When to plant Portulaca in Jackson County County,
In Jackson County County, plant Portulaca in spring between February 16 and March 9, once soil temps hold above 50°F. Jackson County County's last frost averages March 2, so aim for a steady week of warm soil before planting. For a fall crop, sow between and — roughly 70 days before the first frost on November 26.
When to Plant Portulaca in Jackson County, MS
Your June planting checklist for Jackson County, Mississippi
Your Jackson County, Mississippi garden is entering a new phase. Here's what's on the schedule for June and why each task matters now.
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Bring in the portulaca
Taste as you pick. The first ripe produce is the best feedback loop you'll get all season.
Before July arrives, get these ready
- First harvests: portulaca
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.
Jackson County, Mississippi is in USDA Zone 9a. The average last spring frost is March 2 and the first fall frost is November 26, giving you a growing season of approximately 269 days.
At an elevation of 182 feet, Jackson County receives approximately 57.7 inches of rainfall annually with predominantly sandy loam soil. Summer highs average 91°F, providing good warmth for Portulaca during the growing season. 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.
Jackson County Soil Profile
Soil Type
Sandy Loam
Soil pH
5.1-6.1
Drainage
Well Drained
Portulaca Planting Risk Windows
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 Jackson County
How your county's soil matches Portulaca's growing requirements.
Soil pH
Your soil pH (5.1–6.1) overlaps with Portulaca's range (5.5–7.0), though not a perfect match.
Soil Texture
Sandy soil in Jackson County warms quickly in spring but drains fast. Portulaca will need more frequent watering and regular compost additions to retain nutrients.
Drainage
Portulaca prefers dry conditions but your soil drains poorly. Use raised beds or mounded rows to prevent root rot.
Organic Matter
Organic matter is moderate (2.2%). Annual compost additions will help Portulaca.
How to Plant Portulaca
Succession Planting Portulaca
Sow every 5.7 weeks. Last sowing by Sep 17 to harvest before frost.
Portulaca Water Budget
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 | — | 5.3" | 0" | ❄️ Dormant |
| Feb | — | 4.5" | 0" | ❄️ Dormant |
| Mar | 2.2" | 5.1" | 0" | ✅ Rainfall sufficient |
| Apr | 2.2" | 4.5" | 0" | ✅ Rainfall sufficient |
| May | 2.2" | 5.1" | 0" | ✅ Rainfall sufficient |
| Jun | 2.2" | 4.7" | 0" | ✅ Rainfall sufficient |
| Jul | 2.2" | 6.2" | 0" | ✅ Rainfall sufficient |
| Aug | 2.2" | 4.8" | 0" | ✅ Rainfall sufficient |
| Sep | 2.2" | 4.9" | 0" | ✅ Rainfall sufficient |
| Oct | 2.2" | 3.8" | 0" | ✅ Rainfall sufficient |
| Nov | 2.2" | 4.4" | 0" | ✅ Rainfall sufficient |
| Dec | — | 4.4" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Mar–Nov in Jackson 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 Planting Timeline — Jackson County, MS
Portulaca Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | February 2 | Feb 2 – Feb 16 |
| Transplant Outdoors | February 16 | Feb 16 – Mar 2 |
| Direct Sow | February 16 | Feb 16 – Mar 9 |
| Bloom | April 6 | Apr 6 – Oct 12 |
· 8" apart · Rows 10" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Start Indoors Transplant Outdoors Direct Sow |
| March | Transplant Outdoors Direct Sow |
| April | Bloom |
| May | Bloom |
| June | Bloom |
| July | Bloom |
| August | Bloom |
| September | Bloom |
| October | Bloom |
| 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 9a
📆 Growing Season
269 days in Jackson County
Growing Tips for Portulaca in Jackson County
Direct sow Portulaca outdoors after March 02 in Jackson County when soil has warmed and frost danger has passed.
Sandy soil in Jackson County dries quickly — mulch Portulaca with 2-3 inches of straw and water deeply 2-3 times per week rather than lightly every day.
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 →
Portulaca in Other Locations
Frequently Asked Questions
When should I plant Portulaca in Jackson County, MS?
Jackson County is in Zone 9a with an average last frost of March 2. Plan your Portulaca planting based on this frost date — see the calendar above for exact timing.
What planting zone is Jackson County, MS?
Jackson County, Mississippi is in USDA Hardiness Zone 9a. The average last spring frost is March 2 and first fall frost is November 26.
When should I plant Portulaca in Jackson County County, ?
In Jackson County County, , plant Portulaca after the last frost (around March 2) and before the first frost (around November 26). Best results when soil holds above 50°F.
What growing zone is Jackson County County, for Portulaca?
Jackson County County sits in USDA Zone 9a. Portulaca grows reliably in zones 3a through 11b, so it's a good fit here.
Can Portulaca grow in Jackson County County's climate?
Yes — Portulaca grows well in Jackson County County's temperate climate. Jackson County County averages a 269-day frost-free season, with last frost around March 2 and first frost around November 26.
Your Jackson County Garden Planner — Free
A 22-page printable planner built for Jackson County (Zone 9a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.