When to plant kale in Honolulu
Honolulu is frost-free, so kale's dates key off the local wet and dry seasons and monthly temperatures — not a frost date.
Step 1 · Sow
Direct sow outdoors
Dec 16 – Mar 2
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Feb 9 – May 16
Picking runs until conditions turn against the crop.
Window
Days to maturity
55 – 75 d
From sowing to first pick.
Common questions
When can I sow kale outdoors in Honolulu?
Direct-sow around mid December (Dec 16–Mar 2) in Honolulu, based on its local frost dates. Confidence 64%.
When will kale be ready to harvest in Honolulu?
Expect to harvest from around early February (Feb 9–May 16) in Honolulu, based on its local frost dates. Confidence 57%.
The rule of thumb
Honolulu never frosts, so timing is about heat and the wet/dry seasons, not frost. Sow kale into its window above and keep it watered. Every date here is modelled from Honolulu's monthly climate normals, not frost dates.
Confidence 67/100 · Curated · based on NASA POWER (modeled) 1991–2020 · modelled from climate normals.