When to Plant Spinach in Ouachita County, AR
Ouachita County, Arkansas gardeners: here's your May plan
Here's what deserves your attention in Ouachita County, Arkansas this month. Everything below is tailored to Zone 8a and timed around your local frost dates.
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It's harvest week for spinach
Morning harvests are best — cooler temperatures mean crisper produce and longer fridge life.
June prep starts now
- First harvests: spinach
Spinach is a nutrient-packed cool-season green that grows quickly in spring and fall. It is rich in iron, vitamins, and antioxidants and excellent raw or cooked.
Ouachita County, Arkansas is in USDA Zone 8a. The average last spring frost is March 23 and the first fall frost is November 3, giving you a growing season of approximately 225 days.
At an elevation of 591 feet, Ouachita County receives approximately 48.8 inches of rainfall annually with predominantly silt loam soil. Summer highs average 95°F, so Spinach may need afternoon shade and extra watering during peak heat.
Ouachita County Soil Profile
Soil Type
Silt Loam
Soil pH
5.6-7.1
Drainage
Well Drained
Plant 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 Ouachita County
How your county's soil matches Spinach's growing requirements.
Soil pH
Your soil pH (5.6–7.1) is more acidic than Spinach prefers (6.5–7.5). Add garden lime to raise pH.
Soil Texture
The silt loam soil in Ouachita County is excellent for Spinach — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is moderate (2.8%). Annual compost additions will help Spinach.
How to Plant Spinach
Fall planting: Sow 10 weeks before your first frost date for a fall harvest.
Succession Planting Spinach
Sow every 4 weeks. Last sowing by Sep 14 to harvest before frost.
For a dedicated fall crop, sow by Aug 25.
Plant Water Budget
Monthly Watering Guide for Spinach
Spinach needs approximately 0.7 inches of water per week (3" per month). Here's how your county's rainfall compares month by month.
| Month | Spinach Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 4.2" | 0" | ❄️ Dormant |
| Feb | — | 3.4" | 0" | ❄️ Dormant |
| Mar | 3" | 4.4" | 0" | ✅ Rainfall sufficient |
| Apr | 3" | 3.4" | 0" | ✅ Rainfall sufficient |
| May | 3" | 4.1" | 0" | ✅ Rainfall sufficient |
| Jun | 3" | 3.9" | 0" | ✅ Rainfall sufficient |
| Jul | 3" | 5.6" | 0" | ✅ Rainfall sufficient |
| Aug | 3" | 4.8" | 0" | ✅ Rainfall sufficient |
| Sep | 3" | 4.1" | 0" | ✅ Rainfall sufficient |
| Oct | 3" | 3.4" | 0" | ✅ Rainfall sufficient |
| Nov | 3" | 4" | 0" | ✅ Rainfall sufficient |
| Dec | — | 3.4" | 0" | ❄️ Dormant |
Water needs are for active growing months only (Mar–Nov in Ouachita County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
Spinach 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.
Spinach Planting Timeline — Ouachita County, AR
Spinach Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | February 16 | Feb 16 – Mar 2 |
| Transplant Outdoors | March 23 | Mar 23 – Apr 6 |
| Direct Sow | March 9 | Mar 9 – Mar 30 |
| Harvest | April 27 | Apr 27 – Jun 29 |
| Fall Sowing | August 25 | Aug 25 – Sep 8 |
Plant 0.5" deep · 6" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | Start Indoors |
| March | Start Indoors Transplant Outdoors Direct Sow |
| April | Transplant Outdoors Harvest |
| May | Harvest |
| June | Harvest |
| July | — |
| August | Fall Sowing |
| September | Fall Sowing |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Partial Shade (3-6 hours)
💧 Water
0.7"/week · Natural rainfall sufficient
📅 Days to Maturity
35–50 days
🧪 Soil pH
Needs 6.5–7.5 · Your soil: too_acidic
🗺️ USDA Zone
Zone 8a
📆 Growing Season
225 days in Ouachita County
Growing Tips for Spinach in Ouachita County
Direct sow Spinach outdoors after March 23 in Ouachita County when soil has warmed and frost danger has passed.
Summer highs in Ouachita County reach 95°F — grow Spinach as a spring or fall crop. Use shade cloth if planting in summer.
Your generous 225.0-day season in Ouachita County allows multiple plantings of Spinach. Sow every 17.0 days for continuous harvest.
General growing tips
Direct sow as soon as soil can be worked in spring. Plant in partial shade for summer crops to delay bolting. Succession plant every 2 weeks for continuous harvest.
Recommended Spinach Varieties for Ouachita County
Slow-bolting spinach for warm springs — best as fall crop here
Companion Planting
Good Companions
Check more plant combinations with our Companion Planting Checker →
Wind pollinated — isolate 1/2 mile for purity. Easy to let bolt in heat.
Spinach in Other Locations
Frequently Asked Questions
When should I plant Spinach in Ouachita County, AR?
Ouachita County is in Zone 8a with an average last frost of March 23. Plan your Spinach planting based on this frost date — see the calendar above for exact timing.
What planting zone is Ouachita County, AR?
Ouachita County, Arkansas is in USDA Hardiness Zone 8a. The average last spring frost is March 23 and first fall frost is November 3.
Your Ouachita County Garden Planner — Free
A 24-page printable planner built for Ouachita County (Zone 8a). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.