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When to plant Portulaca in Becker County, MN

Becker County sits in cold Zone 4a. Plant Portulaca May 29–June 19 for the single annual harvest; the September 25 first frost closes the window.

When to Plant Portulaca in Becker County, MN

Becker County, Minnesota Zone 4a June

Becker County, Minnesota gardeners: here's your June plan

Your garden in Becker County, Minnesota is working on a schedule, even when you're not. Here's where you should be this June.

Avg. last frost May 15
Avg. first frost September 25
Soil temp (4") 60°F
Watering Low
Pest pressure Moderate
Daylight 15.7 hrs
  1. Get portulaca seeds going inside

    Label every cell. You will absolutely forget which is which otherwise.

July will be here before you know it — start on
  • First harvests: portulaca

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Portulaca (Portulaca grandiflora), commonly called moss rose, is a succulent- stemmed annual built for hot, dry, low-fertility conditions where other flowers fail. Its silky, rose-like blooms open in full sun and close at night or on cloudy days. Excellent for slopes, rock gardens, containers, and parking-strip plantings where irrigation is limited. One of the easiest annuals for neglect- proof summer color.

Becker County, Minnesota is in USDA Zone 4a. The average last spring frost is May 15 and the first fall frost is September 25, giving you a growing season of approximately 133 days.

At an elevation of 729 feet, Becker County receives approximately 35.2 inches of rainfall annually with predominantly silt loam soil. Summer highs average 78°F, so choose short-season varieties of Portulaca to ensure they mature before fall.

Annual Blooms in Summer Pollinator-friendly Deer-resistant
Becker County, MN (Zone 4a) Short season
133 days
Last Spring Frost May 15
133 growing days
First Fall Frost September 25

Becker County Soil Profile

Soil Type

Silt Loam

Soil pH

6.1-7.1

Drainage

Well Drained

Portulaca Planting Risk Windows

Early Start (70% safe) ✗ May not fit
Start indoors: Mar 29 Transplant: May 24 🌸 Bloom: Jul 12 – Sep 20
Recommended (50%) ✓ Fits season (0 days to spare)
Start indoors: Apr 3 Transplant: May 29 🌸 Bloom: Jul 17 – Sep 25
Safe Start (90%) ✓ Fits season (2 days to spare)
Start indoors: Apr 15 Transplant: Jun 10 🌸 Bloom: Jul 29 – Oct 7

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 Becker County

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

Soil pH

Your soil pH (6.1–7.1) overlaps with Portulaca's range (5.5–7.0), though not a perfect match.

Soil Texture

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

Drainage

Drainage is adequate for Portulaca.

Organic Matter

Organic matter is excellent (4.0%) — Portulaca will thrive.

How to Plant Portulaca

8"
Between Plants
10"
Between Rows

Succession Planting Portulaca

3
successive plantings in your 133-day season

Sow every 5.7 weeks. Last sowing by Jul 17 to harvest before frost.

Portulaca Water Budget

Plant needs
0.5″/week
Rainfall provides
1.1″/week
Watering frequency Natural rainfall sufficient
Season total 0 gal / 100 sq ft
Drought risk

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

Monthly Watering Guide for Portulaca

Portulaca needs approximately 0.5 inches of water per week (2.2" per month). Here's how your county's rainfall compares month by month.

Month Portulaca Needs Rainfall You Supplement Action
Jan 1.6" 0" ❄️ Dormant
Feb 1.4" 0" ❄️ Dormant
Mar 2.4" 0" ❄️ Dormant
Apr 3.1" 0" ❄️ Dormant
May 2.2" 4.5" 0" ✅ Rainfall sufficient
Jun 2.2" 3.9" 0" ✅ Rainfall sufficient
Jul 2.2" 4.2" 0" ✅ Rainfall sufficient
Aug 2.2" 3.7" 0" ✅ Rainfall sufficient
Sep 2.2" 3.4" 0" ✅ Rainfall sufficient
Oct 2.5" 0" ❄️ Dormant
Nov 2.5" 0" ❄️ Dormant
Dec 2.1" 0" ❄️ Dormant

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

Portulaca 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.

Portulaca needs ~510 GDD — county provides 1,130 GDD Excellent fit

Portulaca Planting Timeline — Becker County, MN

Portulaca Planting Calendar

Activity When Date Range
Start Indoors April 3 Apr 3 – Apr 17
Transplant Outdoors May 29 May 29 – Jun 12
Direct Sow May 29 May 29 – Jun 19
Bloom July 17 Jul 17 – Sep 25

· 8" apart · Rows 10" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.5"/week · Natural rainfall sufficient

📅 Days to Maturity

50–70 days

🧪 Soil pH

Needs 5.5–7 · Your soil: acceptable

🗺️ USDA Zone

Zone 4a

📆 Growing Season

133 days in Becker County

Growing Tips for Portulaca in Becker County

Direct sow Portulaca outdoors after May 15 in Becker County when soil has warmed and frost danger has passed.

General growing tips

Direct-sow after last frost once soil warms to 65°F, or start indoors 4–6 weeks before last frost. Seed is tiny — surface sow and do not cover. Thin to proper spacing after germination. Thrives in poor, well-drained soil; rich or wet soil produces lush foliage but fewer blooms. No deadheading required — plants are self-cleaning. Double-flowered varieties hold blooms open longer in overcast conditions.

Companion Planting

Good Companions

Check more plant combinations with our Companion Planting Checker →

Frequently Asked Questions

When should I plant Portulaca in Becker County, MN?

Becker County is in Zone 4a with an average last frost of May 15. Plan your Portulaca planting based on this frost date — see the calendar above for exact timing.

What planting zone is Becker County, MN?

Becker County, Minnesota is in USDA Hardiness Zone 4a. The average last spring frost is May 15 and first fall frost is September 25.

When should I plant Portulaca in Becker County, MN?

In Becker County, MN, plant Portulaca after the last frost (around May 15) and before the first frost (around September 25). Best results when soil holds above 50°F.

What growing zone is Becker County, MN for Portulaca?

Becker County sits in USDA Zone 4a. Portulaca grows reliably in zones 3a through 11b, so it's a good fit here.

Can Portulaca grow in Becker County's climate?

Yes — Portulaca grows well in Becker County's temperate climate. Becker County averages a 133-day frost-free season, with last frost around May 15 and first frost around September 25.

🌱

Your Becker County Garden Planner — Free

A 22-page printable planner built for Becker County (Zone 4a). 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 Becker County, MN. Local conditions may vary. Last updated: June 2026.

Sources & credits

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