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When to Plant Daikon in Faulk County, SD

Faulk County, South Dakota Zone 4b May

May in the garden — Faulk County, South Dakota

A quick May briefing for Faulk County, South Dakota gardeners — what's urgent, what's next, and what can wait.

Avg. last frost May 11
Avg. first frost September 30
Soil temp (4") 53°F
Watering High
Pest pressure Low
Daylight 14.7 hrs
  1. Scatter daikon into prepared beds

    Keep the top inch of soil moist until germination — a gentle morning watering for 5–7 days does the job.

To set up a strong June, finish these tasks
  • First harvests: daikon

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Daikon is a large, mild Japanese radish that can grow over a foot long. It is excellent for pickling, stir-fries, and as a soil-breaking cover crop.

Faulk County, South Dakota is in USDA Zone 4b. The average last spring frost is May 11 and the first fall frost is September 30, giving you a growing season of approximately 142 days.

At an elevation of 964 feet, Faulk County receives approximately 20.7 inches of rainfall annually with predominantly loam soil. Summer highs average 84°F, so choose short-season varieties of Daikon to ensure they mature before fall.

Faulk County, SD (Zone 4b) Short season
142 days
Last Spring Frost May 11
142 growing days
First Fall Frost September 30

Faulk County Soil Profile

Soil Type

Loam

Soil pH

6.4-7.2

Drainage

Well Drained

Plant Planting Risk Windows

Early Start (70% safe) ✓ Fits season (60 days to spare)
Transplant: May 1 🍅 Harvest: Jun 26 – Jul 24
Recommended (50%) ✓ Fits season (58 days to spare)
Transplant: May 11 🍅 Harvest: Jul 6 – Aug 3
Safe Start (90%) ✓ Fits season (62 days to spare)
Transplant: May 20 🍅 Harvest: Jul 15 – Aug 12

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 Faulk County

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

Soil pH

Your soil pH (6.4–7.2) overlaps with Daikon's range (5.8–7.0), though not a perfect match.

Soil Texture

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

Organic Matter

Organic matter is moderate (3.2%). Annual compost additions will help Daikon.

How to Plant Daikon

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

Fall planting: Sow 12 weeks before your first frost date for a fall harvest.

Succession Planting Daikon

3
successive plantings in your 142-day season

Sow every 5.7 weeks. Last sowing by Jul 22 to harvest before frost.

For a dedicated fall crop, sow by Jul 08.

Plant Water Budget

Plant needs
1.0″/week
Rainfall provides
0.6″/week
You supply
0.5″/week
Watering frequency 1-2 times/week
Season total 588 gal / 100 sq ft
Drought risk

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

Monthly Watering Guide for Daikon

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

Month Daikon Needs Rainfall You Supplement Action
Jan 0.5" 0" ❄️ Dormant
Feb 0.8" 0" ❄️ Dormant
Mar 1.3" 0" ❄️ Dormant
Apr 2.2" 0" ❄️ Dormant
May 4.3" 2.7" 1.6" 💧 Light watering
Jun 4.3" 3.3" 1" 💧 Light watering
Jul 4.3" 2.6" 1.7" 💧 Light watering
Aug 4.3" 2.7" 1.6" 💧 Light watering
Sep 4.3" 1.8" 2.5" 🚿 Regular watering
Oct 1.4" 0" ❄️ Dormant
Nov 0.8" 0" ❄️ Dormant
Dec 0.6" 0" ❄️ Dormant

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

Daikon 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.

Daikon needs ~780 GDD — county provides 1,846 GDD Excellent fit

Daikon Planting Timeline — Faulk County, SD

Daikon Planting Calendar

Activity When Date Range
Direct Sow May 4 May 4 – May 25
Harvest June 29 Jun 29 – Jul 27
Fall Sowing July 8 Jul 8 – Jul 22

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

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

1"/week · 1-2 times/week

📅 Days to Maturity

50–70 days

🧪 Soil pH

Needs 5.8–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 4b

📆 Growing Season

142 days in Faulk County

Growing Tips for Daikon in Faulk County

Direct sow Daikon outdoors after May 11 in Faulk County when soil has warmed and frost danger has passed.

Common pests for Daikon in this region include cabbage worm and flea beetles. Use row covers early in the season and inspect plants weekly.

Faulk County receives only 21" of rain annually. Daikon needs consistent moisture — install drip irrigation or water deeply 2-3 times per week.

General growing tips

Direct sow in late summer for fall harvest. Loosen soil deeply before planting. Thin seedlings to 6 inches apart. Harvest before hard freeze as exposed shoulders may crack.

Companion Planting

Good Companions

Avoid Planting Near

  • Hyssop

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Daikon in Faulk County, SD?

Faulk County is in Zone 4b with an average last frost of May 11. Plan your Daikon planting based on this frost date — see the calendar above for exact timing.

What planting zone is Faulk County, SD?

Faulk County, South Dakota is in USDA Hardiness Zone 4b. The average last spring frost is May 11 and first fall frost is September 30.

🌱

Your Faulk County Garden Planner — Free

A 24-page printable planner built for Faulk County (Zone 4b). 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 Faulk County, SD. 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.