The Botanical Diary
P
Flowers

Phlox

Phlox paniculata
Also known asgarden phlox, fall phlox, summer phlox

The name phlox derives from the Greek word for 'flame'.

Regions
all regions
Colour
pink, ліловий, white, red
Phlox (garden phlox, fall phlox, summer phlox)
🌸
Bloom
July–September
☀️
Light
Full sun / напівтінь
💧
Watering
Moderate
📏
Height
0,6–1,2 m
❄️
Hardiness
Zone 4

Garden Phlox is one of the most beloved plants among gardeners, having travelled from North America to capture the hearts of flower enthusiasts worldwide. This perennial beauty has graced gardens since the eighteenth century, and its popularity shows no signs of waning. Through selective breeding, countless hybrid forms now exist, offering a palette ranging from delicate pink through deep violet tones, pure white, and striking scarlet. Best of all, most varieties possess a wonderful, distinctive fragrance that fills the entire garden as summer draws to a close.

Visually, phlox is a graceful plant with stems densely clothed in lanceolate leaves, whilst the tips form tight pyramids of small five-petalled flowers. Tall vigorous varieties suit the middle distance of borders, whilst dwarf forms work perfectly at the front—it all depends on your design vision. Flowering extends from July through September, making phlox a reliable ally for filling the summer gaps in any garden scheme. Amongst the most cherished varieties are 'David' with its pristine white blooms, 'Bright Eyes' with pink petals and a striking eye, and 'Barbeque' with its warm orange undertones.

In the garden, phlox thrives in good sunlight or light dappled shade, tolerating moderate watering provided the soil does not become waterlogged. This plant is remarkably well-suited to all Ukrainian regions, from southern landscapes to northern latitudes. It performs beautifully in mixed borders alongside salvia, echinacea, and coreopsis, whilst remaining invaluable for cutting—a vase of phlox will last nearly two weeks in water.

Fascinatingly, the name 'phlox' derives from ancient Greek and means 'flame'—apparently referencing the brightness and warmth of its flowers. These blooms truly appear as tiny fires illuminating the garden as autumn approaches. If phlox is not yet gracing your borders, plant it this spring and it will reward you with countless clusters of fragrant flowers.

Location & soil

Phlox — planting & location

LightFull sun / напівтінь
Soil typerich суглинок, рН 6–7
Planting timeApril–May або August–September
Plant spacing0,4–0,6 m
Planting depth8–10 см

Perennial with extended flowering period.

Water needs

How to water Phlox

IntensityModerate
FrequencyEvery 5–7 days (в)
Volume10–12
MethodAt the base

Avoid wetting the foliage.

Annual care

Fertilizing and pruning: Phlox

Spring fertilizingNitrogen (April)
Summer fertilizingPhosphorus–potassium (July–August)
Autumn fertilizingSuperphosphate (September)
Pruning timeOctober, April
Pruning typeSanitary

Cut back to 5–7 cm from the ground in autumn.

Cold hardiness

Phlox — winter hardiness & care

Hardiness zoneZone 4
Winter coverNot required.
Cover timing
Plant protection

Diseases and pests of Phlox

Diseases
Powdery mildewLeaf spot
Pests
NematodeAphid
Garden design

What grows well with Phlox?

Лілія, рудбекія