Hawaii · zones 12a–12a
When to plant bell peppers in Hawaii.
Sow or transplant between Jan 17 to Mar 10 in a typical year, keyed to Hawaii's median last frost around Jan 1. Dates below are state medians; your ZIP code shifts them by days to weeks.
The 2026 windows
Bell Peppers dates for a typical Hawaii season.
1 · Start indoors
Dec 6 to Jan 27
About 6 weeks before set-out. Warm spot, real light.
2 · Set out
Jan 17 to Mar 10
Keyed to the ~Jan 1 last frost. Sow 0.25" deep, 18" apart.
Harvest
~70 days later
~4 lb per plant over ~8 weeks.
Hawaii spans more than one climate: Zone 12 is the most common zone, but the state runs 12a to 12a. That's why the planner works from your ZIP code's frost dates, not your zone: mountain and coastal gardens in the same state can be three weeks apart.
Hawaii growing notes
A bell pepper bed that cannot drain fast after a downpour is the quickest way to lose this crop here.
Standing water, not cold, kills this crop
Phytophthora blight is on the pest list for peppers here, and it is a water mold, not a true fungus, which means it needs standing or saturated soil to get started rather than any particular temperature. A bed that pools water for even a few hours after a heavy rain gives it exactly what it needs. The test is to walk the bed an hour after a downpour and look for any low spot where water is still sitting on the surface; if you can find standing water, that is where the first plant will go down.
Raised beds or ridged rows fix most of this before it starts, giving water somewhere to go besides sitting against the stem. Watch for a dark, water-soaked lesion right at the soil line, or a single plant wilting hard while its neighbors look fine; that mismatch, one sick plant in a bed of healthy ones, is the tell. Pull the wilted plant and its root ball out completely rather than leaving it, since the organism persists in soil and spreads through splashing water to whatever is planted there next.
Bacterial leaf spot travels on wind-driven rain
Bacterial leaf spot is the other wet-weather problem on this list, and it spreads differently than the blight above: wind-driven rain and simply brushing against wet foliage while working the bed both move it from plant to plant. Small, dark spots with a water-soaked sheen show up first, sometimes with a pale yellow ring around them, usually on younger upper leaves rather than the oldest ones.
The single best habit against it costs nothing: stay out of the pepper bed while foliage is still wet from rain or morning dew, since handling wet plants is how a grower's own hands spread it down the row. Mulch under the plants cuts down on soil splashing onto lower leaves in the first place, which handles a good share of the exposure before it ever becomes a question of what to do with a sick plant.
One planting, then flea beetles and aphids to watch as it fills in
With no second window scheduled behind this one, set transplants 18 inches apart and expect around 4 pounds off a productive plant across a run that stretches about 70 days from transplant to first pick; there is no fall replant coming to bail out a slow start. Flea beetles show up earliest, while transplants are still small, chewing a scatter of tiny round holes through young leaves that can make a leaf look like it was hit with fine shot. A row cover over transplants for the first few weeks keeps them off without spraying anything on a plant this young.
Aphids move in later as the canopy fills out, clustering on new growth and the undersides of leaves near the top of the plant. A weekly look at that new growth catches them while the colonies are still small enough for a strong jet of water to knock back; wait until they are thick and heavy, and water alone will not be enough anymore.
In Hawaii: watch for
The pests that find bell peppers here.
With about 364 frost-free days, pepper, bell spends longer in the ground here than in most of the country, which widens the window in which aphids can find it. Scout weekly from midseason and act on the first signs.
Clusters on new growth, sticky leaves, curling tips. Green peach aphid spreads virus.
Organic fix: Blast with water, then insecticidal soap or neem.
Bacterial leaf spot
Small water-soaked spots that turn brown; badly spotted leaves drop.
Organic fix: Plant resistant varieties, avoid overhead watering, rotate out of nightshades.
Plant wilts and collapses at the soil line after a bed stays soggy.
Organic fix: Plant on raised ground for drainage; remove collapsed plants and do not replant there.
Tiny shot-hole pits peppering young leaves.
Organic fix: Row cover the seedlings; healthy transplants outgrow the damage.
Your season math: Hawaii gives bell peppers about 364 frost-free days, and it needs roughly 70 days to a first harvest. It's a one-planting crop, so time that single sowing well.
Planting bell peppers in Hawaii: questions
When should I plant bell peppers in Hawaii?+
In a typical Hawaii year, sow bell peppers or set out transplants between Jan 17 to Mar 10, keyed to the state's median last frost around Jan 1. Your exact dates shift with your ZIP code and microclimate.
When do I start bell peppers seeds indoors in Hawaii?+
Start seeds inside about 6 weeks before set-out: roughly Dec 6 to Jan 27 for a typical Hawaii season.
What USDA zone is Hawaii?+
Hawaii spans zones 12a–12a, mostly zone 12. But frost dates, not zones, set planting time. The free planner uses your ZIP code's actual frost dates.
How many bell peppers plants do I need?+
Depends who you're feeding. The crop page has exact counts per household size, or the free planner does the math for your family in about 60 seconds.