HYDRANGEA paniculata 'Grandiflora'

Commonly known as Hortensia

Large panicles of numerous white sterile florets in summer and autumn becoming deep pink
Further Reading....
  • Deciduous
    Large, glossy, toothed, mid-green leaves.
  • Shades of pink
    All shades of pink through to Carmine (red)
    In autumn
  • White
    In summer
  • Height
    3-7m (10-23ft)
  • Spread
    2.5m (8ft)
  • Tall Shrub
    Large flowerheads 20-20cm (8-12in) tall consisting almost entirely of sterile florets.
  • Hardy - cold winter
    Hardy in most places throughout the UK even in severe winters. May not withstand open/exposed sites or central/northern locations. Plant can withstand temperatures down to -15°C (5°F)
  • Full sun
    Requires a sheltered site
  • Partial shade

HYDRANGEA paniculata 'Grandiflora'

 

 

  • Additional Features
    Good to know
    To produce larger flowerheads cut back previous season's shoots to within a few buds of the woody framework
    Pests & Diseases
    Red spider mites, scale insects, vine weevils, capsid bugs, grey mould(Botrytis), hydrangea virus, powdery mildew, leaf spot, honey fungus.
    Place of origin
    Japan. Collected by German botanist Phillipp Franz von Siebold 1859.
  • Burncoose Specialities
    Hydrangeas
  • Flower Shape
    Panicles
  • Garden Location/Conditions
    Border
    Suitable for a large shrub border
  • Hardiness
    Fully hardy
  • Leaf margin
    Serrate
    		(see photos above)
  • Leaf shape
    Ovate
    		(see photos above)
  • Pruning group
    Pruning group 1
    Suitable for: Deciduous and evergreen trees, and some deciduous shrubs.
    Pruning: Minimal pruning required. Prune wayward or crossing branches to maintain a healthy framework.
    When: When dormant in the late winter/early spring. Some in the summer/autumn to prevent bleeding of sap.
    Pruning group 4
    Suitable for: Deciduous trees and shrubs that flower on current year's growth or are grown for winter stem effect.
    Pruning: Hard prune to a low permanent framework.
    When: Annually in early Spring.
  • Seasonal Interest
    Autumn
    Summer
  • Soil Conditions
    Fertile moist well-drained soil
    Humus-rich
  • Toxic - Category C
    Harmful if eaten
    Pets, i.e. cats, dogs, rabbits, rodents, notably dogs and cats
    May cause skin allergy
    People
  • Wildlife
    Rabbit Resistant
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Hydrangeas - Care Guide
3-7m (10-23ft)
 Tall Shrub - guide for size not form Average Person
  2.5m (8ft)
  

Useful extras...

Fertilisers & Feeds - Vitax
Q4 Pelleted Fertiliser
A useful fertiliser suitable for use on a wide variety of plants. Q4 provides all the nutrients and trace elements essential for vigorous growth, abundant flowering and ripening of fruit.
3 options from £6.00

Fertilisers & Feeds - Empathy
Afterplant - Grow Your Own
AFTER PLANT GROW YOUR OWN seaweed is ready to use liquid concentrate that was specially formulated be used on all edible plants.
Only £8.00

Fertilisers & Feeds - Empathy
Afterplant - Tomatoes
AFTER PLANT TOMATO FEED Liquid Concentrate with Bio stimulant is a high potash liquid concentrate containing seaweed extract, plant derived amino acids and other nutrients specifically formulated to benefit tomatoes and greenhouse plants.
Only £8.00

Fertilisers & Feeds - Empathy
Rootgrow mycorrhizal fungi
Recommended by the RHS. Contains Rootgrow™ mycorrhizal fungi. Suitable for all trees and shrubs (except rhododendrons, azaleas, heathers, cranberries and blueberries)
3 options from £3.00

Fertilisers & Feeds - Empathy
Rootgrow Ericoid mycorrhizal fungi
This specially adapted Rootgrow™ mycorrhizal fungi will boost the growth of acid-loving plants like rhododendrons, azaleas, heathers and blueberries. It contains ericoid and arbuscular mycorrhizal fungi, which are found in poor acidic soils where ericaceous plants naturally grow.
Only £7.50

Fertilisers & Feeds - Empathy
All-purpose Seaweed Stimulant
All-purpose organic concentrated seaweed feed that is a ready to use, derived from sustainable harvested kelp, that can be used on all outdoor and indoor plants, except acid loving plants. Perfect used in conjunction with Rootgrow™.
Only £7.50

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