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When to Plant Beets in Elmore County, ID

Elmore County, Idaho Zone 7a May

Your May game plan for Elmore County, Idaho

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

Avg. last frost April 27
Avg. first frost October 14
Soil temp (4") 47°F
Watering High
Pest pressure Low
Daylight 14.5 hrs
Before June arrives, get these ready
  • First harvests: beets

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Beets are a dual-purpose root vegetable with edible roots and nutritious greens. They come in red, golden, and striped varieties and are rich in vitamins and minerals.

Elmore County, Idaho is in USDA Zone 7a. The average last spring frost is April 27 and the first fall frost is October 14, giving you a growing season of approximately 170 days.

At an elevation of 5,944 feet, Elmore County receives approximately 20.3 inches of rainfall annually with predominantly loam soil. Summer highs average 88°F, providing good warmth for Beets during the growing season.

Elmore County, ID (Zone 7a) Moderate season
170 days
Last Spring Frost April 27
170 growing days
First Fall Frost October 14

Elmore County Soil Profile

Soil Type

Loam

Soil pH

6.7-8.3

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (92 days to spare)
Transplant: Apr 14 🍅 Harvest: Jun 9 – Jul 7
Recommended (50%) ✓ Fits season (86 days to spare)
Transplant: Apr 27 🍅 Harvest: Jun 22 – Jul 20
Safe Start (90%) ✓ Fits season (85 days to spare)
Transplant: May 19 🍅 Harvest: Jul 14 – Aug 11

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 Elmore County

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

Soil pH

Your soil pH (6.7–8.3) overlaps with Beets's range (6.0–7.5), though not a perfect match.

Soil Texture

The loam soil in Elmore County is excellent for Beets — good drainage, moisture retention, and nutrient holding capacity.

Drainage

Drainage is adequate for Beets.

Organic Matter

Organic matter is moderate (2.7%). Annual compost additions will help Beets.

How to Plant Beets

0.5"
Planting Depth
4"
Between Plants
12"
Between Rows

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

Succession Planting Beets

4
successive plantings in your 170-day season

Sow every 5.7 weeks. Last sowing by Aug 05 to harvest before frost.

For a dedicated fall crop, sow by Aug 05.

Plant Water Budget

Plant needs
0.8″/week
Rainfall provides
0.5″/week
You supply
0.7″/week
Watering frequency 1-2 times/week
Season total 978 gal / 100 sq ft
Drought risk

Water stress score is 8/10 — consider drought-tolerant varieties and mulching

Monthly Watering Guide for Beets

Beets needs approximately 0.8 inches of water per week (3.5" per month). Here's how your county's rainfall compares month by month.

Month Beets Needs Rainfall You Supplement Action
Jan 1.6" 0" ❄️ Dormant
Feb 1.3" 0" ❄️ Dormant
Mar 1.7" 0" ❄️ Dormant
Apr 3.5" 1.9" 1.6" 💧 Light watering
May 3.5" 2.7" 0.8" 💧 Light watering
Jun 3.5" 1.6" 1.9" 🚿 Regular watering
Jul 3.5" 1.6" 1.9" 🚿 Regular watering
Aug 3.5" 1.9" 1.6" 💧 Light watering
Sep 3.5" 1.6" 1.9" 🚿 Regular watering
Oct 3.5" 1.7" 1.8" 🚿 Regular watering
Nov 1.4" 0" ❄️ Dormant
Dec 1.2" 0" ❄️ Dormant

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

Beets 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.

Beets needs ~960 GDD — county provides 2,720 GDD Excellent fit

Beets Planting Timeline — Elmore County, ID

Beets Planting Calendar

Activity When Date Range
Direct Sow April 13 Apr 13 – May 4
Harvest June 8 Jun 8 – Jul 6
Fall Sowing August 5 Aug 5 – Aug 19

Plant 0.5" deep · 4" apart · Rows 12" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.8"/week · 1-2 times/week

📅 Days to Maturity

50–70 days

🧪 Soil pH

Needs 6–7.5 · Your soil: acceptable

🗺️ USDA Zone

Zone 7a

📆 Growing Season

170 days in Elmore County

Growing Tips for Beets in Elmore County

Direct sow Beets outdoors after April 27 in Elmore County when soil has warmed and frost danger has passed.

General growing tips

Soak seeds overnight before planting to improve germination. Thin seedlings to 3-4 inches apart. Harvest roots when 1.5-3 inches in diameter for best texture.

Companion Planting

Good Companions

Avoid Planting Near

  • Pole Beans
  • Mustard Greens

Check more plant combinations with our Companion Planting Checker →

🌾 Save Your Own Beets Seeds
Life Cycle Biennial
Pollination Wind Pollinated
How to Collect Replant roots for 2nd-year seeds. Rub stalks to free clusters.
Storage Store airtight; viable 6 years at 35°F, under 50% humidity.

Isolate 1/2 mile from Swiss chard — same species, they will cross.

Frequently Asked Questions

When should I plant Beets in Elmore County, ID?

Elmore County is in Zone 7a with an average last frost of April 27. Plan your Beets planting based on this frost date — see the calendar above for exact timing.

What planting zone is Elmore County, ID?

Elmore County, Idaho is in USDA Hardiness Zone 7a. The average last spring frost is April 27 and first fall frost is October 14.

🌱

Your Elmore County Garden Planner — Free

A 24-page printable planner built for Elmore County (Zone 7a). 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 Elmore County, ID. 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.