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

Panicle phlox is one of gardeners' most beloved plants, having arrived from North America and won the hearts of flower enthusiasts worldwide. This perennial beauty has graced gardens since the 18th century, and its popularity remains undiminished to this day. Thanks to selective breeding, there exist countless hybrid forms offering a palette ranging from delicate pink to deep violet hues, as well as pure white and vibrant red. Moreover, most varieties boast a wonderful, distinctive fragrance that fills the entire garden at the end of summer.

Externally, phlox is a graceful plant with stems densely covered in lance-shaped leaves, with the tops forming dense pyramids of small five-petalled flowers. Tall cultivars suit the back of flower beds, whilst dwarf forms can be planted at the front—it all depends on your plans. Flowering extends from July through September, making phlox a reliable partner for filling summer gaps in the garden. Among gardeners' favourite cultivars are 'David' with white flowers, 'Bright Eyes' with pink and a striking centre, and 'Barbeque' with warm orange tones.

In the garden, phlox thrives in spots with good sunlight or light shade, and appreciates moderate watering without waterlogging. This plant is universal for Ukrainian regions—from southern areas to northern latitudes. It works beautifully in mixed borders alongside salvia, echinacea and coreopsis, and is invaluable for cutting—a bunch of phlox flowers lasts in water for nearly two weeks.

Interestingly, the name 'phlox' derives from Greek and means 'flame'—apparently for the brightness and warmth of its flowers. This plant truly looks like small flames igniting the garden as autumn approaches. If you don't yet have phlox—be sure to plant it this spring, and it will reward you with abundant 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