When to Plant Cucumber in USDA Zone 5b
Top priorities for Zone 5b gardeners in May
We've pulled the most time-sensitive tasks for Zone 5b this May and put them front and centre. Tackle them in order.
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Transplant cucumber outside
Pinch off the lowest leaves on each seedling before you plant — it reduces water loss while the roots catch up.
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Plant cucumber from seed, right in the garden
These tolerate cool soil, so you're not gambling by sowing now.
A few tasks this May that'll pay off in June
- Starting indoors: cucumber
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.
In Zone 5b, the average last spring frost is around April 18 and the first fall frost is around October 13, giving you a growing season of approximately 178 days.
Cucumber Planting Timeline — Zone 5b
Where Is USDA Zone 5b?
The map below highlights the states that contain Zone 5b. Click any state to see the Cucumber planting schedule for that location.
Cucumber Planting Calendar — Zone 5b
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 14 | Mar 14 – Mar 28 |
| Transplant Outdoors | May 2 | May 2 – May 16 |
| Direct Sow | April 25 | Apr 25 – May 16 |
| Harvest | June 27 | Jun 27 – Aug 22 |
Plant 0.5" deep · 24" apart · Rows 48" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Start Indoors |
| April | Direct Sow |
| May | Transplant Outdoors Direct Sow |
| June | Harvest |
| July | Harvest |
| August | Harvest |
| September | — |
| October | — |
| November | — |
| December | — |
Free Zone 5b Planting Calendar PDF
Know exactly when to plant every crop in your zone. Get a printable month-by-month calendar customized for Zone 5b with start dates, transplant windows, and harvest times.
Growing Conditions
Sun
Full Sun (6-8+ hours)
💧 Water
High — keep soil consistently moist
Days to Maturity
50–70 days
Soil pH
6 – 7
Zone Temperature Range
°F to °F average annual minimum
Growing Season
178 days (Zone average)
Planting Specifications
| Planting Depth | 0.5 inches |
| Plant Spacing | 24 inches apart |
| Row Spacing | 48 inches between rows |
Succession Planting Cucumber in Zone
Sow every 5.7 weeks for continuous harvest throughout the season.
Growing Tips for Cucumber in Zone
Zone has a short growing season (~178 days). Start Cucumber indoors early and use season-extension techniques like row covers and cold frames.
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
The Gardener's Encyclopedia to Companion Planting
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- Proven pairings for 200+ vegetables, herbs, flowers, and fruits
- Full seed-starting + planting schedule with timing and spacing
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Saving Cucumber Seeds
Recommended for Your Garden
Start seeds indoors with reusable cell trays and humidity domes.
Test your soil pH, nitrogen, phosphorus, and potassium levels before planting.
Keep your garden organized with durable, weather-resistant plant labels.
Related Plants
Cucumber in Other Zones
Cucumber by State
- Alabama
- Alaska
- Arizona
- Arkansas
- California
- Colorado
- Connecticut
- Delaware
- Florida
- Georgia
- Hawaii
- Idaho
- Illinois
- Indiana
- Iowa
- Kansas
- Kentucky
- Louisiana
- Maine
- Maryland
- Massachusetts
- Michigan
- Minnesota
- Mississippi
- Missouri
- Montana
- Nebraska
- Nevada
- New Hampshire
- New Jersey
- New Mexico
- New York
- North Carolina
- North Dakota
- Ohio
- Oklahoma
- Oregon
- Pennsylvania
- Rhode Island
- South Carolina
- South Dakota
- Tennessee
- Texas
- Utah
- Vermont
- Virginia
- Washington
- West Virginia
- Wisconsin
- Wyoming
Frequently Asked Questions
When should I plant Cucumber in Zone 5b?
In Zone 5b, plan your Cucumber planting around the average last frost date of April 18. Start seeds indoors around March 14. Direct sow outdoors around April 25. Transplant seedlings around May 2.
Can Cucumber grow in Zone 5b?
Yes, Cucumber can grow well in Zone 5b, hardy in USDA zones 3a through 11b. Zone 5b has a growing season of approximately 178 days, which is sufficient for Cucumber (50-70 days to maturity).
When can I harvest Cucumber in Zone 5b?
In Zone 5b, expect to harvest Cucumber from June 27 – August 22. Cucumber takes 50-70 days from planting to harvest.
What is the last frost date for Zone 5b?
The average last spring frost in Zone 5b is around April 18, and the first fall frost is around October 13. This gives a growing season of approximately 178 days. These are 50% probability dates — actual frost dates vary year to year.
What should I plant next to Cucumber?
Good companion plants for Cucumber include Corn, Peas, Radish, Sunflower. These companions can help with pest control, pollination, and nutrient sharing.
Your Free Printable Garden Planner
A 24-page printable planner tailored to your zone. Planting dates, monthly task lists, harvest log, seed inventory, and succession charts — everything you need to plan a full season.