When to plant New Zealand Spinach in Marion County County,
Aim to plant New Zealand Spinach in Marion County County on or after May 8; the window stays open through May 29. Marion County County's 159-day frost-free season gives you a single solid spring crop with a brief fall option.
When to Plant New Zealand Spinach in Marion County, IA
Your June game plan for Marion County, Iowa
Welcome to June in Zone 5b. These are the moves that will have the biggest impact on your growing season.
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Time to start new zealand spinach inside
These need a head start before your last frost (May 1). Sow into cells now so you're ready to transplant in a few weeks.
Coming up in July — start thinking about
- First harvests: new zealand spinach
New Zealand spinach is a heat-tolerant ground-cover plant with thick, triangular leaves that taste similar to true spinach. It thrives in hot weather when regular spinach bolts.
Marion County, Iowa is in USDA Zone 5b. The average last spring frost is May 1 and the first fall frost is October 7, giving you a growing season of approximately 159 days.
At an elevation of 971 feet, Marion County receives approximately 33.2 inches of rainfall annually with predominantly silt loam soil. Summer highs average 84°F, so choose short-season varieties of New Zealand Spinach to ensure they mature before fall.
Marion County Soil Profile
Soil Type
Silt Loam
Soil pH
6.2-7.2
Drainage
Well Drained
New Zealand Spinach 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 Marion County
How your county's soil matches New Zealand Spinach's growing requirements.
Soil pH
Your soil pH (6.2–7.2) is within New Zealand Spinach's preferred range (6.0–7.5).
Soil Texture
The silt loam soil in Marion County is excellent for New Zealand Spinach — good drainage, moisture retention, and nutrient holding capacity.
Organic Matter
Organic matter is excellent (5.0%) — New Zealand Spinach will thrive.
How to Plant New Zealand Spinach
Succession Planting New Zealand Spinach
Sow every 6.3 weeks. Last sowing by Jul 29 to harvest before frost.
New Zealand Spinach Water Budget
Monthly Watering Guide for New Zealand Spinach
New Zealand Spinach needs approximately 1 inches of water per week (4.3" per month). Here's how your county's rainfall compares month by month.
| Month | New Zealand Spinach Needs | Rainfall | You Supplement | Action |
|---|---|---|---|---|
| Jan | — | 1.5" | 0" | ❄️ Dormant |
| Feb | — | 1.5" | 0" | ❄️ Dormant |
| Mar | — | 2.3" | 0" | ❄️ Dormant |
| Apr | — | 3.2" | 0" | ❄️ Dormant |
| May | 4.3" | 4.1" | 0.2" | 💧 Light watering |
| Jun | 4.3" | 4.1" | 0.2" | 💧 Light watering |
| Jul | 4.3" | 3.8" | 0.5" | 💧 Light watering |
| Aug | 4.3" | 3" | 1.3" | 💧 Light watering |
| Sep | 4.3" | 2.8" | 1.5" | 💧 Light watering |
| Oct | 4.3" | 2.7" | 1.6" | 💧 Light watering |
| Nov | — | 2.3" | 0" | ❄️ Dormant |
| Dec | — | 1.9" | 0" | ❄️ Dormant |
Water needs are for active growing months only (May–Oct in Marion County). Supplement amounts are based on average rainfall — actual needs vary with temperature, soil, and mulching.
New Zealand 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.
New Zealand Spinach Planting Timeline — Marion County, IA
New Zealand Spinach Planting Calendar
| Activity | When | Date Range |
|---|---|---|
| Start Indoors | March 6 | Mar 6 – Mar 20 |
| Transplant Outdoors | May 15 | May 15 – May 29 |
| Direct Sow | May 8 | May 8 – May 29 |
| Harvest | July 10 | Jul 10 – Aug 7 |
Plant 0.5" deep · 6" apart · Rows 12" apart
Month-by-Month Timeline
| Month | Activities |
|---|---|
| January | — |
| February | — |
| March | Start Indoors |
| April | — |
| May | Transplant Outdoors Direct Sow |
| June | — |
| July | Harvest |
| August | Harvest |
| September | — |
| October | — |
| November | — |
| December | — |
Growing Conditions
☀️ Sun
Full Sun (6-8+ hours)
💧 Water
1"/week · Only during dry spells
📅 Days to Maturity
55–70 days
🧪 Soil pH
Needs 6–7.5 · Your soil: ideal
🗺️ USDA Zone
Zone 5b
📆 Growing Season
159 days in Marion County
Growing Tips for New Zealand Spinach in Marion County
Direct sow New Zealand Spinach outdoors after May 01 in Marion County when soil has warmed and frost danger has passed.
General growing tips
Soak seeds overnight before planting. Direct sow after last frost. Pinch growing tips regularly to encourage bushy growth and tender new leaves.
Companion Planting
Good Companions
Check more plant combinations with our Companion Planting Checker →
New Zealand Spinach in Other Locations
Frequently Asked Questions
When should I plant New Zealand Spinach in Marion County, IA?
Marion County is in Zone 5b with an average last frost of May 1. Plan your New Zealand Spinach planting based on this frost date — see the calendar above for exact timing.
What planting zone is Marion County, IA?
Marion County, Iowa is in USDA Hardiness Zone 5b. The average last spring frost is May 1 and first fall frost is October 7.
When should I plant New Zealand Spinach in Marion County County, ?
In Marion County County, , plant New Zealand Spinach after the last frost (around May 1) and before the first frost (around October 7). Best results when soil holds above 50°F.
What growing zone is Marion County County, for New Zealand Spinach?
Marion County County sits in USDA Zone 5b. New Zealand Spinach grows reliably in zones 5a through 11b, so it's a good fit here.
Can New Zealand Spinach grow in Marion County County's climate?
Yes — New Zealand Spinach grows well in Marion County County's temperate climate. Marion County County averages a 159-day frost-free season, with last frost around May 1 and first frost around October 7.
Your Marion County Garden Planner — Free
A 22-page printable planner built for Marion County (Zone 5b). Planting dates, a month-by-month schedule, harvest log, seed inventory, and succession charts — all dialed in for your exact growing season.