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When to plant Lima Beans in Adams County, CO

Plant Lima Beans in Adams County from May 11 to June 1 in spring. Adams County sits in USDA Zone 6a, with last frost around May 4 and first frost on October 5.

When to Plant Lima Beans in Adams County, CO

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.

Adams County, Colorado is in USDA Zone 6a. The average last spring frost is May 4 and the first fall frost is October 5, giving you a growing season of approximately 154 days.

At an elevation of 5,827 feet, Adams County receives approximately 23.9 inches of rainfall annually with predominantly loam soil. Summer highs average 87°F, providing good warmth for Lima Beans during the growing season.

Adams County, CO (Zone 6a) Moderate season
154 days
Last Spring Frost May 4
154 growing days
First Fall Frost October 5

Adams County Soil Profile

Soil Type

Loam

Soil pH

6.0-7.0

Drainage

Well Drained

Lima Beans Planting Timeline — Adams County, CO

Lima Beans Planting Calendar

Activity When Date Range
Direct Sow May 11 May 11 – Jun 1
Harvest July 13 Jul 13 – Aug 24

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

Moderate — regular watering

📅 Days to Maturity

60–90 days

🧪 Soil pH

Needs 6–7 · Your soil: N/A

🗺️ USDA Zone

Zone 6a

📆 Growing Season

154 days in Adams County

Growing Tips for Adams County

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 →

Frequently Asked Questions

When should I plant Lima Beans in Adams County, CO?

Adams County is in Zone 6a with an average last frost of May 4. Plan your Lima Beans planting based on this frost date — see the calendar above for exact timing.

What planting zone is Adams County, CO?

Adams County, Colorado is in USDA Hardiness Zone 6a. The average last spring frost is May 4 and first fall frost is October 5.

When should I plant Lima Beans in Adams County, CO?

In Adams County, CO, plant Lima Beans after the last frost (around May 4) and before the first frost (around October 5). Best results when soil holds above 50°F.

What growing zone is Adams County, CO for Lima Beans?

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

Can Lima Beans grow in Adams County's climate?

Yes — Lima Beans grows well in Adams County's temperate climate. Adams County averages a 154-day frost-free season, with last frost around May 4 and first frost around October 5.

🌱

Your Adams County Garden Planner — Free

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

Sources & credits

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