Perth, WA · Autumn
What to sow, plant, and harvest in Perth across March, April, May, the full seasonal list, in the order an almanac would lay it out.
Months
March, April, May
Crops to sow
14
Seedlings to plant
12
Climate
Mediterranean/Temperate
Autumn in Perth is the underrated second planting window, brassicas, leafy greens, garlic, broad beans all go in as the heat eases. The city sits in mediterranean/temperate territory, winter lows around 9°C, summer highs around 35°C, and the autumn months (March, April, May) carry a recognisable rhythm that's worth knowing before you plant.
From seed in Perth this autumn: Tomato, Broccoli, Cauliflower, Kale, Spinach, Asian Greens, Carrot, Beetroot, Radish, Lettuce, Garlic, Broad Beans, Peas, Snow Peas. That's a long list, which is the upside of Perth's mediterranean/temperate conditions in autumn, direct-sowing into raised beds gives you the best germination and the strongest root systems for the season ahead.
As seedlings in Perth this autumn: Tomato seedlings, Lettuce, Silverbeet, Asian Greens, Bok Choy, Tomato, Broccoli, Cauliflower, Leek, Celery, Cabbage, Onion. Buying seedlings from a local nursery shortens the calendar by 4-8 weeks compared to seed, which matters most in Perth's shoulder windows.
Harvesting in Perth this autumn: Tomato, Capsicum, Eggplant, Cucumber (last), Beans, Sweet Potato, Beans (last), Lettuce, Silverbeet, Tomato (last), Broccoli (early), Asian Greens, Radish. The harvest peak runs across the season's middle month, when warm-season crops planted in the previous shoulder are coming into full production.
Perth's dry summers require drip irrigation or soaker hoses rather than overhead watering, conserve water and reduce fungal disease risk simultaneously. Unlike east coast cities, Perth's best tomato planting window is actually August-October for a summer harvest, with a second planting possible in late February. If you want the printable, see the full Perth planting calendar.
Perth's autumn suits raised beds for the simple reason that raised beds drain faster and let you control the bed mix, both of which matter when the season's weather extremes try to either drown or bake your crops. The raised bed calculator sizes the bed; the companion planting guide fills it out.
For the month-by-month read, see the full Perth planting calendar. To convert this season's list into an exact bed plan for your household, Plant Planner reads your postcode, your bed dimensions, and your family size and does the maths.
Sow from seed
Plant as seedlings
Harvest
In Perth's autumn (March, April, May), you can sow from seed: Tomato, Broccoli, Cauliflower, Kale, Spinach, Asian Greens, Carrot, Beetroot, Radish, Lettuce, Garlic, Broad Beans. From seedlings: Tomato seedlings, Lettuce, Silverbeet, Asian Greens, Bok Choy, Tomato, Broccoli, Cauliflower, Leek, Celery.
Across Perth's autumn months, you'll be harvesting: Tomato, Capsicum, Eggplant, Cucumber (last), Beans, Sweet Potato, Beans (last), Lettuce, Silverbeet, Tomato (last), Broccoli (early), Asian Greens, Radish.
The strongest autumn performer in Perth depends on what you already grow, but high-yield, low-effort choices include Tomato seedlings, Lettuce, Silverbeet. The full crop-by-crop guides are linked above.
Frost risk in Perth: Frost-free (coastal), rare light frosts in hills July-August. Frost is less of a concern in this season, heat protection and irrigation matter more.
Tell us your postcode and your bed size. We’ll lay it out, size it for your household, and email reminders the weekend before each task.
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