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When to plant Lima Beans in Wareham, MA

Aim to plant Lima Beans in Wareham on or after April 25; the window stays open through May 16. Wareham's 191-day frost-free season gives you enough for a full main crop and a short fall succession.

When to Plant Lima Beans in Wareham, MA

Plymouth County, Massachusetts Zone 6b June

What to do in June

Each item below is timed to Plymouth County, Massachusetts's frost dates and soil temperatures. Skip nothing, stress about nothing.

Avg. last frost April 18
Avg. first frost October 26
Soil temp (4") 74°F
Watering Low
Pest pressure High
Daylight 15 hrs

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Lima beans are a warm-season legume producing large, creamy beans with a buttery texture. Both bush and pole varieties are available, with pole types yielding more.

Wareham, Massachusetts is in USDA Zone 6b. The average last spring frost is April 18 and the first fall frost is October 26, giving you a growing season of approximately 191 days.

At an elevation of 947 feet, Plymouth County receives approximately 46.1 inches of rainfall annually with predominantly silt loam soil. Summer highs average 90°F, providing good warmth for Lima Beans during the growing season.

Wareham, MA (Zone 6b) Moderate season
191 days
Last Spring Frost April 18
191 growing days
First Fall Frost October 26

Wareham Soil Profile

Soil Type

Silt Loam

Soil pH

4.8-6.6

Drainage

Well Drained

Lima Beans Planting Risk Windows

Early Start (70% safe) ✓ Fits season (84 days to spare)
Transplant: Apr 12 🍅 Harvest: Jun 14 – Jul 26
Recommended (50%) ✓ Fits season (86 days to spare)
Transplant: Apr 18 🍅 Harvest: Jun 20 – Aug 1
Safe Start (90%) ✓ Fits season (85 days to spare)
Transplant: Apr 28 🍅 Harvest: Jun 30 – Aug 11

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 Wareham

How your county's soil matches Lima Beans's growing requirements.

Soil pH

Your soil pH (4.8–6.6) is more acidic than Lima Beans prefers (6.0–7.0). Add garden lime to raise pH.

Soil Texture

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

Organic Matter

Organic matter is moderate (3.6%). Annual compost additions will help Lima Beans.

How to Plant Lima Beans

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

Succession Planting Lima Beans

3
successive plantings in your 191-day season

Sow every 6.9 weeks. Last sowing by Jul 28 to harvest before frost.

Lima Beans Water Budget

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

Monthly Watering Guide for Lima Beans

Lima Beans needs approximately 0.9 inches of water per week (3.9" per month). Here's how your county's rainfall compares month by month.

Month Lima Beans Needs Rainfall You Supplement Action
Jan 3" 0" ❄️ Dormant
Feb 2.6" 0" ❄️ Dormant
Mar 3.7" 0" ❄️ Dormant
Apr 3.9" 4.3" 0" ✅ Rainfall sufficient
May 3.9" 4.6" 0" ✅ Rainfall sufficient
Jun 3.9" 4.5" 0" ✅ Rainfall sufficient
Jul 3.9" 5.2" 0" ✅ Rainfall sufficient
Aug 3.9" 4.1" 0" ✅ Rainfall sufficient
Sep 3.9" 3.3" 0.6" 💧 Light watering
Oct 3.9" 3.3" 0.6" 💧 Light watering
Nov 3.9" 0" ❄️ Dormant
Dec 3.6" 0" ❄️ Dormant

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

Lima Beans 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.

Lima Beans needs ~1,312 GDD — county provides 3,342 GDD Excellent fit

Lima Beans Planting Timeline — Wareham, MA

Lima Beans Planting Calendar

Activity When Date Range
Direct Sow April 25 Apr 25 – May 16
Harvest June 27 Jun 27 – Aug 8

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.9"/week · Natural rainfall sufficient

📅 Days to Maturity

60–90 days

🧪 Soil pH

Needs 6–7 · Your soil: too_acidic

🗺️ USDA Zone

Zone 6b

📆 Growing Season

191 days in Plymouth County

Growing Tips for Lima Beans in Wareham

Direct sow Lima Beans outdoors after April 18 in Plymouth County when soil has warmed and frost danger has passed.

Common pests for Lima Beans in this region include bean beetles and aphids. Use row covers early in the season and inspect plants weekly.

General growing tips

Direct sow after soil is thoroughly warm at 65F or above. Do not soak seeds before planting as they may crack. Harvest when pods are plump but still green for fresh limas.

Companion Planting

Good Companions

Avoid Planting Near

  • Onion
  • Garlic
  • Fennel

Check more plant combinations with our Companion Planting Checker →

When should I plant Lima Beans in Wareham, MA?

In Wareham, MA, plant Lima Beans after the last frost (around April 18) and before the first frost (around October 26). Best results when soil holds above 50°F.

What growing zone is Wareham, MA for Lima Beans?

Wareham sits in USDA Zone 6b. Lima Beans grows reliably in zones 3a through 11b, so it's a good fit here.

Can Lima Beans grow in Wareham's climate?

Yes — Lima Beans grows well in Wareham's temperate climate. Wareham averages a 191-day frost-free season, with last frost around April 18 and first frost around October 26.

🌱

Your Plymouth County Garden Planner — Free

A 22-page printable planner built for Plymouth County (Zone 6b). 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 Plymouth County, MA. Local conditions may vary. Last updated: June 2026.