant in well-drained soil with good air circulation for best blooms.

Keep It Thriving

Care Guide

Do

Water deeply during dry spells 🌱
Prune spent flowers to promote rebloom
Mulch to retain soil moisture

Don't

Overwater to avoid root rot ❌
Skip pruning after flowering
Plant in dense shade

Seasonal Care Calendar

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

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Colorful border with fragrant flowersPollinator-friendly garden accentDeer-resistant perennial bed

Companion Plants

Echinacea Coreopsis Salvia Lavender Yarrow

Multiply

Propagation Methods

Good to Know

Common Questions

Garden Phlox Katherine questions

What zones can Garden Phlox Katherine grow in?

Garden Phlox Katherine 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 Garden Phlox Katherine deer resistant?

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

When does Garden Phlox Katherine bloom?

Garden Phlox Katherine 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 Garden Phlox Katherine need full sun?

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