GrowCalAustralia

Perth, WA · Mediterranean

What to plant in Perth in December

A data-backed december starting point for the Perth & Swan Coastal Plain growing profile. GrowCal uses this profile to resolve the baseline schedule for each plant.

What to plant in December

These plants have dated GrowCal schedule data for this regional profile and include a sow or plant-out action in December. Select a plant name to read its broader Australian guide.

Basil

Sow seeds · Plant out

Sow into punnets once frost has passed and pinch out flower buds to keep leaves coming. This is a december action in the resolved GrowCal schedule.

Beetroot

Sow seeds

Thin seedlings early — each seed cluster produces several plants. This is a december action in the resolved GrowCal schedule.

Chives

Sow seeds · Plant out

Plant in clumps and cut leaves at the base; divide established clumps to make more. This is a december action in the resolved GrowCal schedule.

Coriander

Sow seeds · Plant out

Sow direct into cool-season beds and keep it moist; heat and root disturbance make it bolt. This is a december action in the resolved GrowCal schedule.

Cucumber

Sow seeds

Train up a trellis for straighter fruit and far less mildew. This is a december action in the resolved GrowCal schedule.

Dill

Sow seeds · Plant out

Sow direct in a sheltered sunny spot; it runs to seed quickly, so keep sowing. This is a december action in the resolved GrowCal schedule.

Eggplant

Sow seeds

Loves heat; pick while the skin is still glossy. This is a december action in the resolved GrowCal schedule.

Fennel

Sow seeds · Plant out · Feed & fertilise

Grown for the swollen bulb; blanch it late to keep the flavour sweet. This is a december action in the resolved GrowCal schedule.

Lemongrass

Plant out

Full sun and moist, well-drained soil; it is frost tender, so pot it in cold districts. This is a december action in the resolved GrowCal schedule.

Mint

Sow seeds · Plant out

Plant into a pot or a contained bed — mint runs, and it prefers moist soil in light shade. This is a december action in the resolved GrowCal schedule.

Oregano

Sow seeds · Plant out

Keep it on the dry side and harvest often — unpicked plants turn hard and woody. This is a december action in the resolved GrowCal schedule.

Parsley

Sow seeds · Plant out

Direct sow or plant seedlings; cut outer stems at the base so the plant keeps reshooting. This is a december action in the resolved GrowCal schedule.

Pumpkin

Sow seeds

Give it room to run, and hand-pollinate early in the morning for reliable fruit. This is a december action in the resolved GrowCal schedule.

Rockmelon

Plant out · Feed & fertilise

Frost sensitive and hungry for sun — give it six hours a day and room to spread. This is a december action in the resolved GrowCal schedule.

Rosemary

Plant out

Give it hot, dry, well-drained conditions; in the tropics and subtropics keep it in a pot. This is a december action in the resolved GrowCal schedule.

Silverbeet

Sow seeds

Pick the outer leaves and one planting will feed you for most of the year. This is a december action in the resolved GrowCal schedule.

Sweet Potato

Plant out · Feed & fertilise

Start from a shop-bought tuber or a cutting; it will cover a lot of ground. This is a december action in the resolved GrowCal schedule.

Tomato

Plant out

Plant deeply, stake early and water at the base to keep leaves dry. This is a december action in the resolved GrowCal schedule.

Watermelon

Plant out · Feed & fertilise

Sow into warm soil with room to run, and ease off water once the fruit sizes up. This is a december action in the resolved GrowCal schedule.

December garden jobs

GrowCal also surfaces maintenance and harvest actions when the resolved schedule lists them for this month.

Vegetables

Herbs

Fruit & Berries

Fruit Trees & Citrus

  • LemonFeed & fertilise · Pest & disease check
  • LimeFeed & fertilise · Pest & disease check
  • MandarinFeed & fertilise · Pest & disease check
  • OrangeFeed & fertilise · Pest & disease check

Why timing varies locally

Perth is not one uniform growing environment. This page uses the mapped Perth & Swan Coastal Plain profile, while a nearby locality may resolve differently. Frost pockets, shade, soil, aspect and the variety you grow can all change what is sensible in a particular garden. Treat these dates as a prompt to look at your garden, not a rigid instruction.

Read the GrowCal data & methodology for sources, validation status and limitations.

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