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When to Plant Catnip in Prentiss County, MS

Prentiss County, Mississippi Zone 8a May

What to do in May

If you only do a handful of things in the garden this May, make it these. They're sequenced around your zone's frost timing.

Avg. last frost March 30
Avg. first frost October 29
Soil temp (4") 70°F
Watering Low
Pest pressure Moderate
Daylight 13.8 hrs
Looking ahead to June
  • 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.

Prentiss County, Mississippi is in USDA Zone 8a. The average last spring frost is March 30 and the first fall frost is October 29, giving you a growing season of approximately 213 days.

At an elevation of 450 feet, Prentiss County receives approximately 55.7 inches of rainfall annually with predominantly clay loam soil. Summer highs average 88°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.

Prentiss County, MS (Zone 8a) Long season
213 days
Last Spring Frost March 30
213 growing days
First Fall Frost October 29
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Prentiss County Soil Profile

Soil Type

Clay Loam

Soil pH

5.7-6.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (83 days to spare)
Transplant: Mar 29 🍅 Harvest: May 31 – Aug 2
Recommended (50%) ✓ Fits season (80 days to spare)
Transplant: Apr 6 🍅 Harvest: Jun 8 – Aug 10
Safe Start (90%) ✓ Fits season (86 days to spare)
Transplant: Apr 23 🍅 Harvest: Jun 25 – 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 Prentiss County

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

Soil pH

Your soil pH (5.7–6.3) overlaps with Catnip's range (6.0–7.5), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (2.5%). 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 213-day season

Sow every 6.9 weeks. Last sowing by Aug 10 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 5.1" 0" ❄️ Dormant
Feb 4.8" 0" ❄️ Dormant
Mar 2.2" 5.9" 0" ✅ Rainfall sufficient
Apr 2.2" 3.9" 0" ✅ Rainfall sufficient
May 2.2" 4.9" 0" ✅ Rainfall sufficient
Jun 2.2" 4.9" 0" ✅ Rainfall sufficient
Jul 2.2" 5.6" 0" ✅ Rainfall sufficient
Aug 2.2" 4.8" 0" ✅ Rainfall sufficient
Sep 2.2" 4" 0" ✅ Rainfall sufficient
Oct 2.2" 3.4" 0" ✅ Rainfall sufficient
Nov 4.1" 0" ❄️ Dormant
Dec 4.5" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Oct in Prentiss 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 ~1,120 GDD — county provides 3,408 GDD Excellent fit

Catnip Planting Timeline — Prentiss County, MS

Catnip Planting Calendar

Activity When Date Range
Transplant Outdoors April 6 Apr 6 – Apr 20
Harvest June 8 Jun 8 – Aug 10

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

Month-by-Month Timeline

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

🗺️ USDA Zone

Zone 8a

📆 Growing Season

213 days in Prentiss County

Growing Tips for Catnip in Prentiss County

Direct sow Catnip outdoors after March 30 in Prentiss County when soil has warmed and frost danger has passed.

With Prentiss County's clay soil (33% 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 Prentiss County, MS?

Prentiss County is in Zone 8a with an average last frost of March 30. Plan your Catnip planting based on this frost date — see the calendar above for exact timing.

What planting zone is Prentiss County, MS?

Prentiss County, Mississippi is in USDA Hardiness Zone 8a. The average last spring frost is March 30 and first fall frost is October 29.

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Your Prentiss County Garden Planner — Free

A 24-page printable planner built for Prentiss County (Zone 8a). 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 Prentiss 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.