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When to Plant Romanesco in Crawford County, IN

Crawford County, Indiana Zone 6b April

Your April gardening checklist

We've pulled the most time-sensitive tasks for Crawford County, Indiana this April and put them front and centre. Tackle them in order.

Avg. last frost April 12
Avg. first frost October 21
Soil temp (4") 49°F
Watering Moderate
Pest pressure Low
Daylight 13 hrs
  1. Get romanesco in the ground

    Pick a cloudy afternoon or evening to plant. Less transplant shock, and your seedlings will barely blink.

Before May arrives, get these ready
  • Starting indoors: romanesco

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Romanesco is a stunning brassica with a lime-green head composed of fractal-patterned spiraling florets. It has a nuttier, milder flavor than cauliflower.

Crawford County, Indiana is in USDA Zone 6b. The average last spring frost is April 12 and the first fall frost is October 21, giving you a growing season of approximately 192 days.

At an elevation of 1,339 feet, Crawford County receives approximately 34.2 inches of rainfall annually with predominantly silt loam soil. Summer highs average 85°F, providing good warmth for Romanesco during the growing season.

Crawford County, IN (Zone 6b) Moderate season
192 days
Last Spring Frost April 12
192 growing days
First Fall Frost October 21

Crawford County Soil Profile

Soil Type

Silt Loam

Soil pH

6.1-6.9

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (73 days to spare)
Start indoors: Mar 4 Transplant: Apr 8 🍅 Harvest: Jun 24 – Aug 5
Recommended (50%) ✓ Fits season (73 days to spare)
Start indoors: Mar 8 Transplant: Apr 12 🍅 Harvest: Jun 28 – Aug 9
Safe Start (90%) ✓ Fits season (78 days to spare)
Start indoors: Mar 26 Transplant: Apr 30 🍅 Harvest: Jul 16 – Aug 27

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 Crawford County

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

Soil pH

Your soil pH (6.1–6.9) is within Romanesco's preferred range (6.0–7.0).

Soil Texture

The silt loam soil in Crawford County is excellent for Romanesco — good drainage, moisture retention, and nutrient holding capacity.

Drainage

Drainage is adequate for Romanesco.

Organic Matter

Organic matter is excellent (4.6%) — Romanesco will thrive.

How to Plant Romanesco

1"
Planting Depth
15"
Between Plants
24"
Between Rows

Fall planting: Sow 10 weeks before your first frost date for a fall harvest.

Succession Planting Romanesco

2
successive plantings in your 192-day season

Sow every 8.6 weeks. Last sowing by Jul 13 to harvest before frost.

For a dedicated fall crop, sow by Aug 12.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.8″/week
You supply
0.7″/week
Watering frequency 1-2 times/week
Season total 1,132 gal / 100 sq ft
Drought risk

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Romanesco

Romanesco needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Romanesco Needs Rainfall You Supplement Action
Jan 1.5" 0" ❄️ Dormant
Feb 1.7" 0" ❄️ Dormant
Mar 2.2" 0" ❄️ Dormant
Apr 4.3" 3" 1.3" 💧 Light watering
May 4.3" 3.8" 0.5" 💧 Light watering
Jun 4.3" 4.8" 0" ✅ Rainfall sufficient
Jul 4.3" 4.1" 0.2" 💧 Light watering
Aug 4.3" 3.3" 1" 💧 Light watering
Sep 4.3" 2.6" 1.7" 💧 Light watering
Oct 4.3" 2.8" 1.5" 💧 Light watering
Nov 2.5" 0" ❄️ Dormant
Dec 1.9" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Crawford County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.

Romanesco 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.

Romanesco needs ~1,203 GDD — county provides 2,640 GDD Excellent fit

Romanesco Planting Timeline — Crawford County, IN

Romanesco Planting Calendar

Activity When Date Range
Start Indoors March 8 Mar 8 – Mar 22
Transplant Outdoors April 12 Apr 12 – Apr 26
Direct Sow March 29 Mar 29 – Apr 19
Harvest June 28 Jun 28 – Aug 9
Fall Sowing August 12 Aug 12 – Aug 26

Plant 1" deep · 15" apart · Rows 24" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · 1-2 times/week

📅 Days to Maturity

75–100 days

🧪 Soil pH

Needs 6–7 · Your soil: ideal

🗺️ USDA Zone

Zone 6b

📆 Growing Season

192 days in Crawford County

Growing Tips for Romanesco in Crawford County

Direct sow Romanesco outdoors after April 12 in Crawford County when soil has warmed and frost danger has passed.

Common pests for Romanesco in this region include cabbage worm and flea beetles. Use row covers early in the season and inspect plants weekly.

General growing tips

Start seeds indoors 5-7 weeks before transplanting. Provide consistent moisture and avoid temperature stress. Harvest when head is fully formed but before florets begin to separate.

Companion Planting

Good Companions

Avoid Planting Near

  • Tomatoes
  • Strawberries

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Romanesco in Crawford County, IN?

Crawford County is in Zone 6b with an average last frost of April 12. Plan your Romanesco planting based on this frost date — see the calendar above for exact timing.

What planting zone is Crawford County, IN?

Crawford County, Indiana is in USDA Hardiness Zone 6b. The average last spring frost is April 12 and first fall frost is October 21.

🌱

Your Crawford County Garden Planner — Free

A 24-page printable planner built for Crawford County (Zone 6b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

Instant PDF download. No spam, unsubscribe any time.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Crawford County, IN. Local conditions may vary. Last updated: April 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.