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When to Plant Catnip in Arkansas County, AR

Arkansas County, Arkansas Zone 8b May

This month in Arkansas County, Arkansas

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

Avg. last frost March 14
Avg. first frost November 12
Soil temp (4") 66°F
Watering Moderate
Pest pressure Moderate
Daylight 13.8 hrs
  1. Start harvesting catnip

    Taste as you pick. The first ripe produce is the best feedback loop you'll get all season.

A few tasks this May that'll pay off in 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.

Arkansas County, Arkansas is in USDA Zone 8b. The average last spring frost is March 14 and the first fall frost is November 12, giving you a growing season of approximately 243 days.

At an elevation of 803 feet, Arkansas County receives approximately 51.3 inches of rainfall annually with predominantly silt loam soil. Summer highs average 93°F, providing good warmth for Catnip during the growing season. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Catnip root diseases.

Arkansas County, AR (Zone 8b) Long season
243 days
Last Spring Frost March 14
243 growing days
First Fall Frost November 12

Arkansas County Soil Profile

Soil Type

Silt Loam

Soil pH

5.4-6.6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (106 days to spare)
Transplant: Mar 16 🍅 Harvest: May 18 – Jul 20
Recommended (50%) ✓ Fits season (110 days to spare)
Transplant: Mar 21 🍅 Harvest: May 23 – Jul 25
Safe Start (90%) ✓ Fits season (103 days to spare)
Transplant: Apr 13 🍅 Harvest: Jun 15 – Aug 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 Arkansas County

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

Soil pH

Your soil pH (5.4–6.6) overlaps with Catnip's range (6.0–7.5), though not a perfect match.

Soil Texture

The silt loam soil in Arkansas 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 243-day season

Sow every 6.9 weeks. Last sowing by Aug 24 to harvest before frost.

Plant Water Budget

Plant needs
0.5″/week
Rainfall provides
0.9″/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 4.2" 0" ❄️ Dormant
Feb 4.3" 0" ❄️ Dormant
Mar 2.2" 5" 0" ✅ Rainfall sufficient
Apr 2.2" 3.6" 0" ✅ Rainfall sufficient
May 2.2" 3.7" 0" ✅ Rainfall sufficient
Jun 2.2" 4.4" 0" ✅ Rainfall sufficient
Jul 2.2" 5.2" 0" ✅ Rainfall sufficient
Aug 2.2" 5.3" 0" ✅ Rainfall sufficient
Sep 2.2" 4.6" 0" ✅ Rainfall sufficient
Oct 2.2" 3.7" 0" ✅ Rainfall sufficient
Nov 2.2" 3.6" 0" ✅ Rainfall sufficient
Dec 3.7" 0" ❄️ Dormant

Water needs are for active growing months only (Mar–Nov in Arkansas 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 ~1,382 GDD — county provides 4,799 GDD Excellent fit

Catnip Planting Timeline — Arkansas County, AR

Catnip Planting Calendar

Activity When Date Range
Transplant Outdoors March 21 Mar 21 – Apr 4
Harvest May 23 May 23 – Jul 25

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
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: acceptable

🗺️ USDA Zone

Zone 8b

📆 Growing Season

243 days in Arkansas County

Growing Tips for Catnip in Arkansas County

Direct sow Catnip outdoors after March 14 in Arkansas County when soil has warmed and frost danger has passed.

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 Arkansas County, AR?

Arkansas County is in Zone 8b with an average last frost of March 14. Plan your Catnip planting based on this frost date — see the calendar above for exact timing.

What planting zone is Arkansas County, AR?

Arkansas County, Arkansas is in USDA Hardiness Zone 8b. The average last spring frost is March 14 and first fall frost is November 12.

🌱

Your Arkansas County Garden Planner — Free

A 24-page printable planner built for Arkansas 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 Arkansas County, AR. 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.