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When to plant Portulaca in Hardee County, FL

Portulaca planted in Hardee County between January 6 and January 27 matures in 50–70 days — well before the December 20 first frost.

When to Plant Portulaca in Hardee County, FL

Hardee County, Florida Zone 9b August

August in the garden — Hardee County, Florida

We've pulled the most time-sensitive tasks for Hardee County, Florida this August and put them front and centre. Tackle them in order.

Avg. last frost January 27
Avg. first frost December 20
Soil temp (4") 96°F
Watering Low
Pest pressure High
Daylight 13 hrs
  1. Basket week: portulaca

    Check every 1–2 days. Many of these get tough or go to seed if you wait too long.

September prep starts now
  • 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.

Hardee County, Florida is in USDA Zone 9b. The average last spring frost is January 27 and the first fall frost is December 20, giving you a growing season of approximately 327 days.

At an elevation of 374 feet, Hardee County receives approximately 59.8 inches of rainfall annually with predominantly sand soil. Summer highs average 102°F, so Portulaca may need afternoon shade and extra watering during peak heat. Sandy soil warms quickly in spring — great for early planting — but Portulaca will need more frequent watering and organic matter to retain nutrients. Ample rainfall means less supplemental watering, but ensure good drainage to prevent Portulaca root diseases.

Annual Blooms in Summer Pollinator-friendly Deer-resistant
Hardee County, FL (Zone 9b) Year-round
327 days
Last Spring Frost January 27
327 growing days
First Fall Frost December 20

Hardee County Soil Profile

Soil Type

Sand

Soil pH

4.9-5.8

Drainage

Well Drained

Portulaca Planting Risk Windows

Early Start (70% safe) ✓ Fits season (91 days to spare)
Start indoors: Dec 23 Transplant: Dec 30 🌸 Bloom: Feb 17 – Sep 8
Recommended (50%) ✓ Fits season (96 days to spare)
Start indoors: Dec 30 Transplant: Jan 6 🌸 Bloom: Feb 24 – Sep 15
Safe Start (90%) ✓ Fits season (76 days to spare)
Start indoors: Jan 24 Transplant: Jan 31 🌸 Bloom: Mar 21 – Oct 10

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 Hardee County

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

Soil pH

Your soil pH (4.9–5.8) is more acidic than Portulaca prefers (5.5–7.0). Add garden lime to raise pH.

Soil Texture

Sandy soil in Hardee County warms quickly in spring but drains fast. Portulaca will need more frequent watering and regular compost additions to retain nutrients.

Drainage

Drainage is adequate for Portulaca.

Organic Matter

Organic matter is low (1.3%). Add 2-3 inches of compost before planting Portulaca.

How to Plant Portulaca

8"
Between Plants
10"
Between Rows

Succession Planting Portulaca

7
successive plantings in your 327-day season

Sow every 5.7 weeks. Last sowing by Oct 11 to harvest before frost.

Portulaca Water Budget

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

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 2.2" 2.7" 0" ✅ Rainfall sufficient
Feb 2.2" 3.1" 0" ✅ Rainfall sufficient
Mar 2.2" 3.3" 0" ✅ Rainfall sufficient
Apr 2.2" 2.9" 0" ✅ Rainfall sufficient
May 2.2" 3.8" 0" ✅ Rainfall sufficient
Jun 2.2" 8.7" 0" ✅ Rainfall sufficient
Jul 2.2" 10.3" 0" ✅ Rainfall sufficient
Aug 2.2" 8.7" 0" ✅ Rainfall sufficient
Sep 2.2" 7.5" 0" ✅ Rainfall sufficient
Oct 2.2" 4.6" 0" ✅ Rainfall sufficient
Nov 2.2" 2.1" 0.1" 💧 Light watering
Dec 2.2" 2.1" 0.1" 💧 Light watering

Water needs are for active growing months only (Jan–Dec in Hardee 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 ~1,590 GDD — county provides 8,692 GDD Excellent fit

Portulaca Planting Timeline — Hardee County, FL

Portulaca Planting Calendar

Activity When Date Range
Start Indoors December 30 Dec 30 – Jan 13
Transplant Outdoors January 6 Jan 6 – Jan 20
Direct Sow January 6 Jan 6 – Jan 27
Bloom February 24 Feb 24 – Sep 15

· 8" apart · Rows 10" apart

Month-by-Month Timeline

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

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: too_acidic

🗺️ USDA Zone

Zone 9b

📆 Growing Season

327 days in Hardee County

Growing Tips for Portulaca in Hardee County

Direct sow Portulaca outdoors after January 27 in Hardee County when soil has warmed and frost danger has passed.

Sandy soil in Hardee County dries quickly — mulch Portulaca with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.

With summer highs reaching 102°F in Hardee County, provide afternoon shade for Portulaca and water deeply in the morning.

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 Hardee County, FL?

Hardee County is in Zone 9b with an average last frost of January 27. Plan your Portulaca planting based on this frost date — see the calendar above for exact timing.

What planting zone is Hardee County, FL?

Hardee County, Florida is in USDA Hardiness Zone 9b. The average last spring frost is January 27 and first fall frost is December 20.

When should I plant Portulaca in Hardee County, FL?

In Hardee County, FL, plant Portulaca after the last frost (around January 27) and before the first frost (around December 20). Best results when soil holds above 50°F.

What growing zone is Hardee County, FL for Portulaca?

Hardee County sits in USDA Zone 9b. Portulaca grows reliably in zones 3a through 11b, so it's a good fit here.

Can Portulaca grow in Hardee County's climate?

Yes — Portulaca grows well in Hardee County's temperate climate. Hardee County averages a 328-day frost-free season, with last frost around January 27 and first frost around December 20.

🌱

Your Hardee County Garden Planner — Free

A 22-page printable planner built for Hardee County (Zone 9b). 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 Hardee County, FL. Local conditions may vary. Last updated: August 2026.

Sources & credits

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