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Shrubs

Phlomis grandiflora

large-flowered Jerusalem sage

An evergreen, woody perennial with rough-textured, heart-shaped and long, dark green leaves which are hairy and silvery green on the underside. Has whorls of golden yellow, hooded flowers all through summer. Seedheads can offer structural interest in winter and also attract wildlife

Synonyms

Phlomis grandiflora 'Suleiman'

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Ultimate height

1.5–2.5 metres

Time to ultimate height

2–5 years

Ultimate spread

1.5–2.5 metres

Chalk

Loam

Sand

Moisture

Moist but well–drained, Well–drained

pH

Acid, Alkaline, Neutral

	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Full sun

Aspect

South–facing or West–facing or East–facing

Exposure

Exposed or Sheltered

Hardiness
Hardiness ratings
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
H1a: under glass all year (>15C)
H1b: can be grown outside in the summer (10 - 15)
H1c: can be grown outside in the summer (5 - 10)
H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
H4: hardy through most of the UK (-10 to -5)
H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
H6: hardy in all of UK and northern Europe (-20 to -15)
H7: hardy in the severest European continental climates (< -20)

Botanical details

Family: Lamiaceae
Native to GB / Ireland: No
Foliage: Evergreen
Habit: Bushy
Genus: Phlomis can be herbaceous perennials or evergreen shrubs, with sage-like leaves and whorls of tubular, hooded flowers over a long period in summer
Name status: Correct
Plant range: SW Asia

How to grow

Cultivation

Will grow nicely in fertile well-drained soil in full sun and will tolerate some partial shade

Propagation

Propagate by seed or division in spring and softwood cuttings in summer

Suggested planting locations and garden types

Cottage and informal garden
Wildlife gardens
Coastal
Mediterranean climate plants
Low Maintenance
Flower borders and beds

Pruning

Prune old wood in spring, see pruning group 9 or pruning group 8 for more detail

Pests

May be susceptible to leafhoppers

Diseases

May be susceptible to honey fungus (rarely)

Get involved

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