USDA Zone 11 is frost-free year-round, with average winter lows of 40 to 50°F. There is no last spring frost and no first autumn frost to plan around, so Zone 11 gardeners plant by heat and by the wet and dry seasons instead of by frost dates. The heat and humidity that let tropical crops grow all year make cool-season crops much harder. Frost dates here are zone averages and vary by microclimate, elevation and year — check your local extension service for guidance for your exact spot.

Oregano is the pizza herb: warm, peppery, and at its best dried, when its flavour deepens. It is a hardy perennial that spreads steadily, wants full sun and sharp drainage, and will live for years in a sunny Zone 11 bed — as long as it is not drowned in wet soil. It is one of the easiest perennial herbs here, provided you respect its Mediterranean roots.

Zone 11 at a glance

USDA Zone 11 is frost-free year-round, with average winter lows of 40 to 50°F. Plant by the season: the coolest, driest months for cool-season crops, and the cooler part of the year for the best fruit set on heat lovers.

Detail Zone 11 guidance
Average winter low 40 to 50°F
Last spring frost None — frost-free year-round
First autumn frost None — frost-free year-round
Days to germination 7–14 days
Days to maturity 80–90 days
Sowing both
Best planting window Year-round; best October to February, in full sun with sharp drainage
Harvest 80–90 days after sowing/transplanting
Sun full sun
Soil pH 6.0–8.0
Spacing 12–18 inches
Water needs low
Cold tolerance hardy

When to plant oregano in Zone 11

Plant oregano any time of year in Zone 11, but the best time is October to February, in the cooler, drier months, so plants can establish before the wettest weather. Seeds germinate in 7–14 days and plants take 80–90 days to reach a first light harvest, though oregano is a long-term perennial that is far more productive from its second year. Zone 11 is frost-free, so there is no last frost date — plant by the dry season, and check your local extension service for your area.

Work by the season rather than by frost dates: the planting calendar hub gives the Zone 11 picture month by month, and the month guide for October in Zone 11 shows what else is happening at planting time. The harvest date calculator can turn your sowing date into a harvest window.

Starting oregano in Zone 11

Oregano can be started indoors or direct sown, and both work, though nursery plants and divisions are faster. Sow seed on the surface of moist compost, barely covering it, keep it moist for the 7–14 days to germination, and give seedlings strong light. Space plants 12–18 inches apart — oregano spreads, and a single plant can cover a good patch of bed in a season. Harden indoor-started plants off for a week before they go out.

Soil, spacing, sun and water

Oregano grows best in full sun, in soil with a pH of 6.0–8.0, spaced 12–18 inches apart. Oregano needs full sun and well-drained soil — it tolerates alkaline soil and even poor soil, and too much fertiliser makes soft growth with weak flavour. In Zone 11, drainage is still the key: dig in grit or perlite, use a raised bed where rain is heavy, and use gravel mulch rather than bark. Water young plants until established, then water only in long dry spells. Oregano needs low water: water deeply when the top inch or two of soil feels dry, rather than sprinkling lightly every day, and water at the base in the morning so leaves dry before night. Mulch helps hold moisture.

Companion planting

Good companions for oregano include tomatoes, peppers, marigolds, cabbage. The companion planting finder can suggest combinations for your whole garden. Rotate crops each year and avoid planting where the same family (Lamiaceae) grew last year. A related crop to plan alongside is rosemary, which shares the Zone 11 calendar, so the two guides work well together.

Pests and problems

The common pests and problems to watch for with oregano are aphids, spider mites, whiteflies. Aphids gather on young tips and wash off with water. Spider mites appear in hot, dry weather, so keep plants watered at the base. Whiteflies are present year-round in Zone 11's warmth. Root rot from wet soil is the bigger risk, so give oregano sharp drainage and space plants widely for airflow. Oregano is generally tough, and its strong scent puts off many pests on its own. Inspect plants regularly, especially leaf undersides, and act early: hand-pick larger pests, wash aphids off with water, and remove badly affected leaves. Healthy plants in the right soil and spacing resist pests better than stressed ones. If you are unsure what you are looking at, the pest identifier helper can narrow it down.

Harvest and storage

Harvest oregano once plants are established, about 80–90 days after sowing, by snipping sprigs as needed — the flavour is best just before flowering, so cut plants back hard then and dry the harvest. Oregano is one of the few herbs that tastes better dried than fresh: hang small bunches upside down in a shady, airy place, strip the leaves into a jar, and store for months. Cut plants back in the cool season to keep them compact, and divide crowded clumps every few years.

Frequently asked questions

When should I plant oregano in Zone 11?

Any time of year, but October to February is best, so plants establish before the wettest weather. Zone 11 is frost-free year-round. Check your local extension service for your area.

How long does oregano take to grow in Zone 11?

Seeds germinate in 7–14 days and plants take 80–90 days to reach a first light harvest. It is a perennial, far more productive from its second year.

Is dried or fresh oregano better?

Dried, unusually for a herb: oregano's flavour deepens when dried. Hang bunches in a shady, airy place and store the stripped leaves in a jar.

What soil and spacing does oregano need in Zone 11?

Full sun, well-drained soil with a pH of 6.0–8.0, spaced 12–18 inches apart, with low water and sharp drainage.