Zone 12 Planting Calendar: What to Plant and When

Zone 12 gardening runs on a clock most planting advice was never written for. Winter lows here sit around 50 to 60F, nothing freezes, and the ground stays workable in December the same way it does in June. What actually closes a planting window is heat, and in much of the zone the wet season that rides along with it, so the useful question is never how long until the last frost but which crops can take the next three months of weather. This Zone 12 planting calendar sets out what to plant in Zone 12 month by month, built around temperature and rainfall instead of frost dates.

Zone 12 at a glance

Zone 12 planting calendar

Because Zone 12 is frost-free, this calendar is built around temperature and moisture rather than frost dates. Heat-loving crops thrive through the warm months, while tender leafy greens and cool-season vegetables do best in your milder, often drier stretch. Use this Zone 12 planting schedule as your month-by-month map for what to plant in Zone 12.

Zone 12 planting schedule at a glance

The Zone 12 planting schedule is easiest to read as one long season with a hot middle. From roughly October through March, while nights are cooler and the air is drier, you start seeds indoors for tomatoes, peppers, and eggplant and set out lettuce, brassicas, and root crops. Transplants go out any month you like, since there is no frost to wait on, but the ones planted into the cool stretch establish fastest. Harvest never really stops, and the hottest months from about June through September belong to okra, southern peas, sweet potato, and tropical greens.

The pattern to notice is that cool-season crops such as lettuce, broccoli, cabbage, and root vegetables slot into the milder months from fall through early spring, while heat lovers such as okra, southern peas, sweet potato, eggplant, and melons carry the hottest stretch when nothing else wants to grow. During the peak of summer heat, many Zone 12 gardeners deliberately lighten their planting and lean on the toughest tropical crops.

The best crops for Zone 12

The vegetables that shine in Zone 12 are the ones built for heat and humidity. Because your zone never really cools down, heat tolerance matters far more than cold hardiness. Here are the Zone 12 vegetables, herbs, and flowers we recommend most, each linked to the seeds to start with.

Heat-loving vegetables

Okra, southern peas, sweet potato, eggplant, and hot peppers are the backbone of a summer Zone 12 garden because they keep producing when temperatures soar. For fruiting crops, reach for heat-set tomato seeds, pepper seeds, and cucumber seeds, and add melons and summer squash for sprawling summer harvests. Browse the full range in our vegetable seeds collection.

Cool-season greens for your mild months

From fall through early spring, your beds open up for tender crops. Grow lettuce seeds, kale seeds, chard, and other salad greens, plus quick roots like carrots and radishes, while nights are cooler. These are the crops that struggle in summer, so treat your mild season as their prime window.

Herbs and flowers that love the heat

Basil, lemongrass, and other warm-climate herb seeds thrive nearly year-round in Zone 12. For color and pollinators, heat-tough flower seeds such as zinnias, marigolds, and sunflowers hold up well through the summer and help draw in the bees your fruiting crops need.

When are the frost dates in Zone 12?

Here is the honest answer for Zone 12: in a typical year, there are no frost dates. Zone 12 is a frost-free zone with average winter lows of 50 to 60F, so both the "last spring frost" and "first fall frost" that shape most planting calendars simply do not apply. That is a gift, because it means you can garden in every month. It also means your planting decisions hinge on heat and rainfall instead.

Even so, your exact conditions depend on your specific location, elevation, and how close you are to the coast. To see the frost dates and season data pulled for your precise spot, enter your ZIP code in our interactive planting calendar tool. It gives you your exact local dates in seconds, which is the most reliable way to fine-tune this Zone 12 planting schedule to your yard.

The year-round growing rhythm in Zone 12

With no frost to plan around, the limiting factor in Zone 12 is heat, and across much of the zone the wet season that arrives with it. That flips the usual calendar on its head. In colder zones the cool months are dead time and summer is the main season. Here it is the reverse: the cooler, drier stretch is when lettuce, brassicas, carrots, and beets actually size up and when tomatoes and peppers set fruit properly, while the hottest, wettest months are the ones you plan your way through rather than plant your main crops into.

In practice the garden runs in two gears. In the cool season you start seeds indoors for tomatoes, peppers, and eggplant about 6 to 8 weeks before you want the transplants in the ground, which for most Zone 12 gardeners means sowing trays in November and December so the plants are well established before the heat builds. Then, as temperatures and rainfall climb, you hand the beds over to crops that genuinely enjoy those conditions. Drainage, afternoon shade, and steady picking matter more in that stretch than any date on a chart, and your own microclimate, elevation, and rainfall pattern will shift the months below by several weeks.

What does USDA Zone 12 mean?

USDA hardiness zones are based on the average coldest winter temperature in an area. Zone 12 means the average annual minimum temperature falls between 50 and 60F. Each zone covers a 10-degree band, and Zone 12 is one of the warmest, found in truly tropical and subtropical pockets of the United States such as parts of Hawaii, southern Florida, and Puerto Rico.

It is worth knowing exactly what this number tells you and what it does not. Your USDA zone describes winter cold hardiness, which matters most for perennials and shrubs that must survive the coldest night of the year. It does not, on its own, tell you your frost dates or how hot your summers get. In a frost-free zone like Zone 12, summer heat and the wet and dry seasons are the bigger drivers of what you can plant and when, which is why this calendar is organized around them.

Not in Zone 12? Find your zone

If your winters are a little cooler or warmer than described here, you may be in a neighboring zone. Check the Zone 11 planting calendar if your winters run slightly cooler, or the Zone 13 planting calendar, the warmest USDA zone of all, if you are in a truly tropical spot. And whichever zone you land in, remember to run your ZIP code through the planting calendar tool for your exact local dates.