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When to Plant Lentils in Lincoln County, OR

Lincoln County, Oregon Zone 9a May

Your May gardening checklist

May rewards gardeners who work with the weather, not against it. Here's how to stay in step this month in Lincoln County, Oregon.

Avg. last frost April 19
Avg. first frost October 31
Soil temp (4") 69°F
Watering High
Pest pressure High
Daylight 14.6 hrs
  1. Start lentils under lights

    Starting these indoors now means sturdy transplants ready the moment your soil warms up.

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Lentils are an ancient pulse crop producing small, lens-shaped seeds packed with protein and iron. They grow on short, bushy plants and are surprisingly easy to cultivate.

Lincoln County, Oregon is in USDA Zone 9a. The average last spring frost is April 19 and the first fall frost is October 31, giving you a growing season of approximately 195 days.

At an elevation of 267 feet, Lincoln County receives approximately 41.3 inches of rainfall annually with predominantly silt loam soil. Summer highs average 83°F, so choose short-season varieties of Lentils to ensure they mature before fall.

Lincoln County, OR (Zone 9a) Moderate season
195 days
Last Spring Frost April 19
195 growing days
First Fall Frost October 31
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Lincoln County Soil Profile

Soil Type

Silt Loam

Soil pH

5.5-6.4

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (79 days to spare)
Start indoors: Mar 7 Transplant: Apr 4 🍅 Harvest: Jun 27 – Aug 8
Recommended (50%) ✓ Fits season (69 days to spare)
Start indoors: Mar 22 Transplant: Apr 19 🍅 Harvest: Jul 12 – Aug 23
Safe Start (90%) ✓ Fits season (79 days to spare)
Start indoors: Apr 13 Transplant: May 11 🍅 Harvest: Aug 3 – Sep 14

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 Lincoln County

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

Soil pH

Your soil pH (5.5–6.4) is more acidic than Lentils prefers (6.0–8.0). Add garden lime to raise pH.

Soil Texture

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

Organic Matter

Organic matter is excellent (4.9%) — Lentils will thrive.

How to Plant Lentils

0.5"
Planting Depth
6"
Between Plants
12"
Between Rows

Fall planting: Sow 8 weeks before your first frost date for a fall harvest.

Succession Planting Lentils

2
successive plantings in your 195-day season

Sow every 9.1 weeks. Last sowing by Jul 13 to harvest before frost.

For a dedicated fall crop, sow by Sep 05.

Plant Water Budget

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

Monthly Watering Guide for Lentils

Lentils needs approximately 0.6 inches of water per week (2.6" per month). Here's how your county's rainfall compares month by month.

Month Lentils Needs Rainfall You Supplement Action
Jan 6.1" 0" ❄️ Dormant
Feb 5" 0" ❄️ Dormant
Mar 4.7" 0" ❄️ Dormant
Apr 2.6" 3.2" 0" ✅ Rainfall sufficient
May 2.6" 2" 0.6" 💧 Light watering
Jun 2.6" 1.5" 1.1" 💧 Light watering
Jul 2.6" 0.6" 2" 🚿 Regular watering
Aug 2.6" 0.7" 1.9" 🚿 Regular watering
Sep 2.6" 1.8" 0.8" 💧 Light watering
Oct 2.6" 3.8" 0" ✅ Rainfall sufficient
Nov 6.3" 0" ❄️ Dormant
Dec 5.7" 0" ❄️ Dormant

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

Lentils 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.

Lentils needs ~1,164 GDD — county provides 2,388 GDD Excellent fit

Lentils Planting Timeline — Lincoln County, OR

Lentils Planting Calendar

Activity When Date Range
Start Indoors March 22 Mar 22 – Apr 5
Transplant Outdoors April 19 Apr 19 – May 3
Direct Sow March 29 Mar 29 – Apr 19
Harvest July 12 Jul 12 – Aug 23
Fall Sowing September 5 Sep 5 – Sep 19

Plant 0.5" deep · 6" apart · Rows 12" apart

Month-by-Month Timeline

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

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.6"/week · Natural rainfall sufficient

📅 Days to Maturity

80–110 days

🧪 Soil pH

Needs 6–8 · Your soil: too_acidic

🗺️ USDA Zone

Zone 9a

📆 Growing Season

195 days in Lincoln County

Growing Tips for Lentils in Lincoln County

Direct sow Lentils outdoors after April 19 in Lincoln County when soil has warmed and frost danger has passed.

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

General growing tips

Direct sow in early spring as lentils tolerate frost. Provide short supports as plants tend to lodge. Harvest when lower pods turn brown. Pull entire plants and dry in bundles.

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 Lentils in Lincoln County, OR?

Lincoln County is in Zone 9a with an average last frost of April 19. Plan your Lentils planting based on this frost date — see the calendar above for exact timing.

What planting zone is Lincoln County, OR?

Lincoln County, Oregon is in USDA Hardiness Zone 9a. The average last spring frost is April 19 and first fall frost is October 31.

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Your Lincoln County Garden Planner — Free

A 24-page printable planner built for Lincoln 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 Lincoln County, OR. 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.