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When to Plant Catnip in Leake County, MS

Leake County, Mississippi Zone 8b May

This month in Leake County, Mississippi

May rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Leake County, Mississippi.

Avg. last frost March 22
Avg. first frost November 6
Soil temp (4") 73°F
Watering Low
Pest pressure High
Daylight 13.7 hrs
  1. Harvest catnip as they ripen

    The more you pick, the more the plant produces. Letting fruit overripen tells the plant it's time to stop.

June prep starts now
  • First harvests: catnip

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Catnip is a hardy perennial herb in the mint family known for its effect on cats. It also makes a calming tea and is a useful companion plant that repels some pests.

Leake County, Mississippi is in USDA Zone 8b. The average last spring frost is March 22 and the first fall frost is November 6, giving you a growing season of approximately 229 days.

At an elevation of 243 feet, Leake County receives approximately 59.2 inches of rainfall annually with predominantly clay loam soil. Summer highs average 92°F, providing good warmth for Catnip during the growing season. Clay soil retains moisture well for Catnip, but amend with compost to improve drainage and prevent root rot. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Catnip root diseases.

Leake County, MS (Zone 8b) Long season
229 days
Last Spring Frost March 22
229 growing days
First Fall Frost November 6

Leake County Soil Profile

Soil Type

Clay Loam

Soil pH

5.6-6.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (97 days to spare)
Transplant: Mar 22 🍅 Harvest: May 24 – Jul 26
Recommended (50%) ✓ Fits season (96 days to spare)
Transplant: Mar 29 🍅 Harvest: May 31 – Aug 2
Safe Start (90%) ✓ Fits season (92 days to spare)
Transplant: Apr 22 🍅 Harvest: Jun 24 – Aug 26

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 Leake County

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

Soil pH

Your soil pH (5.6–6.3) is more acidic than Catnip prefers (6.0–7.5). Add garden lime to raise pH.

Soil Texture

The clay loam soil in Leake County is excellent for Catnip — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.8%). Annual compost additions will help Catnip.

How to Plant Catnip

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

Succession Planting Catnip

4
successive plantings in your 229-day season

Sow every 6.9 weeks. Last sowing by Aug 18 to harvest before frost.

Plant Water Budget

Plant needs
0.5″/week
Rainfall provides
1.1″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft

Monthly Watering Guide for Catnip

Catnip needs approximately 0.5 inches of water per week (2.2" per month). Here's how your county's rainfall compares month by month.

Month Catnip Needs Rainfall You Supplement Action
Jan 5.2" 0" ❄️ Dormant
Feb 5.4" 0" ❄️ Dormant
Mar 2.2" 6.6" 0" ✅ Rainfall sufficient
Apr 2.2" 3.9" 0" ✅ Rainfall sufficient
May 2.2" 4.8" 0" ✅ Rainfall sufficient
Jun 2.2" 5" 0" ✅ Rainfall sufficient
Jul 2.2" 5.4" 0" ✅ Rainfall sufficient
Aug 2.2" 5.6" 0" ✅ Rainfall sufficient
Sep 2.2" 4.8" 0" ✅ Rainfall sufficient
Oct 2.2" 3.6" 0" ✅ Rainfall sufficient
Nov 2.2" 4.9" 0" ✅ Rainfall sufficient
Dec 4.1" 0" ❄️ Dormant

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

Catnip 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.

Catnip needs ~1,330 GDD — county provides 4,351 GDD Excellent fit

Catnip Planting Timeline — Leake County, MS

Catnip Planting Calendar

Activity When Date Range
Transplant Outdoors March 29 Mar 29 – Apr 12
Harvest May 31 May 31 – Aug 2

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.5"/week · Natural rainfall sufficient

📅 Days to Maturity

60–80 days

🧪 Soil pH

Needs 6–7.5 · Your soil: too_acidic

🗺️ USDA Zone

Zone 8b

📆 Growing Season

229 days in Leake County

Growing Tips for Catnip in Leake County

Direct sow Catnip outdoors after March 22 in Leake County when soil has warmed and frost danger has passed.

With Leake County's clay soil (34% clay), work in 3-4 inches of compost before planting Catnip. Avoid tilling when soil is wet to prevent compaction.

General growing tips

Direct sow or start indoors. Catnip is very easy to grow and can become invasive. Harvest leaves before flowering for tea. Protect young plants from cats.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Catnip in Leake County, MS?

Leake County is in Zone 8b with an average last frost of March 22. Plan your Catnip planting based on this frost date — see the calendar above for exact timing.

What planting zone is Leake County, MS?

Leake County, Mississippi is in USDA Hardiness Zone 8b. The average last spring frost is March 22 and first fall frost is November 6.

🌱

Your Leake County Garden Planner — Free

A 24-page printable planner built for Leake County (Zone 8b). 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 Leake County, MS. Local conditions may vary. Last updated: May 2026.

Sources & credits

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