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When to Plant Cucumber in Valdez-Cordova, AK

Valdez-Cordova, Alaska Zone 5b May

May to-do list for Valdez-Cordova, Alaska

May rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Valdez-Cordova, Alaska.

Avg. last frost May 12
Avg. first frost October 5
Soil temp (4") 47°F
Watering High
Pest pressure Low
Daylight 17.1 hrs
  1. Transplant cucumber outside

    Plant tomatoes deep — bury the stem up to the first true leaves to grow extra roots. Everything else goes in at the same depth it grew in the tray.

  2. Put cucumber seeds straight in the ground

    Rake a smooth bed, make a shallow furrow, drop seeds at the spacing on the packet, water gently, walk away.

Coming up in June — start thinking about
  • Starting indoors: cucumber

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Cucumbers are a warm-season vine crop available in slicing and pickling varieties. They are prolific producers when given warmth, moisture, and a trellis to climb.

Valdez-Cordova, Alaska is in USDA Zone 5b. The average last spring frost is May 12 and the first fall frost is October 5, giving you a growing season of approximately 146 days.

At an elevation of 2,888 feet, Valdez-Cordova receives approximately 38.3 inches of rainfall annually with predominantly silt loam soil. Summer highs average 66°F, so choose short-season varieties of Cucumber to ensure they mature before fall.

Valdez-Cordova, AK (Zone 5b) Short season
146 days
Last Spring Frost May 12
146 growing days
First Fall Frost October 5

Valdez-Cordova Soil Profile

Soil Type

Silt Loam

Soil pH

5-6.8

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (14 days to spare)
Start indoors: Mar 26 Transplant: May 14 🍅 Harvest: Jul 9 – Sep 3
Recommended (50%) ✓ Fits season (20 days to spare)
Start indoors: Apr 7 Transplant: May 26 🍅 Harvest: Jul 21 – Sep 15
Safe Start (90%) ✓ Fits season (21 days to spare)
Start indoors: Apr 30 Transplant: Jun 18 🍅 Harvest: Aug 13 – Oct 8

Percentages indicate frost risk at transplant. The 70% safe window means there is a 30% chance of frost after transplant — suitable for cold-hardy crops or gardeners with frost protection. The 90% safe window is best for tender plants.

Soil Compatibility in Valdez-Cordova

How your county's soil matches Cucumber's growing requirements.

Soil pH

Your soil pH (5.0–6.8) is more acidic than Cucumber prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

The silt loam soil in Valdez-Cordova is excellent for Cucumber — good drainage, moisture retention, and nutrient holding capacity.

Drainage

Drainage is adequate for Cucumber.

Organic Matter

Organic matter is excellent (6.2%) — Cucumber will thrive.

How to Plant Cucumber

0.5"
Planting Depth
24"
Between Plants
48"
Between Rows

Succession Planting Cucumber

3
successive plantings in your 146-day season

Sow every 5.7 weeks. Last sowing by Jul 27 to harvest before frost.

Plant Water Budget

Plant needs
1.5″/week
Rainfall provides
1.1″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

Monthly Watering Guide for Cucumber

Cucumber needs approximately 1.5 inches of water per week (6.5" per month). Here's how your county's rainfall compares month by month.

Month Cucumber Needs Rainfall You Supplement Action
Jan 1.9" 0" ❄️ Dormant
Feb 1.8" 0" ❄️ Dormant
Mar 1.5" 0" ❄️ Dormant
Apr 1.2" 0" ❄️ Dormant
May 6.5" 1.5" 5" 🚿 Regular watering
Jun 6.5" 2.9" 3.6" 🚿 Regular watering
Jul 6.5" 5.3" 1.2" 💧 Light watering
Aug 6.5" 5.5" 1" 💧 Light watering
Sep 6.5" 6" 0.5" 💧 Light watering
Oct 6.5" 5.3" 1.2" 💧 Light watering
Nov 2.9" 0" ❄️ Dormant
Dec 2.4" 0" ❄️ Dormant

Water needs are for active growing months only (May–Oct in Valdez-Cordova). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Cucumber Heat Requirements (GDD)

What are Growing Degree Days (GDD)?

Growing Degree Days measure the total warmth your plants receive during the growing season. Think of it as a "heat bank" — every day above 50°F deposits warmth that helps your plants grow.

Each plant needs a certain amount of accumulated heat to mature. If your county provides more GDD than the plant needs, it's a great fit. If it's close, you may want to choose faster-maturing varieties or start seeds indoors to get a head start.

Cucumber needs ~0 GDD — county provides 0 GDD May not mature

Cucumber Planting Timeline — Valdez-Cordova, AK

Cucumber Planting Calendar

Activity When Date Range
Start Indoors April 7 Apr 7 – Apr 21
Transplant Outdoors May 26 May 26 – Jun 9
Direct Sow May 19 May 19 – Jun 9
Harvest July 21 Jul 21 – Sep 15

Plant 0.5" deep · 24" apart · Rows 48" apart

Month-by-Month Timeline

MonthActivities
January
February
March
April Start Indoors
May Transplant Outdoors Direct Sow
June Transplant Outdoors Direct Sow
July Harvest
August Harvest
September Harvest
October
November
December

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.5"/week · Natural rainfall sufficient

📅 Days to Maturity

50–70 days

🧪 Soil pH

Needs 6–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 5b

📆 Growing Season

146 days in Valdez-Cordova

Growing Tips for Cucumber in Valdez-Cordova

Direct sow Cucumber outdoors after May 12 in Valdez-Cordova when soil has warmed and frost danger has passed.

Common pests for Cucumber in this region include squash vine borer and cucumber beetles. Use row covers early in the season and inspect plants weekly.

General growing tips

Direct sow after last frost or start indoors 3 weeks early. Provide a trellis for vining types to save space and improve air circulation. Harvest frequently to encourage production.

Companion Planting

Good Companions

Avoid Planting Near

  • Potatoes
  • Sage

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Cucumber in Valdez-Cordova, AK?

Valdez-Cordova is in Zone 5b with an average last frost of May 12. Plan your Cucumber planting based on this frost date — see the calendar above for exact timing.

What planting zone is Valdez-Cordova, AK?

Valdez-Cordova, Alaska is in USDA Hardiness Zone 5b. The average last spring frost is May 12 and first fall frost is October 5.

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Your Valdez-Cordova Garden Planner — Free

A 24-page printable planner built for Valdez-Cordova (Zone 5b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

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Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Valdez-Cordova, AK. Local conditions may vary. Last updated: May 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.