Gardening in Spain: sun, drought and the art of the Moorish garden

Spain: gardening to the rhythm of the sun

Spain is the country where gardening is both a battle with the sun and a celebration of it. From the rainy green hills of Galicia to the desert-like plains of Almeria, from the subtropical coast of Malaga to the continental heart of Castile — Spain offers more climate diversity than most Europeans realise.

Hardiness zones range from 8a in the Castilian interior to 11a along the southeast coast. In Madrid frost is regular in winter, while Malaga and Almeria scarcely ever see it. The great challenge is not cold but heat and drought: four to five months without meaningful rain in the south.

Soil types

The north (Galicia, Asturias, Basque Country)

Acidic, moist soil from abundant rainfall. Green as Ireland. Hydrangeas, camellias and rhododendrons flourish luxuriantly. This is not the Spain of tourist brochures — it is Atlantic Spain, with a climate resembling Brittany.

The centre (Castile, Madrid)

Dry, calcareous soil on a plateau at 600 to 900 metres. Extreme temperature swings: scorching in summer, cold in winter. Lavender, rosemary and holm oak survive here. Gardening revolves around shade and water management.

The south (Andalusia, Murcia)

Chalky, dry soil. Barely any rain from June to September. Here the Moorish garden tradition comes alive: water as a central element, shade from trees, and the scent of jasmine and orange blossom.

The east coast (Valencia, Catalonia)

Mediterranean climate with mild winters and hot summers. Citrus orchards dominate the landscape. The huerta (irrigated garden) has been the foundation of gardening here for centuries.

The Moorish legacy

The Alhambra in Granada is the ultimate example of the Moorish garden: geometric water channels, fountains, shaded patios and aromatic plants. These principles work in every Spanish garden:

• Water as focus: a small fountain or basin as the heart of the garden
• Shade: pergolas with grapevines or bougainvillea
• Fragrance: jasmine, orange blossom, lavender, rosemary
• Cool air: white walls reflecting light and patios capturing cool breezes

Drought-resistant plants

Olive trees are the symbol of the Spanish landscape. Bougainvillea explodes in purple and pink against white walls. Oleander flowers for months without water. Agaves and succulents bring sculptural form. Citrus trees (lemon, orange, kumquat) thrive along the entire coast.

Native herbs are indispensable: rosemary, thyme, oregano, sage. They need no water, no fertiliser, only sun. And they attract bees and butterflies.

The Spanish garden year

February to March: Spring begins. Plant trees and shrubs while moisture remains in the soil. Prune roses and fruit trees.

April to May: The paradise season. Everything blooms, the temperature is perfect. Plant annuals and vegetables.

June to September: The survival months. Water before sunrise or after sunset. Mulch thickly with gravel or bark. In the south this is not gardening season but a waiting period.

October to November: Spain's second spring. The rain returns, temperatures drop to bearable levels. Now you can plant, sow and enjoy again.

December to January: Mild winter in the south, cold inland. Prune olive trees. Plant spring bulbs.

Water management

Water is the most precious resource in the Spanish garden. Drip irrigation saves up to 70 per cent compared to sprinklers. Use mulch — gravel, bark or straw — to slow evaporation. Capture rainwater in a barrel or underground cistern. Choose plants that naturally cope with minimal water.

Design your Spanish garden wisely. Upload a photo at gardenworld.app and discover how a thoughtful design combines shade, water and greenery — even under the blazing Spanish sun.