Largeleaf Phlox (Phlox amplifolia)

Largeleaf Phlox

Phlox amplifolia, or largeleaf Phlox, is an easy to grow, pink flowering perennial. These long-lasting flowers bloom all summer, thrive in full sun, and are very attractive to butterflies and hummingbirds. They add height, fragrance, and color to any summer garden.

Scientific classification

Species

Largeleaf Phlox (Phlox amplifolia)

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Perennial

Lifespan

Herb

Plant Type

Summer, Fall

Bloom Time

66 cm to 76 cm

Plant Height

Semi-evergreen

Leaf type

5 - 32 ℃

Ideal Temperature

Distribution of Largeleaf Phlox

Distribution Map

Largeleaf Phlox, a perennial plant, is naturally endemic to temperate regions of the North American continent. Beyond its indigenous habitat, largeleaf Phlox has been introduced and cultivated in various parts of the world, thriving in gardens and controlled environments but not widely naturalized.

Native

Cultivated

Invasive

Introduced

No species reported

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Habitat

Woods, Slopes along streams

Hemisphere Trend Curve

Northern

Sorthern

Culture

Garden Use

Largeleaf Phlox is a favorite garden perennial. Because of its tall, lush growth and prolific flowering, it is perfect for brightening up the back of borders. It is highly attractive to pollinators and hummingbirds, which should earn it a spot in wildlife and pollinator gardens. Finally, the solid and long stems make largeleaf Phlox an excellent addition to cutting gardens and wind-prone beds.

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Care Guide for Largeleaf Phlox

Every week

Water

Full sun

Sunlight

5 - 32 ℃

Ideal Temperature

Garden Soil

Soil Type

Water: Largeleaf Phlox thrives in humid woodland settings and requires consistent moisture. It prefers balanced soil moisture, with weekly watering essential for healthy growth. Typically grown outdoors, mulching helps retain moisture during its active growing season, enhancing its ornamental value.

Fertilize: Largeleaf Phlox thrives with balanced all-purpose fertilizers in spring and summer. Apply high phosphorus pre-bloom every 4-6 weeks; follow product guidelines and reduce in fall. Avoid over-fertilization and apply only to moist soil to prevent root burn, adjusting for growth stages and seasons.

Pruning: Largeleaf Phlox features lush foliage and vibrant blooms. Prune in early to late spring to remove dead stems, improve airflow, and promote healthy growth. Thinning crowded areas and cutting leggy stems enhance appearance while preventing disease, aligning with the plant's optimal growth cycle.

Propagation: Largeleaf Phlox is best propagated through healthy cuttings, enhancing rooting success with a rooting hormone. Use a well-draining medium kept moist, and provide indirect light and warmth. Rooting typically occurs in weeks, after which young plants can acclimatize to permanent conditions.

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Distribution of Largeleaf Phlox

Culture

Care Guide for Largeleaf Phlox

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