When to plant spinach in Honolulu
Honolulu is frost-free, so spinach's dates key off the local wet and dry seasons and monthly temperatures — not a frost date.
Step 1 · Sow
Direct sow outdoors
Jan 1 – Mar 3
Sow straight into warm, workable soil.
Step 2 · Harvest
Harvest window
Feb 10 – Apr 22
Picking runs until conditions turn against the crop.
Window
Days to maturity
40 – 50 d
From sowing to first pick.
Common questions
When can I sow spinach outdoors in Honolulu?
Direct-sow around early January (Jan 1–Mar 3) in Honolulu, based on its local frost dates. Confidence 56%.
When will spinach be ready to harvest in Honolulu?
Expect to harvest from around early February (Feb 10–Apr 22) in Honolulu, based on its local frost dates. Confidence 50%.
The rule of thumb
Honolulu never frosts, so timing is about heat and the wet/dry seasons, not frost. Sow spinach 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.