When to plant basil in Perth
Basil is frost-tender, so every date keys off Perth's last spring frost.
Step 1 · Sow
Direct sow outdoors
Sep 19 – Oct 10
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Nov 18 – Dec 18
Picking runs until conditions turn against the crop.
Window
Days to maturity
60 – 90 d
From sowing to first pick.
Common questions
When can I sow basil outdoors in Perth?
Direct-sow around mid September (Sep 19–Oct 10) in Perth, based on its local frost dates. Confidence 80%.
When will basil be ready to harvest in Perth?
Expect to harvest from around mid November (Nov 18–Dec 18) in Perth, based on its local frost dates. Confidence 74%.
How long is the growing season in Perth?
Perth has roughly 365 frost-free days, which is enough time to grow basil to maturity outdoors.
The rule of thumb
Sow basil 6–8 weeks before your last spring frost; plant out 2–3 weeks after it. Every date on this page is derived from that rule and Perth's frost dates.
Confidence 82/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.