Blog

When to plant Catnip in Kellerman, AL

Plant Catnip in Kellerman during the brief March 29–April 12 window. With 232 frost-free days, fall plantings can't mature before November 9.

When to Plant Catnip in Kellerman, AL

Tuscaloosa County, Alabama Zone 8b July

July in Tuscaloosa County, Alabama — your action list

A quick July briefing for Tuscaloosa County, Alabama gardeners — what's urgent, what's next, and what can wait.

Avg. last frost March 22
Avg. first frost November 9
Soil temp (4") 86°F
Watering Low
Pest pressure High
Daylight 14 hrs
  1. Harvest catnip as they ripen

    This is the payoff month. Bring a basket, bring a friend, and get into the beds.

Looking ahead to August
  • First harvests: catnip

Instant PDF download. No spam, unsubscribe any time.

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.

Kellerman, Alabama is in USDA Zone 8b. The average last spring frost is March 22 and the first fall frost is November 9, giving you a growing season of approximately 232 days.

At an elevation of 436 feet, Tuscaloosa County receives approximately 52.9 inches of rainfall annually with predominantly clay loam soil. Summer highs average 94°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.

Kellerman, AL (Zone 8b) Long season
232 days
Last Spring Frost March 22
232 growing days
First Fall Frost November 9

Kellerman Soil Profile

Soil Type

Clay Loam

Soil pH

5.5-6.2

Drainage

Well Drained

Catnip Planting Risk Windows

Early Start (70% safe) ✓ Fits season (99 days to spare)
Transplant: Mar 20 🍅 Harvest: May 22 – Jul 24
Recommended (50%) ✓ Fits season (99 days to spare)
Transplant: Mar 29 🍅 Harvest: May 31 – Aug 2
Safe Start (90%) ✓ Fits season (93 days to spare)
Transplant: Apr 21 🍅 Harvest: Jun 23 – Aug 25

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 Kellerman

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

Soil pH

Your soil pH (5.5–6.2) is more acidic than Catnip prefers (6.0–7.5). Add garden lime to raise pH.

Soil Texture

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

Organic Matter

Organic matter is moderate (2.4%). 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 232-day season

Sow every 6.9 weeks. Last sowing by Aug 21 to harvest before frost.

Catnip Water Budget

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

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

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 4.5" 0" ❄️ Dormant
Feb 4.7" 0" ❄️ Dormant
Mar 2.2" 5.2" 0" ✅ Rainfall sufficient
Apr 2.2" 4.1" 0" ✅ Rainfall sufficient
May 2.2" 3.6" 0" ✅ Rainfall sufficient
Jun 2.2" 4.7" 0" ✅ Rainfall sufficient
Jul 2.2" 5.3" 0" ✅ Rainfall sufficient
Aug 2.2" 4.4" 0" ✅ Rainfall sufficient
Sep 2.2" 3.5" 0" ✅ Rainfall sufficient
Oct 2.2" 3.9" 0" ✅ Rainfall sufficient
Nov 2.2" 4.5" 0" ✅ Rainfall sufficient
Dec 4.6" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Tuscaloosa 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 ~1,435 GDD — county provides 4,756 GDD Excellent fit

Catnip Planting Timeline — Kellerman, AL

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

232 days in Tuscaloosa County

Growing Tips for Catnip in Kellerman

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

With Tuscaloosa 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 →

When should I plant Catnip in Kellerman, AL?

In Kellerman, AL, plant Catnip after the last frost (around March 22) and before the first frost (around November 9). Best results when soil holds above 50°F.

What growing zone is Kellerman, AL for Catnip?

Kellerman sits in USDA Zone 8b. Catnip grows reliably in zones 3a through 9b, so it's a good fit here.

Can Catnip grow in Kellerman's climate?

Yes — Catnip grows well in Kellerman's temperate climate. Kellerman averages a 232-day frost-free season, with last frost around March 22 and first frost around November 9.

🌱

Your Tuscaloosa County Garden Planner — Free

A 22-page printable planner built for Tuscaloosa 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.

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 Tuscaloosa County, AL. Local conditions may vary. Last updated: July 2026.