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When to plant Basil in Rooks County County,

Rooks County County's climate puts the Basil spring window between April 30 and May 21. time plantings around the expected last-frost window for best survival.

When to Plant Basil in Rooks County, KS

Basil
Rooks County, Kansas Zone 6a June

June in Rooks County, Kansas — your action list

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

Avg. last frost April 23
Avg. first frost October 16
Soil temp (4") 71°F
Watering Low
Pest pressure High
Daylight 14.8 hrs
  1. Start basil under lights

    You're about 18 weeks out from your last frost — the perfect window to get these germinating indoors.

Coming up in July — start thinking about
  • First harvests: basil

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Basil is a fragrant warm-season herb essential to Italian and Thai cuisines. It comes in many varieties including sweet, Thai, purple, and lemon types.

Rooks County, Kansas is in USDA Zone 6a. The average last spring frost is April 23 and the first fall frost is October 16, giving you a growing season of approximately 176 days.

At an elevation of 691 feet, Rooks County receives approximately 20.4 inches of rainfall annually with predominantly loam soil. Summer highs average 85°F, providing good warmth for Basil during the growing season.

Rooks County, KS (Zone 6a) Moderate season
176 days
Last Spring Frost April 23
176 growing days
First Fall Frost October 16

Rooks County Soil Profile

Soil Type

Loam

Soil pH

6.3-7.7

Drainage

Well Drained

Basil Planting Risk Windows

Early Start (70% safe) ✓ Fits season (43 days to spare)
Start indoors: Feb 27 Transplant: May 1 🍅 Harvest: Jun 26 – Aug 28
Recommended (50%) ✓ Fits season (43 days to spare)
Start indoors: Mar 5 Transplant: May 7 🍅 Harvest: Jul 2 – Sep 3
Safe Start (90%) ✓ Fits season (41 days to spare)
Start indoors: Mar 19 Transplant: May 21 🍅 Harvest: Jul 16 – Sep 17

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 Rooks County

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

Soil pH

Your soil pH (6.3–7.7) overlaps with Basil's range (6.0–7.0), though not a perfect match.

Soil Texture

The loam soil in Rooks County is excellent for Basil — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (3.3%). Annual compost additions will help Basil.

How to Plant Basil

0.5"
Planting Depth
8"
Between Plants
12"
Between Rows

Succession Planting Basil

4
successive plantings in your 176-day season

Sow every 5.7 weeks. Last sowing by Aug 02 to harvest before frost.

Basil Water Budget

Plant needs
0.6″/week
Rainfall provides
0.5″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 213 gal / 100 sq ft
Drought risk

Water stress score is 8/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Basil

Basil 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 Basil Needs Rainfall You Supplement Action
Jan 0.5" 0" ❄️ Dormant
Feb 0.7" 0" ❄️ Dormant
Mar 1.5" 0" ❄️ Dormant
Apr 2.6" 2.2" 0.4" 💧 Light watering
May 2.6" 2.7" 0" ✅ Rainfall sufficient
Jun 2.6" 3.8" 0" ✅ Rainfall sufficient
Jul 2.6" 2.4" 0.2" 💧 Light watering
Aug 2.6" 2.5" 0.1" 💧 Light watering
Sep 2.6" 1.7" 0.9" 💧 Light watering
Oct 2.6" 1.2" 1.4" 🚿 Regular watering
Nov 0.8" 0" ❄️ Dormant
Dec 0.5" 0" ❄️ Dormant

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

Basil 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.

Basil needs ~859 GDD — county provides 2,420 GDD Excellent fit

Basil Planting Timeline — Rooks County, KS

Basil Planting Calendar

Activity When Date Range
Start Indoors March 5 Mar 5 – Mar 19
Transplant Outdoors May 7 May 7 – May 21
Direct Sow April 30 Apr 30 – May 21
Harvest July 2 Jul 2 – Sep 3

Plant 0.5" deep · 8" apart · Rows 12" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.6"/week · Only during dry spells

📅 Days to Maturity

50–75 days

🧪 Soil pH

Needs 6–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 6a

📆 Growing Season

176 days in Rooks County

Growing Tips for Basil in Rooks County

Direct sow Basil outdoors after April 23 in Rooks County when soil has warmed and frost danger has passed.

General growing tips

Start seeds indoors or direct sow after last frost. Pinch flower buds to extend leaf production. Harvest leaves from the top down, cutting just above a leaf pair.

Companion Planting

Good Companions

Avoid Planting Near

  • Rue
  • Sage

Check more plant combinations with our Companion Planting Checker →

🌾 Save Your Own Basil Seeds
Life Cycle Annual
Pollination Self-Pollinating
How to Collect Let flower spikes dry brown on the plant.
Storage Store airtight; viable 5 years at 35°F, under 45% humidity.

Isolate 150 ft between varieties. Different basil species can cross.

Frequently Asked Questions

When should I plant Basil in Rooks County, KS?

Rooks County is in Zone 6a with an average last frost of April 23. Plan your Basil planting based on this frost date — see the calendar above for exact timing.

What planting zone is Rooks County, KS?

Rooks County, Kansas is in USDA Hardiness Zone 6a. The average last spring frost is April 23 and first fall frost is October 16.

When should I plant Basil in Rooks County County, ?

In Rooks County County, , plant Basil after the last frost (around April 23) and before the first frost (around October 16). Best results when soil holds above 50°F.

What growing zone is Rooks County County, for Basil?

Rooks County County sits in USDA Zone 6a. Basil grows reliably in zones 4a through 11b, so it's a good fit here.

Can Basil grow in Rooks County County's climate?

Yes — Basil grows well in Rooks County County's temperate climate. Rooks County County averages a 176-day frost-free season, with last frost around April 23 and first frost around October 16.

🌱

Your Rooks County Garden Planner — Free

A 22-page printable planner built for Rooks County (Zone 6a). 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 Rooks County, KS. Local conditions may vary. Last updated: June 2026.

Sources & credits

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