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When to Plant Yard Long Beans in Mono County, CA

Mono County, California Zone 6b May

May in Mono County, California — your action list

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

Avg. last frost June 18
Avg. first frost August 20
Soil temp (4") 52°F
Watering Critical
Pest pressure Low
Daylight 14.1 hrs
June will be here before you know it — start on
  • Direct-sowing: yard long beans

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Yard long beans are a tropical legume that produces slender pods up to 24 inches long. They are a staple in Southeast Asian cooking and thrive in hot weather.

Mono County, California is in USDA Zone 6b. The average last spring frost is June 18 and the first fall frost is August 20, giving you a growing season of approximately 63 days.

At an elevation of 2,381 feet, Mono County receives approximately 13.3 inches of rainfall annually with predominantly loam soil. Summer highs average 84°F, so choose short-season varieties of Yard Long Beans to ensure they mature before fall. With low rainfall, drip irrigation is essential for growing Yard Long Beans successfully. Mulch heavily to conserve soil moisture.

Mono County, CA (Zone 6b) Very short season
63 days
Last Spring Frost June 18
63 growing days
First Fall Frost August 20

Mono County Soil Profile

Soil Type

Loam

Soil pH

6-7.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Start indoors: Mar 27 Transplant: Jun 5 🍅 Harvest: Jul 31 – Sep 11
Recommended (50%) ✗ May not fit
Start indoors: Apr 23 Transplant: Jul 2 🍅 Harvest: Aug 27 – Oct 8
Safe Start (90%) ✓ Fits season (14 days to spare)
Start indoors: May 5 Transplant: Jul 14 🍅 Harvest: Sep 8 – Oct 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 Mono County

How your county's soil matches Yard Long Beans's growing requirements.

Soil pH

Your soil pH (6.0–7.5) is within Yard Long Beans's preferred range (6.0–7.5).

Soil Texture

The loam soil in Mono County is excellent for Yard Long Beans — good drainage, moisture retention, and nutrient holding capacity.

Organic Matter

Organic matter is moderate (2.5%). Annual compost additions will help Yard Long Beans.

How to Plant Yard Long Beans

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

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.9″/week
You supply
0.1″/week
Watering frequency Only during dry spells
Season total 76 gal / 100 sq ft
Drought risk

Water stress score is 10/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Yard Long Beans

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

Month Yard Long Beans Needs Rainfall You Supplement Action
Jan 2.7" 0" ❄️ Dormant
Feb 3.1" 0" ❄️ Dormant
Mar 1.9" 0" ❄️ Dormant
Apr 1" 0" ❄️ Dormant
May 0.3" 0" ❄️ Dormant
Jun 4.3" 0.1" 4.2" 🚿 Regular watering
Jul 4.3" 0" 4.3" 🚿 Regular watering
Aug 4.3" 0" 4.3" 🚿 Regular watering
Sep 0.2" 0" ❄️ Dormant
Oct 0.6" 0" ❄️ Dormant
Nov 1.1" 0" ❄️ Dormant
Dec 2.4" 0" ❄️ Dormant

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

Yard Long 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.

Yard Long Beans needs ~878 GDD — county provides 819 GDD Tight fit

Yard Long Beans Planting Timeline — Mono County, CA

Yard Long Beans Planting Calendar

Activity When Date Range
Start Indoors April 23 Apr 23 – May 7
Transplant Outdoors July 2 Jul 2 – Jul 16
Direct Sow June 25 Jun 25 – Jul 16
Harvest August 27 Aug 27 – Oct 8

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · Only during dry spells

📅 Days to Maturity

55–80 days

🧪 Soil pH

Needs 6–7.5 · Your soil: ideal

🗺️ USDA Zone

Zone 6b

📆 Growing Season

63 days in Mono County

Growing Tips for Yard Long Beans in Mono County

Direct sow Yard Long Beans outdoors after June 18 in Mono County when soil has warmed and frost danger has passed.

Your 63.0-day growing season in Mono County is tight for Yard Long Beans (55.0-80.0 days to maturity). Start indoors and choose early-maturing varieties.

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

Mono County receives only 13" of rain annually. Yard Long Beans needs consistent moisture — install drip irrigation or water deeply 2-3 times per week.

General growing tips

Direct sow after soil is warm. Provide tall poles or trellising as vines can reach 8-10 feet. Harvest when pods are pencil-thick before seeds bulge. Cook quickly for best texture.

Companion Planting

Good Companions

Avoid Planting Near

  • Onion
  • Garlic

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Yard Long Beans in Mono County, CA?

Mono County is in Zone 6b with an average last frost of June 18. Plan your Yard Long Beans planting based on this frost date — see the calendar above for exact timing.

What planting zone is Mono County, CA?

Mono County, California is in USDA Hardiness Zone 6b. The average last spring frost is June 18 and first fall frost is August 20.

🌱

Your Mono County Garden Planner — Free

A 24-page printable planner built for Mono 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 Mono County, CA. 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.