When to Plant Arugula in Hillsborough County, FL
May to-do list for Hillsborough County, Florida
Each item below is timed to Hillsborough County, Florida's frost dates and soil temperatures. Skip nothing, stress about nothing.
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Bring in the arugula
The more you pick, the more the plant produces. Letting fruit overripen tells the plant it's time to stop.
Arugula is a fast-growing cool-season green with a peppery, nutty flavor. It is excellent in salads and can be harvested as baby greens or mature leaves.
Hillsborough County, Florida is in USDA Zone 10a. The average last spring frost is January 25 and the first fall frost is December 20, giving you a growing season of approximately 329 days.
At an elevation of 63 feet, Hillsborough County receives approximately 54.4 inches of rainfall annually with predominantly sand soil. Summer highs average 98°F, so Arugula may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Arugula will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Arugula root diseases.
Hillsborough County Soil Profile
Soil Type
Sand
Soil pH
4.9-5.9
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 Hillsborough County
How your county's soil matches Arugula's growing requirements.
Soil pH
Your soil pH (4.9–5.9) is more acidic than Arugula prefers (6.0–7.0). Add garden lime to raise pH.
Soil Texture
Sandy soil in Hillsborough County warms quickly in spring but drains fast. Arugula will need more frequent watering and regular compost additions to retain nutrients.
Drainage
Drainage is adequate for Arugula.
Organic Matter
Organic matter is low (1.5%). Add 2-3 inches of compost before planting Arugula.
How to Plant Arugula
Fall planting: Sow 8 weeks before your first frost date for a fall harvest.
Succession Planting Arugula
Sow every 3.4 weeks. Last sowing by Oct 31 to harvest before frost.
For a dedicated fall crop, sow by Oct 25.
Plant Water Budget
Water stress score is 6/10 — consider drought-tolerant varieties and mulching
Monthly Watering Guide for Arugula
Arugula needs approximately 0.6 inches of water per week (2.6" per month). Here's how your county's rainfall compares month by month.
| Month | Arugula Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | 2.6" | 2.3" | 0.3" | 💧 Light watering |
| Feb | 2.6" | 2.7" | 0" | ✅ Rainfall sufficient |
| Mar | 2.6" | 2.9" | 0" | ✅ Rainfall sufficient |
| Apr | 2.6" | 2.1" | 0.5" | 💧 Light watering |
| May | 2.6" | 3.8" | 0" | ✅ Rainfall sufficient |
| Jun | 2.6" | 8.1" | 0" | ✅ Rainfall sufficient |
| Jul | 2.6" | 8" | 0" | ✅ Rainfall sufficient |
| Aug | 2.6" | 8" | 0" | ✅ Rainfall sufficient |
| Sep | 2.6" | 7.7" | 0" | ✅ Rainfall sufficient |
| Oct | 2.6" | 4.5" | 0" | ✅ Rainfall sufficient |
| Nov | 2.6" | 2" | 0.6" | 💧 Light watering |
| Dec | 2.6" | 2.4" | 0.2" | 💧 Light watering |
Water needs are for active growing months only (Jan–Dec in Hillsborough County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Arugula 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.
Arugula Planting Timeline — Hillsborough County, FL
Arugula Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | December 28 | Dec 28 – Jan 11 |
| Transplant Outdoors | January 25 | Jan 25 – Feb 8 |
| Direct Sow | January 4 | Jan 4 – Jan 25 |
| Harvest | March 1 | Mar 1 – May 3 |
| Fall Sowing | October 25 | Oct 25 – Nov 8 |
Plant 0.5" deep · 6" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | Start Indoors Transplant Outdoors Direct Sow |
| February | Transplant Outdoors |
| March | Harvest |
| April | Harvest |
| May | Harvest |
| June | — |
| July | — |
| August | — |
| September | — |
| October | Fall Sowing |
| November | Fall Sowing |
| December | Start Indoors |
Growing Conditions
☀️ Sun
Partial Shade (3-6 hours)
💧 Water
0.6"/week · Only during dry spells
📅 Days to Maturity
30–50 days
🧪 Soil pH
Needs 6–7 · Your soil: too_acidic
🗺️ USDA Zone
Zone 10a
📆 Growing Season
329 days in Hillsborough County
Growing Tips for Arugula in Hillsborough County
Direct sow Arugula outdoors after January 25 in Hillsborough County when soil has warmed and frost danger has passed.
Sandy soil in Hillsborough County dries quickly — mulch Arugula with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.
Summer highs in Hillsborough County reach 98°F — grow Arugula as a spring or fall crop. Use shade cloth if planting in summer.
Your generous 330.0-day season in Hillsborough County allows multiple plantings of Arugula. Sow every 15.0 days for continuous harvest.
Common pests for Arugula in this region include cabbage worm and flea beetles. Use row covers early in the season and inspect plants weekly.
General growing tips
Sow seeds directly every 2-3 weeks for continuous harvest. Provide afternoon shade in warm weather to prevent bolting. Harvest outer leaves first to extend production.
Companion Planting
Good Companions
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Check more plant combinations with our Companion Planting Checker →
Arugula in Other Locations
Frequently Asked Questions
When should I plant Arugula in Hillsborough County, FL?
Hillsborough County is in Zone 10a with an average last frost of January 25. Plan your Arugula planting based on this frost date — see the calendar above for exact timing.
What planting zone is Hillsborough County, FL?
Hillsborough County, Florida is in USDA Hardiness Zone 10a. The average last spring frost is January 25 and first fall frost is December 20.
Your Hillsborough County Garden Planner — Free
A 24-page printable planner built for Hillsborough County (Zone 10a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.