When should I plant cucumbers in Hawaii?

In Hawaii, cucumbers is typically planted between January 15 and February 19 (earliest January 8, latest March 11). Wait for soil temperature at 2-inch depth to reach 60°F.

What USDA hardiness zone is Hawaii?

Hawaii has a dominant USDA hardiness zone of 11a, with a range from 9a to 13a. Last frost date averages around January 1 and first fall frost around December 31, giving a typical 365-day growing season.

What soil temperature does cucumbers need to germinate?

Cucumbers requires a minimum soil temperature of 60°F at 2-inch depth for reliable germination. Optimal germination occurs at 65–85°F.

How long does cucumbers take to mature?

Cucumbers typically reaches maturity in 50–70 days, depending on variety. Direct seed once soil is reliably warm. Trellising significantly improves yield and reduces disease pressure.

State × crop calendar

Cucumbers planting in Hawaii.

Secondary cropZone 11a365-day seasonLast frost January 1VegetableFrost Sensitive

Cucumbers planting in Hawaii is shaped by the state's 11a dominant hardiness zone, last frost date around January 1, and a 365-day growing season. Cucumbers is grown in Hawaii but is not a dominant crop — works for home gardens, food plots, and some commercial production.

Planting dates on this page are climatological estimates from USDA frost-date norms and zone-typical planting offsets. Verify against University of Hawaii College of Tropical Agriculture for variety- and county-specific guidance.

Planting calendar — 2026

Cucumbers · Hawaii · planting calendar

Ideal windowEarliest / latest tailsFrost zone

Planting windows shift earlier in southern parts of the state and later in northern parts. Use last frost date in your specific county as the reference.

Planting windows

Spring planting

Cucumbers

Earliest

January 8

Ideal start

January 15

Ideal end

February 19

Latest

March 11

Soil-temp triggerDirect seed when soil reaches 60°F at 2-inch depth. Cool soils slow germination dramatically.

Harvest window

Typical start

March 5

Typical end

March 25

Harvest timing varies with planting date and seasonal weather — these dates are typical for the ideal planting window.

Growing notes

Cucumbers can be successfully grown in Hawaii with attention to variety selection. The state's 365-day growing season requires choosing varieties appropriate for the growing window.

Cucumbers is grown in Hawaii but is not a dominant crop — works for home gardens, food plots, and some commercial production.

Agronomy reference

Soil-temp minimum

60°F

Soil-temp optimum

65–85°F

Days to maturity

50–70

Water (in/wk)

1–2"

Soil pH

6–7

Nitrogen demand

moderate

Direct seed once soil is reliably warm. Trellising significantly improves yield and reduces disease pressure.

Common pests to watch

Cucumber beetles (striped and spotted)
Squash bugs
Pickleworm

Pest pressure varies by region and year. Confirm current outbreaks with University of Hawaii College of Tropical Agriculture.

Common diseases

Powdery mildew
Downy mildew
Bacterial wilt

Resistance varieties shift each year. Check the current variety trial report for your state.

Variety selection

Cucumbers varieties for Hawaii live with your extension service.

Variety performance is micro-regional and changes with each year’s trial cycle. We don’t republish variety lists — instead, we point directly at the source.

University of Hawaii College of Tropical Agriculture →

Search the extension site for “cucumbersvariety trial” or “recommended cucumbers varieties” to find the current report.

Yield varies significantly by variety, soil, fertility, and management. Consult your state extension service for variety performance trials in your region.

Cucumbers timing. Live alerts.

Bield: Farm ties weather and soil-temperature stations in your county to crop planting thresholds — get notified the day soil temp clears your target window.

Download Bield: Farm

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