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Hardy perennial
Polemoniaceae
Perennials
Phlox 'Emerald Blue'
Creeping Phlox
Phlox 'Emerald Blue': 15 cm high and 45 cm spread, sun exposure. Blue, lavender flowers in May. Zone 2; choose soil compatible with its moisture needs.
- Exposure
- Sun
- Life cycle
- Hardy perennial
- Hardiness
- Zone 2
Discover the plant
Common namePhlox 'Emerald Blue'
FamilyPolemoniaceae
GenusPhlox
Speciessubulate
CultivarEmerald Blue
TypeHardy perennial
Botanical nameCreeping Phlox
The silhouette of Phlox ‘Emerald Blue’ (Phlox subulata ‘Emerald Blue’) adds texture to garden compositions. Its foliage features shades of green, which can be highlighted among different textures. The usual flowering period is in May. Its size of 15 cm by 45 cm makes it suitable as a groundcover and for border edging, without overshadowing neighboring plants.
In terms of cultivation, Phlox ‘Emerald Blue’ prefers a sunny exposure; the recommended soil is well-drained and rather light; avoid water pockets around the crown. After planting Phlox ‘Emerald Blue’, water enough to thoroughly moisten the root ball. Once established, allow the surface to dry between waterings and prioritize drainage, especially during thaws. Maintain a spacing of 45 cm between plants; this helps preserve their shape and allows access for care. The indicated hardiness zone is zone 2, to be assessed according to your garden's conditions.
When growing Phlox ‘Emerald Blue’, remove diseased portions and avoid piling debris in the center of the clumps. Sufficient space between phlox plants helps the foliage to dry; direct water towards the soil rather than onto the leaves. For associations, consider yarrows, upright sedums, and border salvias in varieties with similar needs. Keep its 15 cm height in mind to place lower plants on the right side and allow the flowers to be visible during May.
Planting guide
From planting to establishment.
Spacing / density
17.7 inches
Best planting time
Spring after the thaw or early autumn, allowing time for the roots to settle before the severe cold.
Propagation
Clump division; root cuttings; stem cuttings. Seed does not guarantee fidelity to a named cultivar.
Growing method
Phlox ‘Emerald Blue’: In spring after the ground thaws, or in early fall, allowing time for roots to establish before severe cold. After planting Phlox ‘Emerald Blue’, water enough to thoroughly moisten the root ball. Once rooted, allow the surface to dry between waterings and prioritize drainage, especially during thaws. Sufficient spacing between phlox helps foliage dry; direct water to the soil rather than the leaves.
Soil and care
The right care,at the right time.
Soil pH
Acid to neutral to alkaline; general indication of the botanical group
Care level
Routine maintenance
Drought tolerance
Yes
Watering
After planting Phlox ‘Emerald Blue’, water thoroughly to moisten the root ball deeply. Once established, allow the surface to dry between waterings and prioritize drainage, especially during thaws.
Soil type
Well-draining, rather light; avoid water pockets around the collar.
Fertilization
Fertilizer for flowering
Moisture
Low to medium after establishment; prioritize drainage
Seasonal care
Phlox 'Emerald Blue': remove diseased portions and avoid accumulating debris in the center of the clumps. During its flowering period (May), also watch out for damaged stems and neighboring plants that could obscure the clump.
Container growing
A garden,within reach.
Recommended pot size
A stable, pierced container, significantly wider than the root ball; size to be adapted to the format sold and the adult development.
To try out Phlox ‘Emerald Blue’ in a container, choose a stable pot with drainage holes, suited to the root ball and its future spread (45 cm). Water should drain freely after each watering; check the root ball more often than if it were planted in the ground. Plan to protect the container in winter depending on your climate.
Bloom and dimensions
Its place,in your garden.
Mature height
6 inches (15 cm)
Width / spread
18 inches (45.5 cm)
Flower color
Blue
Foliage color
Green
Foliage type
Persistent to semi-persistent depending on the climate
Growth rate
Fast
Growth habit
Creeping or ground-covering
Fragrance
Not documented for this selection
Bloom period
May
Garden associations
In goodcompany.
Companion plants
Associations to consider for Phlox 'Emerald Blue': yarrows, upright sedums, border salvias. Choose varieties that tolerate sun and comparable humidity; allow each clump its adult space.
Plants to avoid
Around Phlox ‘Emerald Blue’, especially avoid neighbors that would cover its leaves or strongly compete with its root ball. Compatibility in terms of light, water, and spread takes precedence over a list of so-called enemy plants.
Frequently asked questions
Your questions,answered.
Where to plant Phlox 'Emerald Blue'?
Provide sunshine and well-drained, light soil (avoid water pooling around the crown). Sufficient space between phlox helps the foliage dry; direct water towards the soil rather than onto the leaves.
Where should I plant Phlox 'Emerald Blue'?
Expect a height of around 15 cm and a width of 45 cm at maturity. Approximately 45 cm between centers, to be adjusted according to the actual development of the clump. This size is suitable for use as a groundcover and border plant.
When does Phlox 'Emerald Blue' bloom?
The period indicated is May. The flower color palette is blue, lavender. The exact date and duration depend on the climate, the season, and when the plant was established.
How to water and care for Phlox ‘Emerald Blue’?
After planting Phlox ‘Emerald Blue’, water enough to thoroughly moisten the root ball. Once established, allow the surface to dry between waterings and prioritize good drainage, especially during thaws. Remove diseased portions and avoid piling debris in the center of the clumps.
Can Phlox 'Emerald Blue' be grown in a pot?
To try Phlox ‘Emerald Blue’ in a container, choose a stable pot with drainage holes, suitable for the root ball and its future spread (45 cm). Water must drain freely after each watering; check the root ball more often than you would for a plant in the ground. Plan to protect the container in winter depending on your climate.
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