Home / Guides / Regional Calendars, Climate & Data
Regional Calendars, Climate & DataMediterranean Climate Planting Calendar
Mediterranean climates give mild, wet winters and warm, dry summers. The planting calendar follows rainfall and heat more than frost.
Key points
- Think in two windows: fall to spring for cool crops, spring to summer for warm crops.
- Dry summers make irrigation planning the first task.
- Frost is light but not absent, so keep cover available.
- Use your own records to tune the calendar.
What is a Mediterranean climate?
A Mediterranean climate is marked by wet winters, dry summers and mild temperatures, with limited freezing in many areas. It occurs in coastal California and parts of Oregon, in central Chile, around the Mediterranean Sea, in southwestern Australia and in parts of South Africa.
Within that pattern, local conditions vary. Coastal sites are cooler and foggier, inland sites hotter and drier, and elevation changes frost risk. Begin with your own weather station and your own site.
Many gardeners new to these climates plant on a northern calendar and wonder why spring crops bolt early or summer crops stall. The difference is that growth here is driven by rainfall and heat more than by frost. Once you adapt to that rhythm, the calendar makes sense.
How does the year divide into growing seasons?
Cool-season crops grow in the wet, mild months, often planted in fall. Warm-season crops are planted after the last frost in spring and grown on irrigation through the dry summer. The calendar has two main windows, with a break during the hottest part of summer in many inland areas.
Fall planting is especially valuable, because soil is warm and rain arrives to help seedlings establish. Check your state extension planting guide for the range for your area.
Cover crops belong in this rhythm as well. A fall sowing grows through the wet months and is turned under or cut before spring planting, adding organic matter. Use species and timing recommended by your extension office, and confirm local rules on irrigation for cover crops where water is limited.
- Fall: greens, roots, brassicas, onions, garlic, cover crops
- Spring: tomatoes, peppers, squash, beans
- Summer: heat-tolerant crops with irrigation
How do you handle the dry summer?
Without summer rain, water supply is the main limit on warm-season crops. Plan drip irrigation, mulch and soil moisture checks before planting. Deep, less frequent watering encourages deeper roots in most vegetable crops.
Follow local water rules, which can tighten in drought. Choose crops and varieties that tolerate heat, and shade tender seedlings during heat waves.
Mulch is one of the most effective tools in a dry summer. A layer of organic mulch cuts evaporation, keeps roots cooler and suppresses weeds. Keep mulch a short distance from stems to reduce rot, and refresh it as it breaks down.
What about frost and cold snaps?
Frost is light or occasional in many Mediterranean areas, but cold snaps still damage sensitive crops such as citrus, tomatoes and peppers. Keep frost cloth ready during winter and early spring.
The USDA Plant Hardiness Zone Map describes average winter minimum temperatures and is useful for perennial selection. It does not give frost dates or planting dates, so rely on station data and your own records for annual crops.
How should you use the rainy season?
Winter rain can saturate soil and delay field work. Raised beds, ridges and cover crops reduce erosion and compaction. Avoid working wet soil, which damages structure.
Cover crops sown in fall protect soil during heavy rain and add organic matter. Choose species and seeding times recommended by your extension office, and consult a soil test for fertility decisions. Nutrient management rules vary by state.
What do you plant in fall versus spring?
Fall plantings of garlic, onions, peas, brassicas and lettuce grow slowly through the cool season and reward patience in spring. Spring plantings of tomatoes, peppers and squash race the heat and dry season.
Succession planting every few weeks keeps harvests steady. Pest and disease pressure shifts with the season, so identify problems and ask extension for current guidance. Any pesticide must follow the label, pre-harvest intervals and pollinator protection.
How do you build a Mediterranean calendar?
For example, if your last spring frost usually falls in early March, you might set out warm-season transplants a couple of weeks later, then plan a fall planting that begins once the extreme summer heat breaks. This is a worked example of the method, not a recommended date.
Record rain, heat spells, frost nights and planting dates. After a few seasons you can see how your own microclimate compares with the published averages. Confirm local details with your county extension office.
Share what you learn with neighbors. Microclimates in Mediterranean regions vary within a few miles, and local notes are valuable.
Sources and further reading
Last reviewed: November 2026. Educational information, ranges only. Confirm timing with your county extension office.