Species

Phlox paniculataGarden Phlox

65 other cultivars

perennialN. America Native

Delta Snow Garden Phlox

Phlox paniculata 'Delta Snow'

The Story

Plant Bio

Phlox paniculata, or garden phlox, is an upright, clump-forming herbaceous perennial native to eastern North America. It is prized for its large, fragrant, terminal flower clusters (panicles) that bloom from mid-summer to early fall. It features lance-shaped, green leaves on stiff stems and is a staple of the summer border, attracting butterflies and hummingbirds.

Distinguished by its large, conical panicles of pure white, fragrant flowers, each with a tiny yellow eye. 'Delta Snow' is a vigorous grower known for its sturdy stems and a long bloom period in mid to late summer. It exhibits good resistance to powdery mildew.

Uses & Benefits:

Provides lush, fragrant blooms that attract pollinators and add visual interest throughout summer.

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

Supports pollinators like bees and butterflies, enhancing garden 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

Medium

Humidity

Good air circulation needed

Lifespan

Perennial

Native To

Eastern North America

Toxicity

Non-toxic to humans and pets

Bloom period

Mid-summer – Late summer

In flower about 2 months of the year

Planting

How to Grow

Tuck seeds or divisions into well-prepared soil in early spring.
Water regularly to keep soil moist but not waterlogged.
Fertilize with a balanced fertilizer in early spring.
Prune after flowering to maintain shape and encourage new growth.
Mulch around plants to retain moisture during summer.
Divide every 3-4 years in early spring for rejuvenation.

Pro Tip

Plant in well-drained loam soil in a sunny spot for best blooms.

Keep It Thriving

Care Guide

Do

Water consistently during dry periods 🌱
Prune after flowering to promote bushiness
Fertilize annually in spring

Don't

Avoid overwatering to prevent root rot ❌
Don't disturb plants during flowering
Refrain from heavy pruning in late fall

Seasonal Care Calendar

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

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Colorful perennial borderFragrant flower bedWildlife-friendly garden

Companion Plants

Salvia Echinacea CoreopsisLavender Sedum

Multiply

Propagation Methods

Good to Know

Common Questions

Delta Snow Garden Phlox questions

What zones can Delta Snow Garden Phlox grow in?

Delta Snow 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 Delta Snow Garden Phlox deer resistant?

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

When does Delta Snow Garden Phlox bloom?

Delta Snow 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 Delta Snow Garden Phlox need full sun?

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