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Garden Phlox

Phlox paniculata

Garden phlox is a tall perennial with large, fragrant flower heads in pink, purple, white and red in mid to late summer. It is a classic of cottage and pollinator gardens on both sides of the Atlantic.

Botanical FamilyPolemoniaceae
Native RegionEastern United States
Growth RateModerate
Mature Size60–120 cm (2–4 ft) tall
Bloom PeriodMid to late summer
Common NamesTall phlox, Summer phlox
Garden Phlox

Photo: Kristian Peters -- Fabelfroh 08:34, 24 September 2005 (UTC) · CC BY-SA 3.0, via Wikimedia Commons

Essential Care Requirements

Light

Full sun, Partial sun

Watering

Moderate

Water at the base in dry spells; keep the soil moist.

Soil

Fertile, moist, well-drained soil; pH 6.0–7.5.

Temperature and humidity

-35–35 °C · Moderate humidity

Feeding

Feed in spring and mulch with compost.

Pruning and propagation

Propagate by division, stem cuttings

Thin to 4–5 strong stems per clump in spring; deadhead to prolong flowering.

Garden phlox is not toxic.

Top Cultivation Tips

Choose mildew-resistant varieties such as 'David'.

Space plants for airflow.

Divide every 3–4 years.

Hardy in USDA zones 4–8.

Common problems

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Garden Phlox (Phlox paniculata) care guide