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When to Plant Valerian in Scotts Bluff County, NE

Scotts Bluff County, Nebraska Zone 5a May

This month in Scotts Bluff County, Nebraska

Your garden in Scotts Bluff County, Nebraska is working on a schedule, even when you're not. Here's where you should be this May.

Avg. last frost May 13
Avg. first frost September 25
Soil temp (4") 56°F
Watering Low
Pest pressure Low
Daylight 14.4 hrs
  1. Move valerian from tray to bed

    Water the tray well an hour before you transplant. Roots slide out cleanly and settle in faster.

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Valerian is a tall perennial herb with fragrant white or pink flower clusters, valued for its root which is used as a natural sleep aid. It attracts pollinators and earthworms.

Scotts Bluff County, Nebraska is in USDA Zone 5a. The average last spring frost is May 13 and the first fall frost is September 25, giving you a growing season of approximately 135 days.

At an elevation of 1,080 feet, Scotts Bluff County receives approximately 32.2 inches of rainfall annually with predominantly loam soil. Summer highs average 83°F, so choose short-season varieties of Valerian to ensure they mature before fall.

Scotts Bluff County, NE (Zone 5a) Short season
135 days
Last Spring Frost May 13
135 growing days
First Fall Frost September 25

Scotts Bluff County Soil Profile

Soil Type

Loam

Soil pH

6.3-7.5

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Transplant: May 15 🍅 Harvest: Sep 18 – Oct 30
Recommended (50%) ✗ May not fit
Transplant: May 20 🍅 Harvest: Sep 23 – Nov 4
Safe Start (90%) ✗ May not fit
Transplant: Jun 15 🍅 Harvest: Oct 19 – Nov 30

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 Scotts Bluff County

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

Soil pH

Your soil pH (6.3–7.5) overlaps with Valerian's range (5.5–7.0), though not a perfect match.

Soil Texture

The loam soil in Scotts Bluff County is excellent for Valerian — good drainage, moisture retention, and nutrient holding capacity.

Drainage

Drainage is adequate for Valerian.

Organic Matter

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

How to Plant Valerian

0.5"
Planting Depth
8"
Between Plants
12"
Between Rows

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
1.0″/week
You supply
0.4″/week
Watering frequency 1-2 times/week
Season total 430 gal / 100 sq ft
Drought risk

Water stress score is 6/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Valerian

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

Month Valerian Needs Rainfall You Supplement Action
Jan 2.1" 0" ❄️ Dormant
Feb 1.9" 0" ❄️ Dormant
Mar 2.6" 0" ❄️ Dormant
Apr 3" 0" ❄️ Dormant
May 4.3" 4.1" 0.2" 💧 Light watering
Jun 4.3" 2.2" 2.1" 💧 Light watering
Jul 4.3" 3.3" 1" 💧 Light watering
Aug 4.3" 3.9" 0.4" 💧 Light watering
Sep 4.3" 2.6" 1.7" 💧 Light watering
Oct 2.9" 0" ❄️ Dormant
Nov 2" 0" ❄️ Dormant
Dec 1.7" 0" ❄️ Dormant

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

Valerian 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.

Valerian needs ~1,838 GDD — county provides 1,653 GDD May not mature

Valerian Planting Timeline — Scotts Bluff County, NE

Valerian Planting Calendar

Activity When Date Range
Transplant Outdoors May 20 May 20 – Jun 3
Harvest September 23 Sep 23 – Nov 4

Plant 0.5" deep · 8" apart · Rows 12" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Partial Shade (3-6 hours)

💧 Water

1"/week · 1-2 times/week

📅 Days to Maturity

120–180 days

🧪 Soil pH

Needs 5.5–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 5a

📆 Growing Season

135 days in Scotts Bluff County

Growing Tips for Valerian in Scotts Bluff County

Direct sow Valerian outdoors after May 13 in Scotts Bluff County when soil has warmed and frost danger has passed.

Your 135.0-day growing season in Scotts Bluff County is tight for Valerian (120.0-180.0 days to maturity). Start indoors and choose early-maturing varieties.

General growing tips

Start seeds indoors and transplant after last frost. Harvest roots in fall of the second year. Deadhead flowers unless you want self-seeding. Cats are attracted to valerian root.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Valerian in Scotts Bluff County, NE?

Scotts Bluff County is in Zone 5a with an average last frost of May 13. Plan your Valerian planting based on this frost date — see the calendar above for exact timing.

What planting zone is Scotts Bluff County, NE?

Scotts Bluff County, Nebraska is in USDA Hardiness Zone 5a. The average last spring frost is May 13 and first fall frost is September 25.

🌱

Your Scotts Bluff County Garden Planner — Free

A 24-page printable planner built for Scotts Bluff County (Zone 5a). 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 Scotts Bluff County, NE. Local conditions may vary. Last updated: May 2026.

Sources & credits

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