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Phlox 'Dophlflawhim' FLAME PRO WHITE perennial phlox (paniculata group)
Symbivit Tric (arbuscular)
Symbivit (arbuscular)Phlox
The genus Phlox was described by Carl Linnaeus (1707–1778) in 1753 and placed in the family Polemoniaceae, one of the most botanically diverse North American families. Kew lists 69 accepted species, most of them originating from a wide range of North American habitats – from moist woodlands and river floodplains to prairies, rocky outcrops and alpine tundra. The name comes from the Greek phlox, meaning “flame”, which aptly captures the impression their colours made on early botanists. By the 18th century the genus had already attracted the interest of European growers, as it brought into gardens something the flora of the time lacked: vivid colours, long flowering periods and fragrance. Several historical synonyms appeared in taxonomy, such as Lychnidea Hill (1756) or Armeria Kuntze (1891), reflecting attempts by various authors to capture the morphological variability of the genus. The deepest scientific insight into its evolution and diversity was provided by the American botanist Verne Grant (1917–2004), whose 1959 monograph on Phlox remains a cornerstone of modern understanding. The very first Phlox seeds reached Europe from Virginia in the first third of the 18th century, arriving in England.
Phlox paniculata, the perennial phlox, described by Carl Linnaeus in 1753, originates from the eastern United States, where it grows along meadow edges, woodland margins and stream banks. It reached Europe as early as around 1732, well before its formal description. At that time North America was being systematically explored by John Bartram (1699–1777) and his son William Bartram (1739–1823), who supplied European gardens with seeds and plants; their collections were likely responsible for the spread of phloxes in England and France. In Czechia they appeared at the end of the 19th century, and by around 1900 they were among the most widely grown perennials – nurseries offered dozens of cultivars and large gardens planted them in groups visible from afar. Their popularity was pan‑European, especially in England, still a perennial paradise today, where the Royal Horticultural Society devoted three full A4 pages to phloxes in its encyclopaedia. Breeding developed from the 19th century onwards, first in England and France, later in Germany, where Georg Arends (1863–1952) created the first hybrids of P. paniculata × P. divaricata. Modern breeding focuses on more compact growth, resistance to powdery mildew and clean, contemporary colours.
FLAME PRO WHITE perennial phlox is as pure as first snow or a bride’s dress. Its flowers are truly snow‑white, with a gentle, barely perceptible creamy tint at the centre that disappears in full sun and reappears in the evening. It flowers reliably from July to late August and belongs among cultivars capable of producing a second flush: new, smaller panicles form along the stem beneath the main one – which is best removed once spent – giving the plant a lively appearance even in late summer. The stems reach approximately 50 to 60 cm, are firm and upright, and hold their shape even after rain, a key improvement over older cultivars that often bent or broke. The leaves are healthy, fresh green, without a tendency to yellow prematurely, and the plant is self‑cleaning – spent flowers disappear on their own rather than remaining brown and withered on the panicle. FLAME PRO WHITE boasts high resistance to powdery mildew, so in normal summers its foliage remains attractive and healthy until the end of the season.
The Flame series was initiated by Dutch breeder Gosen Bartels around 2006. At that time most garden phloxes were tall, had softer stems and often suffered from powdery mildew in warm summers. Bartels therefore created the Flame series with seven recognised cultivars, each only about 40–45 cm tall, with firm stems, regular panicles and markedly lower susceptibility to mildew than older garden phloxes. And, as appetite grows with eating, he did not rest on his laurels but continued breeding. His goal was larger panicles, cleaner colours and above all stable health even in highly variable summers, when Flame cultivars began to lose resistance. His new follow‑up series was named Flame Pro and differs from the original line in three essential traits:
• even stronger stems that hold their shape even in heavy rain,
• larger and denser panicles, visibly fuller than in Flame,
• reliable resistance to powdery mildew even under more demanding conditions.
Flame Pro has “only” four cultivars – Cerise, Lilac, Soft Pink and White – because it was a targeted selection of specific traits rather than a broad colour palette. All cultivars can flower into September, as after the main flush they produce numerous smaller, secondary panicles along the stem.
Last revision 24‑09‑2026
Perennial phlox and their hybrids require a sunny position and a fertile, evenly moist soil that does not dry out in summer. They grow best in loamy, slightly acidic to neutral soils rich in humus; heavy clays should be improved with compost and sand, though once established they succeed even there. Watering is crucial mainly in July and August, when they form their largest panicles – drought leads to smaller flowers, shorter flowering and is one of the causes of powdery mildew in older, non‑tolerant cultivars, just as excessive moisture during very rainy summers can be. They appreciate a steady supply of nutrients: a spring application of compost or slow‑release fertiliser is beneficial, and light feeding in summer supports the formation of secondary panicles.
To maintain a compact shape, it is best to plant them where air can circulate; dense plantings increase the risk of mildew, even though modern cultivars are more resistant. Removing spent panicles encourages the formation of smaller, late‑season panicles along the stem. In autumn the stems can be cut back to ground level for a tidy appearance, though the cut can just as well be done in early spring. They are fully hardy to at least −34 °C, and some sources suggest that well‑established plants under snow cover may withstand −40 °C (we have not been able to verify this). In good conditions they persist for many years, gradually forming wider, stable clumps without requiring division like many other perennials.
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- STANDARD QUALITY - Plants of this group are 1st class quality with number of branches and overall density adequate to their size and age, considering they were container grown.
- DE LUXE QUALITY - This label guarantees a luxurious quality of manually selected plants that, compared to their height and age, are exceptionally dense and beautiful.
- EXTRA - These plants are usually mature and bigger specimens with exceptional overall appearance.
- STANDARD (as described in the plant form) means a tree with a trunk of 190-210 cm and a crown at the top, unless specified differently. The commercial size for trees is their girth measured in the height of 1m from ground.
- HOBBY - These plants are of the same quality as our standard-quality plants but younger and therefore cheaper.
- SHRUB - a woody plant with branches growing bushy from the ground level.
- HALF-STANDARD or MINI-STANDARD - a small tree with shorter trunk, its size is usually specified.
- FEATHERED - These are trees with branches growing already from the base of the trunk and up along the stem.
- GRASSES and PERENNIALS - Sizes given usually read the diameter of the pot or the clump, as specified.
