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Nectaroscordum siculum subsp. bulgaricum

Bulgarian honey garlic

Bulgarian honey garlic

© RHS

17 suppliers

  • Other common names Bulgarian honey garlic

  • Family Alliaceae

  • Genus Nectaroscordum are deciduous bulbous perennials with linear, garlic-scented leaves and a tall leafless stem with a terminal umbel of bell-shaped flowers in early summer

  • Details N. siculum subsp. bulgaricum is an upright bulbous perennial to 1.2m tall, with narrow keeled leaves to 40cm long, and umbels of nodding green-tinged cream flowers with purple markings, in early summer, followed by erect seed capsules

  • Plant range Eurasia

Characteristics

  • Foliage Deciduous

  • Habit Columnar/Upright

  • 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)

    H5

Colour

Sunlight

  • Full Sun

  • Partial Shade

  • Aspect South-facing or West-facing or East-facing

  • Exposure Exposed or Sheltered

Soil

  • Sand

    Sand

  • Clay

    Clay

  • Chalk

    Chalk

  • Loam

    Loam

  • MoistureWell-drained

  • SoilSand, Clay, Chalk, Loam

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height 1-1.5 metres

  • Ultimate spread 0.1-0.5 metres

  • Time to ultimate height 2-5 years

How to grow

Cultivation Easy to grow in almost any type of well-drained soil. Plant in groups 5cm deep and 25cm apart. For best flowering leave bulbs undisturbed. May self-seed freely

Propagation Sow seed in containers in cold frame in autumn or spring. Remove offsets in summer

Suggested planting locations and garden types Flower borders and beds Cottage & Informal Garden Gravel Garden

How to care

Pruning Deadhead before seed ripens to prevent self-seeding

Pests Generally trouble free

Diseases Generally trouble free

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