When to Plant Radicchio in Okaloosa County, FL
May to-do list for Okaloosa County, Florida
May rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Okaloosa County, Florida.
-
Harvest radicchio as they ripen
Morning harvests are best — cooler temperatures mean crisper produce and longer fridge life.
June prep starts now
- First harvests: radicchio
Radicchio is an Italian chicory with stunning red and white leaves and a pleasantly bitter flavor. It forms tight heads and is used in salads, grilled, or braised.
Okaloosa County, Florida is in USDA Zone 9a. The average last spring frost is March 14 and the first fall frost is November 16, giving you a growing season of approximately 247 days.
At an elevation of 396 feet, Okaloosa County receives approximately 48.4 inches of rainfall annually with predominantly sand soil. Summer highs average 92°F, providing good warmth for Radicchio during the growing season. Sandy soil warms quickly in spring — great for early planting — but Radicchio will need more frequent watering and organic matter to retain nutrients.
Okaloosa County Soil Profile
Soil Type
Sand
Soil pH
4.9-5.8
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 Okaloosa County
How your county's soil matches Radicchio's growing requirements.
Soil pH
Your soil pH (4.9–5.8) is more acidic than Radicchio prefers (6.0–7.0). Add garden lime to raise pH.
Soil Texture
Sandy soil in Okaloosa County warms quickly in spring but drains fast. Radicchio will need more frequent watering and regular compost additions to retain nutrients.
Drainage
Drainage is adequate for Radicchio.
Organic Matter
Organic matter is low (1.6%). Add 2-3 inches of compost before planting Radicchio.
How to Plant Radicchio
Fall planting: Sow 8 weeks before your first frost date for a fall harvest.
Succession Planting Radicchio
Sow every 6.9 weeks. Last sowing by Aug 28 to harvest before frost.
For a dedicated fall crop, sow by Sep 21.
Plant Water Budget
Water stress score is 6/10 — consider drought-tolerant varieties and mulching
Monthly Watering Guide for Radicchio
Radicchio needs approximately 0.7 inches of water per week (3" per month). Here's how your county's rainfall compares month by month.
| Month | Radicchio Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 2.1" | 0" | ❄️ Dormant |
| Feb | — | 2.4" | 0" | ❄️ Dormant |
| Mar | 3" | 2.7" | 0.3" | 💧 Light watering |
| Apr | 3" | 2.3" | 0.7" | 💧 Light watering |
| May | 3" | 3.5" | 0" | ✅ Rainfall sufficient |
| Jun | 3" | 6.1" | 0" | ✅ Rainfall sufficient |
| Jul | 3" | 8.5" | 0" | ✅ Rainfall sufficient |
| Aug | 3" | 6.3" | 0" | ✅ Rainfall sufficient |
| Sep | 3" | 6.4" | 0" | ✅ Rainfall sufficient |
| Oct | 3" | 4" | 0" | ✅ Rainfall sufficient |
| Nov | 3" | 2.3" | 0.7" | 💧 Light watering |
| Dec | — | 1.8" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Mar–Nov in Okaloosa County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Radicchio 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.
Radicchio Planting Timeline — Okaloosa County, FL
Radicchio Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | February 14 | Feb 14 – Feb 28 |
| Transplant Outdoors | March 14 | Mar 14 – Mar 28 |
| Direct Sow | February 21 | Feb 21 – Mar 14 |
| Harvest | May 16 | May 16 – Jun 20 |
| Fall Sowing | September 21 | Sep 21 – Oct 5 |
Plant 0.5" deep · 6" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Start Indoors Direct Sow |
| March | Transplant Outdoors Direct Sow |
| April | — |
| May | Harvest |
| June | Harvest |
| July | — |
| August | — |
| September | Fall Sowing |
| October | Fall Sowing |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
0.7"/week · Only during dry spells
📅 Days to Maturity
60–80 days
🧪 Soil pH
Needs 6–7 · Your soil: too_acidic
🗺️ USDA Zone
Zone 9a
📆 Growing Season
247 days in Okaloosa County
Growing Tips for Radicchio in Okaloosa County
Direct sow Radicchio outdoors after March 14 in Okaloosa County when soil has warmed and frost danger has passed.
Sandy soil in Okaloosa County dries quickly — mulch Radicchio with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.
Common pests for Radicchio in this region include aphids and slugs. Use row covers early in the season and inspect plants weekly.
General growing tips
Start in late summer for fall harvest. The red color develops with cool nights and light frost. Harvest when heads are firm and compact.
Companion Planting
Good Companions
Avoid Planting Near
Check more plant combinations with our Companion Planting Checker →
Radicchio in Other Locations
Frequently Asked Questions
When should I plant Radicchio in Okaloosa County, FL?
Okaloosa County is in Zone 9a with an average last frost of March 14. Plan your Radicchio planting based on this frost date — see the calendar above for exact timing.
What planting zone is Okaloosa County, FL?
Okaloosa County, Florida is in USDA Hardiness Zone 9a. The average last spring frost is March 14 and first fall frost is November 16.
Your Okaloosa County Garden Planner — Free
A 24-page printable planner built for Okaloosa County (Zone 9a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.