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When to plant Portulaca in Baca County, CO

For Baca County, gardeners: plant Portulaca April 26 through May 17 once soil reads 50°F.

When to Plant Portulaca in Baca County, CO

Baca County, Colorado Zone 6b June

Baca County, Colorado gardeners: here's your June plan

We've pulled the most time-sensitive tasks for Baca County, Colorado this June and put them front and centre. Tackle them in order.

Avg. last frost April 19
Avg. first frost October 18
Soil temp (4") 61°F
Watering Critical
Pest pressure High
Daylight 14.6 hrs
  1. Start harvesting portulaca

    The more you pick, the more the plant produces. Letting fruit overripen tells the plant it's time to stop.

A few tasks this June that'll pay off in July
  • 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.

Baca County, Colorado is in USDA Zone 6b. The average last spring frost is April 19 and the first fall frost is October 18, giving you a growing season of approximately 182 days.

At an elevation of 4,958 feet, Baca County receives approximately 12.3 inches of rainfall annually with predominantly loam soil. Summer highs average 90°F, providing good warmth for Portulaca during the growing season. With low rainfall, drip irrigation is essential for growing Portulaca successfully. Mulch heavily to conserve soil moisture.

Annual Blooms in Summer Pollinator-friendly Deer-resistant
Baca County, CO (Zone 6b) Moderate season
182 days
Last Spring Frost April 19
182 growing days
First Fall Frost October 18

Baca County Soil Profile

Soil Type

Loam

Soil pH

6.3-7.9

Drainage

Well Drained

Portulaca Planting Risk Windows

Early Start (70% safe) ✓ Fits season (14 days to spare)
Start indoors: Mar 10 Transplant: Apr 21 🌸 Bloom: Jun 9 – Sep 29
Recommended (50%) ✓ Fits season (14 days to spare)
Start indoors: Mar 15 Transplant: Apr 26 🌸 Bloom: Jun 14 – Oct 4
Safe Start (90%) ✓ Fits season (15 days to spare)
Start indoors: Mar 30 Transplant: May 11 🌸 Bloom: Jun 29 – Oct 19

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 Baca County

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

Soil pH

Your soil pH (6.3–7.9) is more alkaline than Portulaca prefers (5.5–7.0). Add sulfur or peat moss to lower pH.

Soil Texture

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

Organic Matter

Organic matter is moderate (2.4%). Annual compost additions will help Portulaca.

How to Plant Portulaca

8"
Between Plants
10"
Between Rows

Succession Planting Portulaca

4
successive plantings in your 182-day season

Sow every 5.7 weeks. Last sowing by Aug 09 to harvest before frost.

Portulaca Water Budget

Plant needs
0.5″/week
Rainfall provides
0.3″/week
You supply
0.3″/week
Watering frequency Only during dry spells
Season total 420 gal / 100 sq ft
Drought risk

Water stress score is 8/10 — 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 0.8" 0" ❄️ Dormant
Feb 0.7" 0" ❄️ Dormant
Mar 1" 0" ❄️ Dormant
Apr 2.2" 1.3" 0.9" 💧 Light watering
May 2.2" 1.4" 0.8" 💧 Light watering
Jun 2.2" 1" 1.2" 🚿 Regular watering
Jul 2.2" 1" 1.2" 🚿 Regular watering
Aug 2.2" 1.2" 1" 💧 Light watering
Sep 2.2" 1.1" 1.1" 🚿 Regular watering
Oct 2.2" 1.1" 1.1" 🚿 Regular watering
Nov 0.8" 0" ❄️ Dormant
Dec 0.7" 0" ❄️ Dormant

Water needs are for active growing months only (Apr–Oct in Baca 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 ~1,050 GDD — county provides 3,185 GDD Excellent fit

Portulaca Planting Timeline — Baca County, CO

Portulaca Planting Calendar

Activity When Date Range
Start Indoors March 15 Mar 15 – Mar 29
Transplant Outdoors April 26 Apr 26 – May 10
Direct Sow April 26 Apr 26 – May 17
Bloom June 14 Jun 14 – Oct 4

· 8" apart · Rows 10" apart

Month-by-Month Timeline

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

Growing Conditions

☀️ Sun

Full Sun (6-8+ hours)

💧 Water

0.5"/week · Only during dry spells

📅 Days to Maturity

50–70 days

🧪 Soil pH

Needs 5.5–7 · Your soil: too_alkaline

🗺️ USDA Zone

Zone 6b

📆 Growing Season

182 days in Baca County

Growing Tips for Portulaca in Baca County

Direct sow Portulaca outdoors after April 19 in Baca County when soil has warmed and frost danger has passed.

Baca County receives only 12" of rain annually. Portulaca needs consistent moisture — install drip irrigation or water deeply 2-3 times per week.

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 Baca County, CO?

Baca County is in Zone 6b with an average last frost of April 19. Plan your Portulaca planting based on this frost date — see the calendar above for exact timing.

What planting zone is Baca County, CO?

Baca County, Colorado is in USDA Hardiness Zone 6b. The average last spring frost is April 19 and first fall frost is October 18.

When should I plant Portulaca in Baca County, CO?

In Baca County, CO, plant Portulaca after the last frost (around April 19) and before the first frost (around October 18). Best results when soil holds above 50°F.

What growing zone is Baca County, CO for Portulaca?

Baca County sits in USDA Zone 6b. Portulaca grows reliably in zones 3a through 11b, so it's a good fit here.

Can Portulaca grow in Baca County's climate?

Yes — Portulaca grows well in Baca County's temperate climate. Baca County averages a 182-day frost-free season, with last frost around April 19 and first frost around October 18.

🌱

Your Baca County Garden Planner — Free

A 22-page printable planner built for Baca County (Zone 6b). 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 Baca County, CO. Local conditions may vary. Last updated: June 2026.

Sources & credits

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