When to Plant Cucumber in St. Lucie County, FL
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.
St. Lucie County, Florida is in USDA Zone 10a. The average last spring frost is January 29 and the first fall frost is December 16, giving you a growing season of approximately 321 days.
At an elevation of 185 feet, St. Lucie County receives approximately 56.2 inches of rainfall annually with predominantly sand soil. Summer highs average 89°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.
St. Lucie County Soil Profile
Soil Type
Sand
Soil pH
4.8-5.8
Drainage
Well Drained
Plant Planting Risk Windows
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 St. Lucie County
How your county's soil matches Cucumber's growing requirements.
Soil pH
Your soil pH (4.8–5.8) is more acidic than Cucumber prefers (6.0–7.0). Add garden lime to raise pH.
Soil Texture
Sandy soil in St. Lucie 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
Succession Planting Cucumber
Sow every 5.7 weeks. Last sowing by Oct 07 to harvest before frost.
Plant Water Budget
Water stress score is 6/10 — consider drought-tolerant varieties and mulching
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" | 3.3" | 3.2" | 💧 Light watering |
| Apr | 6.5" | 2.2" | 4.3" | 🚿 Regular watering |
| May | 6.5" | 3.1" | 3.4" | 🚿 Regular watering |
| Jun | 6.5" | 8.1" | 0" | ✅ Rainfall sufficient |
| Jul | 6.5" | 9" | 0" | ✅ Rainfall sufficient |
| Aug | 6.5" | 8.6" | 0" | ✅ Rainfall sufficient |
| Sep | 6.5" | 7.5" | 0" | ✅ Rainfall sufficient |
| Oct | 6.5" | 5" | 1.5" | 💧 Light watering |
| Nov | 6.5" | 2.1" | 4.4" | 🚿 Regular watering |
| Dec | 6.5" | 2.2" | 4.3" | 🚿 Regular watering |
Water needs are for active growing months only (Jan–Dec in St. Lucie 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 Planting Timeline — St. Lucie County, FL
Cucumber Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | January 1 | Jan 1 – Jan 15 |
| Transplant Outdoors | February 5 | Feb 5 – Feb 19 |
| Direct Sow | January 29 | Jan 29 – Feb 19 |
| Harvest | April 2 | Apr 2 – May 28 |
Plant 0.5" deep · 24" apart · Rows 48" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | Start Indoors Direct Sow |
| February | Transplant Outdoors Direct Sow |
| March | — |
| April | Harvest |
| May | Harvest |
| June | — |
| July | — |
| August | — |
| September | — |
| October | — |
| November | — |
| December | — |
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 10a
📆 Growing Season
321 days in St. Lucie County
Growing Tips for Cucumber in St. Lucie County
Direct sow Cucumber outdoors after January 29 in St. Lucie County when soil has warmed and frost danger has passed.
Sandy soil in St. Lucie 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
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Cucumber in Other Locations
Frequently Asked Questions
When should I plant Cucumber in St. Lucie County, FL?
St. Lucie County is in Zone 10a with an average last frost of January 29. Plan your Cucumber planting based on this frost date — see the calendar above for exact timing.
What planting zone is St. Lucie County, FL?
St. Lucie County, Florida is in USDA Hardiness Zone 10a. The average last spring frost is January 29 and first fall frost is December 16.
Plan Your Garden with Confidence
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