Planting guide

What to plant in Lisbon, Portugal in July

Zone 10a · Mediterranean coastal Northern Hemisphere July

July in Lisbon means hot, dry days and almost no rain — the defining feature of a Mediterranean coastal climate. New plantings this month need to tolerate heat and irrigation gaps rather than needing cool-season timing, and watering strategy matters as much as plant choice.

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Courgette / zucchiniCucurbita pepo

Fast-growing and heat-tolerant; keep soil consistently moist to avoid bitter fruit.

CucumberCucumis sativus

Thrives in summer heat with regular watering; benefits from afternoon shade in the hottest spells.

WatermelonCitrullus lanatus

A classic southern-Portugal crop — needs full sun and deep, infrequent watering.

LavenderLavandula spp.

Established plants need little water once settled; avoid overwatering, which is the main risk in this climate.

Bougainvillea

Full sun and dry conditions bring out the best colour; drought-tolerant once established.

Timing notes

  • Rainfall is lowest in summer here, so new plantings need a deliberate irrigation plan (drip irrigation is far more efficient than overhead watering in this climate).
  • Water in the early morning or evening to reduce evaporation loss during the hottest part of the day.
  • Mulch beds heavily to retain soil moisture through the dry season.
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