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When to Plant Amaranth in Middlesex County, NJ

Amaranth is an ancient grain crop with edible leaves and seeds, rich in protein and micronutrients. It thrives in warm conditions and is drought-tolerant once established.

Middlesex County, New Jersey is in USDA Zone 7a. The average last spring frost is March 29 and the first fall frost is November 12, giving you a growing season of approximately 228 days.

At an elevation of 947 feet, Middlesex County receives approximately 45.5 inches of rainfall annually with predominantly silt loam soil. Summer highs average 94Β°F, providing good warmth for Amaranth during the growing season.

Middlesex County, NJ (Zone 7a) Long season
228 days
Last Spring Frost March 29
228 growing days
First Fall Frost November 12

Middlesex County Soil Profile

Soil Type

Silt Loam

Soil pH

5-6.6

Drainage

Well Drained

Monthly Watering Guide for Amaranth

Amaranth needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.

Month Amaranth Needs Rainfall You Supplement Action
Jan β€” 3.3" 0" ❄️ Dormant
Feb β€” 3.1" 0" ❄️ Dormant
Mar 4.3" 3.6" 0.7" πŸ’§ Light watering
Apr 4.3" 4.2" 0.1" πŸ’§ Light watering
May 4.3" 4.8" 0" βœ… Rainfall sufficient
Jun 4.3" 4.9" 0" βœ… Rainfall sufficient
Jul 4.3" 4" 0.3" πŸ’§ Light watering
Aug 4.3" 4.3" 0" βœ… Rainfall sufficient
Sep 4.3" 3.4" 0.9" πŸ’§ Light watering
Oct 4.3" 3.7" 0.6" πŸ’§ Light watering
Nov 4.3" 3.2" 1.1" πŸ’§ Light watering
Dec β€” 3" 0" ❄️ Dormant

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

Amaranth Planting Timeline β€” Middlesex County, NJ

Amaranth Planting Calendar

Activity When Date Range
Start Indoors February 8 Feb 8 – Feb 22
Transplant Outdoors April 12 Apr 12 – Apr 26
Direct Sow April 5 Apr 5 – Apr 26
Harvest July 12 Jul 12 – Aug 30

Plant 1" deep Β· 15" apart Β· Rows 24" apart

Month-by-Month Timeline

MonthActivities
January β€”
February Start Indoors
March β€”
April Transplant Outdoors Direct Sow
May β€”
June β€”
July Harvest
August Harvest
September β€”
October β€”
November β€”
December β€”

Growing Conditions

β˜€οΈ Sun

Full Sun (6-8+ hours)

πŸ’§ Water

Moderate β€” regular watering

πŸ“… Days to Maturity

90–120 days

πŸ§ͺ Soil pH

Needs 6–7.5 Β· Your soil: N/A

πŸ—ΊοΈ USDA Zone

Zone 7a

πŸ“† Growing Season

228 days in Middlesex County

Growing Tips for Middlesex County

Direct sow after last frost when soil is warm. Thin seedlings to 18 inches apart. Harvest leaves when young and tender; harvest seeds when flower heads begin to dry.

Companion Planting

Good Companions

Avoid Planting Near

  • Fennel

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Amaranth in Middlesex County, NJ?

Middlesex County is in Zone 7a with an average last frost of March 29. Plan your Amaranth planting based on this frost date β€” see the calendar above for exact timing.

What planting zone is Middlesex County, NJ?

Middlesex County, New Jersey is in USDA Hardiness Zone 7a. The average last spring frost is March 29 and first fall frost is November 12.

🌱

Plan Your Garden with Confidence

Get our free Garden Planner β€” designed to help Middlesex County gardeners in Zone 7a organize planting dates, track what's growing, and never miss a planting window.

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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 Middlesex County, NJ. Local conditions may vary. Last updated: April 2026.