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When to Plant Anise in Philadelphia County, PA

Philadelphia County, Pennsylvania Zone 7b May

This month in Philadelphia County, Pennsylvania

Welcome to May in Zone 7b. These are the moves that will have the biggest impact on your growing season.

Avg. last frost April 16
Avg. first frost October 24
Soil temp (4") 68°F
Watering Low
Pest pressure Moderate
Daylight 14.2 hrs
  1. Time to start anise inside

    Your window is short. These crops want several weeks of indoor growth before they go outside.

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Anise is an annual herb grown for its licorice-flavored seeds and leaves. The seeds are used in baking, liqueurs, and traditional medicine worldwide.

Philadelphia County, Pennsylvania is in USDA Zone 7b. The average last spring frost is April 16 and the first fall frost is October 24, giving you a growing season of approximately 191 days.

At an elevation of 996 feet, Philadelphia County receives approximately 48.2 inches of rainfall annually with predominantly silt loam soil. Summer highs average 93°F, providing good warmth for Anise during the growing season.

Philadelphia County, PA (Zone 7b) Moderate season
191 days
Last Spring Frost April 16
191 growing days
First Fall Frost October 24
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Philadelphia County Soil Profile

Soil Type

Silt Loam

Soil pH

5.2-6.7

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (27 days to spare)
Start indoors: Mar 9 Transplant: Apr 6 🍅 Harvest: Jul 6 – Sep 21
Recommended (50%) ✓ Fits season (30 days to spare)
Start indoors: Mar 12 Transplant: Apr 9 🍅 Harvest: Jul 9 – Sep 24
Safe Start (90%) ✓ Fits season (16 days to spare)
Start indoors: Apr 6 Transplant: May 4 🍅 Harvest: Aug 3 – Oct 19

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 Philadelphia County

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

Soil pH

Your soil pH (5.2–6.7) is more acidic than Anise prefers (6.0–7.5). Add garden lime to raise pH.

Soil Texture

The silt loam soil in Philadelphia County is excellent for Anise — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (4.0%). Annual compost additions will help Anise.

How to Plant Anise

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

Fall planting: Sow 10 weeks before your first frost date for a fall harvest.

Plant Water Budget

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

Monthly Watering Guide for Anise

Anise needs approximately 0.4 inches of water per week (1.7" per month). Here's how your county's rainfall compares month by month.

Month Anise Needs Rainfall You Supplement Action
Jan 3.9" 0" ❄️ Dormant
Feb 3.7" 0" ❄️ Dormant
Mar 3.8" 0" ❄️ Dormant
Apr 1.7" 4.5" 0" ✅ Rainfall sufficient
May 1.7" 4.5" 0" ✅ Rainfall sufficient
Jun 1.7" 3.9" 0" ✅ Rainfall sufficient
Jul 1.7" 4.5" 0" ✅ Rainfall sufficient
Aug 1.7" 4.5" 0" ✅ Rainfall sufficient
Sep 1.7" 3.6" 0" ✅ Rainfall sufficient
Oct 1.7" 4.3" 0" ✅ Rainfall sufficient
Nov 3.3" 0" ❄️ Dormant
Dec 3.8" 0" ❄️ Dormant

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

Anise 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.

Anise needs ~2,074 GDD — county provides 3,772 GDD Excellent fit

Anise Planting Timeline — Philadelphia County, PA

Anise Planting Calendar

Activity When Date Range
Start Indoors March 12 Mar 12 – Mar 26
Transplant Outdoors April 9 Apr 9 – Apr 23
Direct Sow April 2 Apr 2 – Apr 23
Harvest July 9 Jul 9 – Sep 24
Fall Sowing August 15 Aug 15 – Aug 29

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

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.4"/week · Natural rainfall sufficient

📅 Days to Maturity

90–120 days

🧪 Soil pH

Needs 6–7.5 · Your soil: too_acidic

🗺️ USDA Zone

Zone 7b

📆 Growing Season

191 days in Philadelphia County

Growing Tips for Anise in Philadelphia County

Direct sow Anise outdoors after April 16 in Philadelphia County when soil has warmed and frost danger has passed.

Common pests for Anise in this region include carrot rust fly and parsleyworm. Use row covers early in the season and inspect plants weekly.

General growing tips

Direct sow after last frost as anise has a taproot. Harvest seeds when they turn brown. Plants may need staking. The feathery leaves are also edible with a mild anise flavor.

Companion Planting

Good Companions

Avoid Planting Near

  • Carrots

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Anise in Philadelphia County, PA?

Philadelphia County is in Zone 7b with an average last frost of April 16. Plan your Anise planting based on this frost date — see the calendar above for exact timing.

What planting zone is Philadelphia County, PA?

Philadelphia County, Pennsylvania is in USDA Hardiness Zone 7b. The average last spring frost is April 16 and first fall frost is October 24.

🌱

Your Philadelphia County Garden Planner — Free

A 24-page printable planner built for Philadelphia County (Zone 7b). 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 Philadelphia County, PA. 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.