Primula denticulata var. alba (De) | white-flowered drumstick primula

Synonyms

Primula denticulata 'White'

Herbaceous Perennial Bogs

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A deciduous perennial to around 30cm tall with broadly strap-shaped, toothed leaves forming a basal rosette. Dense, rounded flowerheads to 8cm across packed with flat,white flowers are borne in spring on a stout, mealy stem

Position

Full sun, Partial shade

Soil Types

Loam

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity: 2–5 years
Max Spread: 0.1-0.5 metres
Max Height: 0.1-0.5 metres

Growing Conditions

Loam

Moisture: Moist but well–drained or Poorly–drained or Well–drained
pH: Acid or Neutral

Position

Full sun Partial shade

Aspect: South–facing or North–facing or East–facing or West–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): H6

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Primulaceae
Native to GB/Ireland: No
Foliage: Deciduous
Habit: Columnar upright
Genus: Primula are herbaceous or semi-evergreen perennials, forming a basal rosette of simple leaves, with salver-shaped or bell-shaped flowers which may be solitary or carried in an umbel or in whorls on an erect stem
Name Status: Correct
Horticultural Group

Horticultural Classification Codes

Horticultural Classification Codes are often given to genera which have a large number of species or cultivars. They are used to categorise cultivated plants based on specific, shared characteristics such as shape, colour, size or flowering time, and can be displayed as letters or numbers

For example:
Dahlia ‘Sunset Kate (Sin) = Single flower
Rosa ‘Marigold’ (HT) = Hybrid Tea: Denticulatae primulas have upright, toothed leaves and drumstick-shaped flowers on tall, slender stems which are most commonly purple, but also come in shades of white, blue, pink or red

How to Grow

Cultivation

Grow in deep moist or moist but well-drained neutral to acid, humus-rich soil in full sun or partial shade

Propagation

Propagate by division in early spring or propagate by seed sown from autumn to spring

Suggested planting locations and garden types

Cottage and informal garden
Rock garden
Flower borders and beds

Pruning

Cut back after flowering

Pests

May be susceptible to aphids, vine weevil, slugs, leaf and bud eelworms and glasshouse red spider mite

Diseases

Generally disease-free