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When to Plant Cucumber in Herkimer County, NY

Herkimer County, New York Zone 5b May

What to do in May

Here's what deserves your attention in Herkimer County, New York this month. Everything below is tailored to Zone 5b and timed around your local frost dates.

Avg. last frost May 15
Avg. first frost September 30
Soil temp (4") 56°F
Watering Low
Pest pressure Low
Daylight 14.5 hrs
  1. Plant out cucumber

    Bring a watering can to the bed. Each transplant gets a drink the moment it's in the ground, not ten minutes later.

  2. Outdoor sowing time: cucumber

    Sow every 2 weeks for a continuous harvest. A single big planting means a single big glut.

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.

Herkimer County, New York is in USDA Zone 5b. The average last spring frost is May 15 and the first fall frost is September 30, giving you a growing season of approximately 138 days.

At an elevation of 160 feet, Herkimer County receives approximately 48.9 inches of rainfall annually with predominantly silt loam soil. Summer highs average 82°F, so choose short-season varieties of Cucumber to ensure they mature before fall.

Herkimer County, NY (Zone 5b) Short season
138 days
Last Spring Frost May 15
138 growing days
First Fall Frost September 30

Herkimer County Soil Profile

Soil Type

Silt Loam

Soil pH

5.1-6.4

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (6 days to spare)
Start indoors: Apr 6 Transplant: May 25 🍅 Harvest: Jul 20 – Sep 14
Recommended (50%) ✓ Fits season (12 days to spare)
Start indoors: Apr 10 Transplant: May 29 🍅 Harvest: Jul 24 – Sep 18
Safe Start (90%) ✓ Fits season (10 days to spare)
Start indoors: Apr 26 Transplant: Jun 14 🍅 Harvest: Aug 9 – Oct 4

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 Herkimer County

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

Soil pH

Your soil pH (5.1–6.4) is more acidic than Cucumber prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

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

Drainage

Drainage is adequate for Cucumber.

Organic Matter

Organic matter is moderate (3.7%). Annual compost additions will help Cucumber.

How to Plant Cucumber

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

Succession Planting Cucumber

3
successive plantings in your 138-day season

Sow every 5.7 weeks. Last sowing by Jul 22 to harvest before frost.

Plant Water Budget

Plant needs
1.5″/week
Rainfall provides
1.5″/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 3.7" 0" ❄️ Dormant
Feb 3.7" 0" ❄️ Dormant
Mar 3.8" 0" ❄️ Dormant
Apr 4.7" 0" ❄️ Dormant
May 6.5" 5.1" 1.4" 💧 Light watering
Jun 6.5" 4.7" 1.8" 💧 Light watering
Jul 6.5" 4.3" 2.2" 💧 Light watering
Aug 6.5" 4.3" 2.2" 💧 Light watering
Sep 6.5" 3.8" 2.7" 💧 Light watering
Oct 3.5" 0" ❄️ Dormant
Nov 3.5" 0" ❄️ Dormant
Dec 3.9" 0" ❄️ Dormant

Water needs are for active growing months only (May–Sep in Herkimer County). 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 ~690 GDD — county provides 1,587 GDD Excellent fit

Cucumber Planting Timeline — Herkimer County, NY

Cucumber Planting Calendar

Activity When Date Range
Start Indoors April 10 Apr 10 – Apr 24
Transplant Outdoors May 29 May 29 – Jun 12
Direct Sow May 22 May 22 – Jun 12
Harvest July 24 Jul 24 – Sep 18

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

138 days in Herkimer County

Growing Tips for Cucumber in Herkimer County

Direct sow Cucumber outdoors after May 15 in Herkimer County 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 Herkimer County, NY?

Herkimer County is in Zone 5b with an average last frost of May 15. Plan your Cucumber planting based on this frost date — see the calendar above for exact timing.

What planting zone is Herkimer County, NY?

Herkimer County, New York is in USDA Hardiness Zone 5b. The average last spring frost is May 15 and first fall frost is September 30.

🌱

Your Herkimer County Garden Planner — Free

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

Instant PDF download. No spam, unsubscribe any time.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Herkimer County, NY. 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.