North America Native Plant

Annual Phlox

Botanical name: Phlox drummondii drummondii

USDA symbol: PHDRD

Life cycle: annual

Habit: forb

Native status: Non-native, reproduces and persists in the wild in Canada âš˜ Native to the lower 48 states  

Synonyms: Phlox drummondii Hook. var. peregrina Shinners (PHDRP)  âš˜  Phlox goldsmithii Whitehouse (PHGO3)   

Annual Phlox: A Colorful Carpet of Blooms for Your Garden If you’re looking for a splash of vibrant color that keeps on giving from spring through fall, annual phlox might just be your new best friend. This cheerful little flower has been winning over gardeners with its easy-going nature and ...

Annual Phlox: A Colorful Carpet of Blooms for Your Garden

If you’re looking for a splash of vibrant color that keeps on giving from spring through fall, annual phlox might just be your new best friend. This cheerful little flower has been winning over gardeners with its easy-going nature and spectacular show of blooms that seem to go on forever.

What Exactly is Annual Phlox?

Annual phlox (Phlox drummondii drummondii) is a delightful forb – basically a non-woody flowering plant that completes its entire life cycle in just one growing season. Don’t let the annual part fool you into thinking it’s high-maintenance, though. This little charmer is surprisingly self-sufficient and has a knack for popping up year after year through self-seeding.

You might also encounter this beauty under some other scientific names like Phlox drummondii Hook. var. peregrina or Phlox goldsmithii, but they’re all referring to the same lovely plant.

Where Does Annual Phlox Come From?

This colorful character is native to the southern United States, particularly Texas and Louisiana. However, it has made itself at home across a surprisingly wide range, now growing in states from Alabama to Vermont, and even venturing into parts of Canada like New Brunswick and Ontario. It’s one of those plants that has naturalized well beyond its original stomping grounds.

Why You Might Want Annual Phlox in Your Garden

Here’s where annual phlox really shines – it’s like having a reliable friend who always shows up to the party looking fabulous:

  • Non-stop blooms: From spring through fall, you’ll have continuous color
  • Pollinator magnet: Butterflies, bees, and even hummingbirds can’t resist those sweet blooms
  • Color variety: Choose from pink, red, white, purple, salmon, and more
  • Low maintenance: Once established, it’s quite drought tolerant
  • Self-seeding: Plant it once, enjoy it for years as it naturally reseeds

Perfect Spots for Annual Phlox

Annual phlox is wonderfully versatile and fits into many garden styles. It’s perfect for:

  • Cottage gardens where its informal charm fits right in
  • Wildflower meadows and naturalized areas
  • Border plantings that need reliable color
  • Mass plantings for dramatic impact
  • Annual flower beds mixed with other seasonal favorites

Growing Conditions and Care

The good news? Annual phlox isn’t particularly fussy about where it lives. Here’s what it prefers:

  • Sunlight: Full sun for the best flowering, though it tolerates some light shade
  • Soil: Well-drained soil is essential – it doesn’t like wet feet
  • Water: Regular watering when young, then quite drought tolerant
  • Climate: Hardy in USDA zones 2-11 when grown as an annual

Planting and Care Tips

Getting started with annual phlox is refreshingly straightforward:

  • When to plant: Direct seed in fall or early spring for best results
  • Seeding: Scatter seeds directly where you want them to grow
  • Spacing: Don’t worry too much about perfect spacing – they’ll sort themselves out
  • Maintenance: Minimal care needed once established
  • Deadheading: Remove spent flowers to encourage more blooms, or leave them to self-seed

A Word About Native Alternatives

While annual phlox has naturalized well in many areas, if you’re specifically looking to support local ecosystems, consider exploring native phlox species that are indigenous to your particular region. Many states have their own native phlox varieties that provide similar beauty while supporting local wildlife and maintaining ecological balance.

The Bottom Line

Annual phlox is one of those plants that gives you a lot of bang for your buck. It’s colorful, reliable, attracts beneficial insects, and once you plant it, there’s a good chance it’ll keep showing up in your garden for years to come through natural reseeding. Whether you’re a beginner gardener looking for something foolproof or an experienced gardener wanting to add reliable color to your landscape, annual phlox deserves a spot on your planting list.

Just remember to give it good drainage and plenty of sun, and you’ll be rewarded with months of cheerful blooms that both you and your garden’s pollinators will absolutely love.

Annual Phlox

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Solanales

Family

Polemoniaceae Juss. - Phlox family

Genus

Phlox L. - phlox

Species

Phlox drummondii Hook. - annual phlox

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA