Garden phlox: when to plant and care
Pick mildew-resistant cultivars and give air flow.
| Botanical name | Phlox paniculata |
|---|---|
| Type | perennial |
| USDA zones | 4–8 |
| Sun | full sun |
| Water | moderate |
| Bloom | summer |
| Mature size | 2–4 ft |
| Planting time | Spring after the last frost, or early fall |
Gives roots several weeks to settle before heat or freeze.
Example dates
| Place | Dates |
|---|---|
| Austin, TX (78701) | spring: Mar 10–Apr 21; fall: Sep 22–Oct 13 |
| Atlanta, GA (30303) | spring: Mar 24–May 5; fall: Sep 13–Oct 4 |
| St. Louis, MO (63101) | spring: Apr 1–May 13; fall: Sep 9–30 |
| Chicago, IL (60614) | spring: Apr 10–May 22; fall: Sep 10–Oct 1 |
| Denver, CO (80202) | spring: Apr 30–Jun 11; fall: Aug 17–Sep 7 |
| Seattle, WA (98101) | spring: Mar 13–Apr 24; fall: Sep 22–Oct 13 |
Every ZIP page has its own dates. Find your ZIP.
State plant programs
- Selected by the Texas Superstar® program (Texas A&M AgriLife Research and Extension), listed as “John Fanick Phlox, Victoria Phlox (cultivars only)”
“Texas Superstar” is a registered trademark of Texas A&M AgriLife Research. Use ® on first mention, no logo, not in our titles/domain/brand. Phrase as “selected as a Texas Superstar® plant by Texas A&M AgriLife.” YardThisWeek is not affiliated with, sponsored by or endorsed by these programs. See state plant programs.
Find perennials: Lowe's · The Home Depot · Amazon
Retailer links are plain search links. We don't earn anything from them today; if we join a retailer's affiliate program later, we may earn a commission at no extra cost to you. Affiliate disclosure.
Sources
Summarized in our own words from public extension publications.
Never miss a frost: get The Dial
Weekly yard timing, plus frost and soil-temperature alerts for your ZIP code.
- Freeze alerts
- Soil-temp heads-up
- Weekly yard to-dos
Free. One weekly email plus alerts when your ZIP has a frost or a soil-temperature change worth acting on. After you submit, Kit (our email provider) sends a confirmation email: check your email and click the link to confirm. You aren't subscribed until you do. We collect only your email address and ZIP, sent to Kit to deliver The Dial. Unsubscribe anytime.