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When to plant Amaranth in Macclenny, FL

For Amaranth in Macclenny, the safe spring window opens around March 1 and closes around March 22. Last expected frost is March 1, first fall frost November 27, giving a 271-day growing season.

When to Plant Amaranth in Macclenny, FL

Baker County, Florida Zone 9a June

What to do in June

Your garden in Baker County, Florida is working on a schedule, even when you're not. Here's where you should be this June.

Avg. last frost March 1
Avg. first frost November 27
Soil temp (4") 83°F
Watering Low
Pest pressure High
Daylight 13.9 hrs
  1. It's harvest week for amaranth

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

July prep starts now
  • First harvests: amaranth

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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.

Macclenny, Florida is in USDA Zone 9a. The average last spring frost is March 1 and the first fall frost is November 27, giving you a growing season of approximately 271 days.

At an elevation of 177 feet, Baker County receives approximately 55.8 inches of rainfall annually with predominantly sand soil. Summer highs average 94°F, providing good warmth for Amaranth during the growing season. Sandy soil warms quickly in spring — great for early planting — but Amaranth will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Amaranth root diseases.

Macclenny, FL (Zone 9a) Year-round
271 days
Last Spring Frost March 1
271 growing days
First Fall Frost November 27

Macclenny Soil Profile

Soil Type

Sand

Soil pH

4.9-6.1

Drainage

Well Drained

Amaranth Planting Risk Windows

Early Start (70% safe) ✓ Fits season (128 days to spare)
Start indoors: Jan 3 Transplant: Feb 21 🍅 Harvest: May 23 – Jul 11
Recommended (50%) ✓ Fits season (124 days to spare)
Start indoors: Jan 18 Transplant: Mar 8 🍅 Harvest: Jun 7 – Jul 26
Safe Start (90%) ✓ Fits season (122 days to spare)
Start indoors: Feb 12 Transplant: Apr 2 🍅 Harvest: Jul 2 – Aug 20

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 Macclenny

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

Soil pH

Your soil pH (4.9–6.1) is more acidic than Amaranth prefers (6.0–7.5). Add garden lime to raise pH.

Soil Texture

Sandy soil in Baker County warms quickly in spring but drains fast. Amaranth will need more frequent watering and regular compost additions to retain nutrients.

Drainage

Drainage is adequate for Amaranth.

Organic Matter

Organic matter is low (1.6%). Add 2-3 inches of compost before planting Amaranth.

How to Plant Amaranth

1"
Planting Depth
15"
Between Plants
24"
Between Rows

Amaranth Water Budget

Plant needs
1.0″/week
Rainfall provides
0.9″/week
You supply
0.4″/week
Watering frequency 1-2 times/week
Season total 1,050 gal / 100 sq ft

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 2.5" 0" ❄️ Dormant
Feb 3" 0" ❄️ Dormant
Mar 4.3" 3.8" 0.5" 💧 Light watering
Apr 4.3" 2.5" 1.8" 💧 Light watering
May 4.3" 3.9" 0.4" 💧 Light watering
Jun 4.3" 7.8" 0" ✅ Rainfall sufficient
Jul 4.3" 9.7" 0" ✅ Rainfall sufficient
Aug 4.3" 7.4" 0" ✅ Rainfall sufficient
Sep 4.3" 6.5" 0" ✅ Rainfall sufficient
Oct 4.3" 4.1" 0.2" 💧 Light watering
Nov 4.3" 2.2" 2.1" 💧 Light watering
Dec 2.5" 0" ❄️ Dormant

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

Amaranth 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.

Amaranth needs ~2,152 GDD — county provides 5,555 GDD Excellent fit

Amaranth Planting Timeline — Macclenny, FL

Amaranth Planting Calendar

Activity When Date Range
Start Indoors January 18 Jan 18 – Feb 1
Transplant Outdoors March 8 Mar 8 – Mar 22
Direct Sow March 1 Mar 1 – Mar 22
Harvest June 7 Jun 7 – Jul 26

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · 1-2 times/week

📅 Days to Maturity

90–120 days

🧪 Soil pH

Needs 6–7.5 · Your soil: too_acidic

🗺️ USDA Zone

Zone 9a

📆 Growing Season

271 days in Baker County

Growing Tips for Amaranth in Macclenny

Direct sow Amaranth outdoors after March 01 in Baker County when soil has warmed and frost danger has passed.

Sandy soil in Baker County dries quickly — mulch Amaranth with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

General growing tips

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 →

When should I plant Amaranth in Macclenny, FL?

In Macclenny, FL, plant Amaranth after the last frost (around March 1) and before the first frost (around November 27). Best results when soil holds above 50°F.

What growing zone is Macclenny, FL for Amaranth?

Macclenny sits in USDA Zone 9a. Amaranth grows reliably in zones 2a through 11b, so it's a good fit here.

Can Amaranth grow in Macclenny's climate?

Yes — Amaranth grows well in Macclenny's temperate climate. Macclenny averages a 271-day frost-free season, with last frost around March 1 and first frost around November 27.

🌱

Your Baker County Garden Planner — Free

A 22-page printable planner built for Baker County (Zone 9a). 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 Baker County, FL. Local conditions may vary. Last updated: June 2026.