Kahului Vegetable Planting Calendar | Urban Farmer

Grow with confidence

Kahului Vegetable Planting Calendar

Use Kahului climate patterns to see this month’s garden tasks and crop-by-crop planting windows for the sunny central Maui lowlands between the West Maui Mountains and Haleakalā.

See What to Plant NowView Planting Dates
Official 2023 USDA Hawaii Plant Hardiness Zone Map
USDA Zones 12b–13aMost Kahului neighborhoods fall in USDA Zones 12b–13a
Frost uncommonTypical last spring frost: Frost uncommon
Frost uncommonTypical first fall frost: Frost uncommon
Cool season

Plant through winter

Broccoli, lettuce, peas, carrots, radishes and leafy greens perform best from fall through early spring.

Warm season

Use spring warmth

Grow warm-season vegetables through the mildest months, protect crops from intense summer heat and rain, and schedule cool crops mainly from fall through early spring.

Late summer

Restart the cool garden

Begin fall brassicas indoors and prepare beds for direct-sown roots and greens as temperatures moderate.

Local dates, crop by crop

Kahului Planting Dates

Choose a season and search for a crop to see when to start seeds indoors, move plants outside, direct sow and finish planting in the Kahului area.

Kahului–Maui CountyUSDA Zones 12b–13a · typical last frost Frost uncommon · typical first frost Frost uncommon

Spring planting

Planting Dates for Spring

Dates use Kahului valley-floor climate timing. Intense summer heat, dry air and nearby foothill elevation can change planting and harvest windows. Always check soil temperature and the 10-day forecast before planting.

Crop Start seeds indoors Transplant or plant outdoors Direct sow outdoors Last recommended planting Shop

Use the dates with confidence

How to Read This Calendar

1

Start indoors

Sow in trays under strong light. The window is timed so seedlings reach transplant size without becoming root-bound.

2

Transplant or plant

Harden seedlings off for about a week. Perennial crowns, sets and seed potatoes are included in this column.

3

Direct sow

Plant seed directly into prepared soil. Cool-season crops can begin before frost; heat-loving crops need warm soil.

4

Last planting

This is the practical end of the selected window—not a guarantee. Variety maturity and unusual weather can move it.

Kahului soil checkpoints

Let Soil Temperature Be the Final Check

Calendar dates start the conversation. A simple soil thermometer helps confirm that the seedbed is actually ready.

40–50°FPeas, spinach, radishes and other hardy crops
55–60°FBeans, corn and many moderately warm crops
65°F+Cucumbers, squash, melons, okra and other heat lovers
Current Kahului soil temperatureLoading…Modeled near 2½ inches deep
Checking current conditions

Use this modeled reading as a local reference, then confirm conditions in your own garden with a soil thermometer.

Weather data by Open-Meteo

Selected for the current planting window

Seeds to Plant Now

References: University of Hawaii at Mānoa Cooperative Extension vegetable gardening and tropical crop guidance; USDA 2023 Plant Hardiness Zone Map; and Open-Meteo modeled soil-temperature data.