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When to Plant Cucumber in Monroe County, FL

Monroe County, Florida Zone 11b May

Top priorities for Monroe County, Florida gardeners in May

May is a pivotal month for Monroe County, Florida gardens. Focus on these tasks first and you'll set up the rest of the season for success.

Avg. last frost January 22
Soil temp (4") 81°F
Watering Moderate
Pest pressure High
Daylight 13.2 hrs
  1. Bring in the cucumber

    Taste as you pick. The first ripe produce is the best feedback loop you'll get all season.

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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.

Monroe County, Florida is in USDA Zone 11b. The average last spring frost is January 22 and the first fall frost is April 15, giving you a growing season of approximately 83 days.

At an elevation of 169 feet, Monroe County receives approximately 55.6 inches of rainfall annually with predominantly sand soil. Summer highs average 93°F, providing good warmth for Cucumber during the growing season. Sandy soil warms quickly in spring — great for early planting — but Cucumber will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Cucumber root diseases.

Monroe County, FL (Zone 11b) Very short season
83 days
Last Spring Frost January 22
83 growing days
First Fall Frost April 15

Monroe County Soil Profile

Soil Type

Sand

Soil pH

4.8-5.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (152 days to spare)
Start indoors: Dec 20 Transplant: Jan 24 🍅 Harvest: Mar 21 – May 16
Recommended (50%) ✓ Fits season (147 days to spare)
Start indoors: Dec 25 Transplant: Jan 29 🍅 Harvest: Mar 26 – May 21
Safe Start (90%) ✓ Fits season (94 days to spare)
Start indoors: Feb 16 Transplant: Mar 23 🍅 Harvest: May 18 – Jul 13

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 Monroe County

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

Soil pH

Your soil pH (4.8–5.7) is more acidic than Cucumber prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

Sandy soil in Monroe County warms quickly in spring but drains fast. Cucumber will need more frequent watering and regular compost additions to retain nutrients.

Drainage

Cucumber is a heavy drinker but your soil drains very quickly. Mulch heavily and consider drip irrigation.

Organic Matter

Organic matter is low (1.3%). Add 2-3 inches of compost before planting Cucumber.

How to Plant Cucumber

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

Plant Water Budget

Plant needs
1.5″/week
Rainfall provides
0.6″/week
You supply
1.3″/week
Watering frequency 2-3 times/week
Season total 4,256 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 6.5" 2.3" 4.2" 🚿 Regular watering
Feb 6.5" 2.7" 3.8" 🚿 Regular watering
Mar 6.5" 3.8" 2.7" 💧 Light watering
Apr 6.5" 2.5" 4" 🚿 Regular watering
May 6.5" 3.2" 3.3" 🚿 Regular watering
Jun 6.5" 7.1" 0" ✅ Rainfall sufficient
Jul 6.5" 8.2" 0" ✅ Rainfall sufficient
Aug 6.5" 8.7" 0" ✅ Rainfall sufficient
Sep 6.5" 7.7" 0" ✅ Rainfall sufficient
Oct 6.5" 4.8" 1.7" 💧 Light watering
Nov 2.2" 0" ❄️ Dormant
Dec 2.5" 0" ❄️ Dormant

Water needs are for active growing months only (Jan–Oct in Monroe 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 ~1,185 GDD — county provides 7,208 GDD Excellent fit

Cucumber Planting Timeline — Monroe County, FL

Cucumber Planting Calendar

Activity When Date Range
Start Indoors December 25 Dec 25 – Jan 8
Transplant Outdoors January 29 Jan 29 – Feb 12
Direct Sow January 22 Jan 22 – Feb 12
Harvest March 26 Mar 26 – May 21

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1.5"/week · 2-3 times/week

📅 Days to Maturity

50–70 days

🧪 Soil pH

Needs 6–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 11b

📆 Growing Season

83 days in Monroe County

Growing Tips for Cucumber in Monroe County

Direct sow Cucumber outdoors after January 22 in Monroe County when soil has warmed and frost danger has passed.

Sandy soil in Monroe County dries quickly — mulch Cucumber with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

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 Monroe County, FL?

Monroe County is in Zone 11b with an average last frost of January 22. Plan your Cucumber planting based on this frost date — see the calendar above for exact timing.

What planting zone is Monroe County, FL?

Monroe County, Florida is in USDA Hardiness Zone 11b. The average last spring frost is January 22 and first fall frost is .

🌱

Your Monroe County Garden Planner — Free

A 24-page printable planner built for Monroe County (Zone 11b). 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 Monroe County, FL. 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.