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Ornamentals

Petunia

Petunia × hybrida

Petunia
Photo: Gabriel Collares · CC BY 4.0 · Wikimedia Commons

An annual covered in flowers for pots, window boxes and borders.

Light
Full sun (6 h or more)
Height
0.2–0.4 m
Watering
Moderate: 2–3 times a week in summer
Soil
fertile, rich in organic matter; loose and well-drained
Edible?
No: ornamental
How to plant
Plant the young plant with its crown at soil level, 25 cm apart.
Care
Deadhead and feed every two weeks so it keeps flowering.

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. You can start seedlings earlier indoors or in a greenhouse, but plant them out only once the frosts are over.

Feeding and doses

Mild Mediterranean

  • High-potash liquid feedMay, Jun, Jul, Aug≈20 ml / 10 L

Pest prevention and doses

Mild Mediterranean

  • AphidsPotassium soap · May10–20 ml / L

Approximate doses: always follow the product label. Spray in the evening, never in full sun or on flowers visited by bees. No sulphur above 30 °C.

How easy to grow by climate

  • Warm coastEasy
  • Mild MediterraneanEasy
  • Southern interiorNeeds regular careExtreme summer heat
  • Continental interiorEasy
  • Cold interior and uplandsNeeds regular careHard, long frosts
  • AtlanticNeeds regular careRain and humidity: fungal disease
  • Canary Islands (subtropical)Easy

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