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Ornamentals

Hydrangea

Hydrangea macrophylla

Hydrangea
Photo: belvedere04 · CC BY 4.0 · Wikimedia Commons

A shrub with big flower heads; the symbol of the Azores and of damp northern gardens.

Light
Partial shade
Height
1–2 m
Watering
Plenty: almost daily in summer, never waterlogged
Soil
fertile, rich in organic matter; acid, pH 4.5–5.5
Edible?
No: ornamental
How to plant
Dig a hole twice the root ball; 1.2 m apart. Water well the first summer.
Care
Acid soil gives blue flowers, chalky soil pink. Plenty of water and afternoon shade; in late winter cut off only the dead heads.

Calendar by climate

Warm coast
Mild Mediterranean
Southern interior
Continental interior
Cold interior and uplands
Atlantic
Canary Islands (subtropical)
SowPlantHarvestPruneFeedTreat

Dates are for growing outdoors, based on the local climate. In a greenhouse or tunnel everything comes earlier.

Feeding and doses

Mild Mediterranean

  • Ericaceous fertiliserApr30–50 g / plant

Pest prevention and doses

Mild Mediterranean

Not needed.

How easy to grow by climate

  • Warm coastDifficultToo warm a climate
  • Mild MediterraneanNeeds regular careHot, dry summers
  • Southern interiorDifficultExtreme summer heat
  • Continental interiorNeeds regular careFrost and a short season
  • Cold interior and uplandsNeeds regular careHard, long frosts
  • AtlanticEasy
  • Canary Islands (subtropical)Needs regular careNo winter chill

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