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St Johns wort Rowallane in the GardenTags plant encyclopedia

Hypericum 'Rowallane' hybrid

 

St John's wort 'Rowallane'

Hypericum are fast growing evergreen, semi-evergreen or deciduous shrubs. The low growing forms are suitable as ground cover. 'Rowallane' bears large, golden flowers from early to late summer. The leaves are mid-green in colour and can fall in cold winters. 'Rowallane' grows best in a sunny position with shelter from cold winter winds.

Contributed by @ismise

 
plant Features
  • St Johns wort Rowallane likes full sun

    Full sun

  • St Johns wort Rowallane likes occasional watering

    Occasional watering

  • St Johns wort Rowallane is full frost hardy: 5f (-15°c)

    Full Frost Hardy: 5F (-15°C)

  • St Johns wort Rowallane likes free draining

    Free draining

 
plant information

Common name

St John's wort 'Rowallane'

Latin name

Hypericum 'Rowallane' hybrid

type

Deciduous trees or shrubs

family

Hypericaceae

ph

5.0 - 8.5 Acid - Neutral

  • Light

    St Johns wort Rowallane likes full sun

    Full sun

  • Frost

    St Johns wort Rowallane is full frost hardy: 5f (-15°c)

    Full Frost Hardy: 5F (-15°C)

  • Soil

    St Johns wort Rowallane likes free draining

    Free draining

  • Water

    St Johns wort Rowallane likes occasional watering

    Occasional watering

Plant & bloom calendar

  •  
    Best time to plant
  •  
    When the plant will bloom

full grown dimensions

The size of a fully grown St Johns wort Rowallane is 1.50meters x 2.00meters 1.50 M 2.00 M

Hypericum 'Rowallane' hybrid

Hypericum are fast growing evergreen, semi-evergreen or deciduous shrubs. The low growing forms are suitable as ground cover. 'Rowallane' bears large, golden flowers from early to late summer. The leaves are mid-green in colour and can fall in cold winters. 'Rowallane' grows best in a sunny position with shelter from cold winter winds.


Flowering Season

From Early Summer TO Early Autumn

The 3 inch flowers are borne singly and are produced in succession from early summer through to early autumn.

 

Planting

From Late Autumn TO Late Winter

Plant out in any well drained, fertile soil from autumn to late winter in a sheltered border in full sun. As these shrubs are late-flowering, it is advisable to give them wall protection in northern gardens.

 

Propagation by cuttings

From Early Spring TO Late Summer

Take heel cuttings, 3-4 inches long from half-ripe lateral shoots preferably with a heel at any time between spring and late summer. Insert into equal parts of sand and peat in a propagating case at a temperature of 16C. When rooted, pot the cuttings singly in 3 inch pots of John Innes No 1 and overwinter in a cold frame. The following spring, pot on into 4 inch pots and plunge outdoors until planting out in autumn.

 
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