Malta Hardiness Zones

From the sun-baked limestone terraces of Gozo to the breezy coastal cliffs of Mellieħa, Malta offers a unique and sometimes unpredictable gardening landscape. The island nation falls within USDA hardiness zones 10a to 11b, reflecting its long, hot summers and short, mild winters. Although Malta boasts one of the most stable climates in Europe, climate change has brought increasing heatwaves and water shortages, making traditional gardening more challenging.

Malta

In this article, you will learn:

With temperatures rising past 40°C during peak summer and rainfall becoming increasingly erratic, Maltese gardeners must adapt quickly to preserve their plants and harvests. Though the island’s compact size and consistent sunshine offer advantages, its exposure to sea winds and limited freshwater resources present real challenges for horticulture.

Image from Plant Maps

Characteristics of Malta’s Planting Region

Malta’s Mediterranean climate shapes its gardening environment in the following ways:

  • Long, dry summers with temperatures regularly above 35°C
  • Short, mild winters with little risk of frost
  • Low annual rainfall, mostly concentrated in autumn and winter
  • High humidity levels, especially near coastal areas
  • Frequent hot winds such as the sirocco, carrying dust from North Africa
  • Limited natural freshwater sources for irrigation
  • Thin, alkaline soils, often requiring soil amendment for better yields

Due to these factors, the ideal planting seasons in Malta are typically autumn (October–December) and late winter to spring (February–April). However, extreme summer heat can reduce yield and even halt outdoor cultivation unless shade or greenhouse protection is used.

Challenges of Growing in Malta

Extreme Heat

Summers in Malta can be scorching, with temperatures often exceeding 40°C. Prolonged heat stress can scorch leaves, dry out soil rapidly, and reduce plant productivity.

Water Scarcity

Malta has no rivers or lakes and depends on desalinated seawater and limited groundwater. Water conservation is critical, making irrigation efficiency a top priority for gardeners.

Coastal Winds

Strong winds, especially from the north and east, can dry out soil and damage delicate plants. Windburn and salt exposure are constant concerns for those near the sea.

The Benefits of Using a Greenhouse in Malta 

Greenhouses provide a controlled environment that helps Maltese gardeners overcome heat, wind, and water-related challenges, extending the planting season and increasing the variety of crops that can thrive.

1. Extend your growing season 

  • Without a greenhouse: 

Outdoor gardening in Malta is largely restricted to the cooler months (October–April). During the hot summer, many plants either bolt or wilt, halting production entirely.

  • With a greenhouse: 

A ventilated and shaded greenhouse allows for year-round growing. With added cooling systems like automatic vents or shade cloths, even summer cultivation becomes possible, especially for heat-sensitive crops.

2- Grow a Wider Variety of Plants 

  • Without a Greenhouse

Maltese gardeners typically grow drought-tolerant vegetables such as:

Tomatoes

Peppers

Eggplants

Zucchini

Lettuce

Onions 

Peas

Berries

Olives

Artichokes

  • With a Greenhouse:

A greenhouse in Malta opens up opportunities to grow more delicate or exotic crops year-round, including:

Tomatoes

Cucumbers

Strawberries

Carrots 

Eggplants 

Corn

Leafy greens

Berries

Microgreens

Herbs

Peas 

Asian greens 

Radishes

Spring onions 

Microgreens 

Baby turnips

Broccoli 

Okra 



Atpakaļ uz emuāru