Chrysanthemum 'Shamrock' (10b)

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green spider chrysanthemum

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green spider chrysanthemum visionspictures.com

Other common names

green spider chrysanthemum

Herbaceous Perennial
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Position

Full sun

Soil Types

Chalk, Clay, Loam, Sand

Size

Time to Maturity
1–2 years

Growing Conditions

Chalk Clay Loam Sand
Moisture
Moist but well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun
Aspect
South–facing or West–facing or East–facing
Exposure
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)
No preference

Botanical Details

Family
Asteraceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Clump forming, Bushy
Genus
Chrysanthemum are erect woody-based perennials with aromatic, pinnately lobed leaves and flowerheads of diverse form, from late summer to late autumn
Name Status
Accepted
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

Indoor Quill chrysanthemums are characterised by their fully double flower-heads in which the florets are slender and tubular, with an oblique opening to their tips

How to Grow

Cultivation

Does best in a well-drained, moderately-fertile soil in full sun. Pinch out the growing tip when the plants are 15-20cm tall to encourage free-flowering, bushy plants. See chrysanthemum cultivation for further information

Propagation

Propagate by division or rooting softwood cuttings in loam-less potting compost at 16 °C in spring

Suggested planting locations and garden types

  • City and courtyard gardens
  • Cottage and informal garden
  • Patio and container plants
  • Cut flowers
  • Flower borders and beds
  • Wall side borders

Pruning

Pinch out growing tips and cut down to 10cm after flowering

Pests

May be susceptible to aphids, chrysanthemum leaf miner, leaf and bud eelworms, earwigs, capsid bug and glasshouse red spider mite

Diseases

May be susceptible to chrysanthemum white rust, Powdery mildews and grey moulds