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When to Plant Lentils in Sullivan County, NY

Sullivan County, New York Zone 5b April

What to do in April

Your garden in Sullivan County, New York is working on a schedule, even when you're not. Here's where you should be this April.

Avg. last frost April 29
Avg. first frost October 17
Soil temp (4") 47°F
Watering Low
Pest pressure Low
Daylight 13.1 hrs
  1. Plant out lentils

    Frost risk is low now in Sullivan County, New York. If you've been covering beds overnight, you can stop.

  2. Sow lentils where they'll grow

    Thin ruthlessly once seedlings are up. Crowded roots mean smaller crops from every plant.

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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.

Sullivan County, New York is in USDA Zone 5b. The average last spring frost is April 29 and the first fall frost is October 17, giving you a growing season of approximately 171 days.

At an elevation of 325 feet, Sullivan County receives approximately 42.2 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.

Sullivan County, NY (Zone 5b) Moderate season
171 days
Last Spring Frost April 29
171 growing days
First Fall Frost October 17

Sullivan County Soil Profile

Soil Type

Silt Loam

Soil pH

5-6.6

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (44 days to spare)
Start indoors: Mar 19 Transplant: Apr 23 🍅 Harvest: Jul 16 – Aug 27
Recommended (50%) ✓ Fits season (45 days to spare)
Start indoors: Mar 25 Transplant: Apr 29 🍅 Harvest: Jul 22 – Sep 2
Safe Start (90%) ✓ Fits season (44 days to spare)
Start indoors: Apr 12 Transplant: May 17 🍅 Harvest: Aug 9 – Sep 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 Sullivan County

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

Soil pH

Your soil pH (5.0–6.6) is more acidic than Lentils prefers (6.0–8.0). Add garden lime to raise pH.

Soil Texture

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

Drainage

Lentils prefers dry conditions but your soil drains poorly. Use raised beds or mounded rows to prevent root rot.

Organic Matter

Organic matter is moderate (3.7%). Annual compost additions will help Lentils.

How to Plant Lentils

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

Fall planting: Sow 10 weeks before your first frost date for a fall harvest.

Succession Planting Lentils

2
successive plantings in your 171-day season

Sow every 9.1 weeks. Last sowing by Jun 29 to harvest before frost.

For a dedicated fall crop, sow by Aug 08.

Plant Water Budget

Plant needs
0.6″/week
Rainfall provides
1.0″/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 3" 0" ❄️ Dormant
Feb 2.5" 0" ❄️ Dormant
Mar 3.4" 0" ❄️ Dormant
Apr 2.6" 4.1" 0" ✅ Rainfall sufficient
May 2.6" 4.1" 0" ✅ Rainfall sufficient
Jun 2.6" 4.4" 0" ✅ Rainfall sufficient
Jul 2.6" 4.2" 0" ✅ Rainfall sufficient
Aug 2.6" 3.9" 0" ✅ Rainfall sufficient
Sep 2.6" 3.6" 0" ✅ Rainfall sufficient
Oct 2.6" 3.5" 0" ✅ Rainfall sufficient
Nov 2.8" 0" ❄️ Dormant
Dec 2.7" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Sullivan 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 2,094 GDD Excellent fit

Lentils Planting Timeline — Sullivan County, NY

Lentils Planting Calendar

Activity When Date Range
Start Indoors March 25 Mar 25 – Apr 8
Transplant Outdoors April 29 Apr 29 – May 13
Direct Sow April 15 Apr 15 – May 6
Harvest July 22 Jul 22 – Sep 2
Fall Sowing August 8 Aug 8 – Aug 22

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

Month-by-Month Timeline

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

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 5b

📆 Growing Season

171 days in Sullivan County

Growing Tips for Lentils in Sullivan County

Direct sow Lentils outdoors after April 29 in Sullivan 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 Sullivan County, NY?

Sullivan County is in Zone 5b with an average last frost of April 29. Plan your Lentils planting based on this frost date — see the calendar above for exact timing.

What planting zone is Sullivan County, NY?

Sullivan County, New York is in USDA Hardiness Zone 5b. The average last spring frost is April 29 and first fall frost is October 17.

🌱

Your Sullivan County Garden Planner — Free

A 24-page printable planner built for Sullivan County (Zone 5b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.

Instant PDF download. No spam, unsubscribe any time.

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Frost dates are based on 50% probability averages for Sullivan County, NY. Local conditions may vary. Last updated: April 2026.

Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.