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Garden phlox: Phlox paniculata Katherine

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Garden phlox: Phlox paniculata Katherine

'Katherine' is a striking, mildew-resistant phlox that produces pale-blue flowers with white eyes in summer. The fragrant flowers form rounded heads, which are held above oval to lance-shaped, medium-green leaves.

Profile

Plant typeperennial
Hardiness zones4 to 8
Lightfull-sun
Height up to 4 ft.
Spread2 ft. to 3 ft.
Soil moisturemoist
Bloom timesummer
Flower colorblue
Bloom size1 in. to 1 in.
Foliage colormedium-green
Foliage size5 in. to 5 in.

did you know?

Phlox are native to the moist riverside habitats of the eastern United States and have been cultivated since colonial times. The word is Greek for "flame," a reference to the sprays of flowers held above the foliage.

general maintenance:

Deadhead spent flowers. After killing frost or before new growth emerges in spring, remove old growth at ground level.

pests/diseases:

Caterpillars, leaf miners, leaf spot, powdery mildew, and rust may occur.

controls:

Handpick caterpillars. Remove leaves damaged by leaf miners. For leaf spot and rust, remove diseased leaves or severely diseased plants; reduce moisture for leaf spot. To avoid powdery mildew, plant in a well-ventilated area, do not water from overhead, and use horticultural oil spray.

how to sow/plant:

Plant in spring or fall. Start with new plants or divisions. Choose a sunny site with moist, well-drained soil, and amend with well-rotted manure or compost. Set plants at same depth they were in their pots, spacing 3 feet apart. Water upon planting, and mulch to conserve moisture.

water and fertilize:

Monitor soil moisture all season. Feed after flowering with an all-purpose fertilizer, following package directions.

garden hint:

Martha grows phlox in her gardens because she loves them as cut flowers. Harvesting them when they are only half open, she can enjoy them indoors over a longer period.

features:

  • Attractive Flowers
  • Attractive Foliage
  • Attracts Butterflies
  • Disease Resistant
  • Fragrant
  • Native

garden uses:

  • Flowerbed borders
  • Naturalizing

other uses:

  • Cut Flower

combine with:

peonies daylilies burnet and sneezeweed

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