When to Plant Spinach in Zone 4

Zone 4 Planting Schedule

Start Indoors

Apr 12

6–8 weeks before transplant

Transplant Out

May 10

After last frost (May 10)

Direct Sow

May 10

Directly in garden bed

First Harvest

Jun 23

35–50 days after planting

Season Ends

Aug 7

Before first frost (Sep 25)

Quick Facts

Sunlight ⛅ Partial Sun

Water Needs 💧💧 Moderate

Spacing 6 inches apart

Planting Depth 0.5 inch

Min Soil Temp 35°F

Germination 5–14 days

Days to Maturity 35–50 days

Frost Tolerance Heavy frost tolerance

Soil pH 6.5–7.5

Difficulty Easy

Recommended for Zone 4

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Companion Planting

Companion planting improves growth, deters pests, and makes better use of garden space.

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Strawberry Peas

Spinach Schedule — All Zones

Zone	Start Indoors	Transplant	Direct Sow	Harvest Start	Harvest End
Zone 3	Apr 17	May 15	May 15	Jun 28	Aug 12
Zone 4	Apr 12	May 10	May 10	Jun 23	Aug 7
Zone 5	Apr 2	Apr 30	Apr 30	Jun 13	Jul 28
Zone 6	Mar 18	Apr 15	Apr 15	May 29	Jul 13
Zone 7	Mar 8	Apr 5	Apr 5	May 19	Jul 3
Zone 8	Feb 20	Mar 20	Mar 20	May 3	Jun 17
Zone 9	Jan 31	Feb 28	Feb 28	Apr 13	May 28
Zone 10	Jan 13	Feb 10	Feb 10	Mar 26	May 10
Zone 11	Jan 1	Jan 15	Jan 15	Feb 28	Apr 14
Zone 12	—	any	any	year_round	year_round
Zone 13	—	any	any	year_round	year_round

📚 Data Sources

Frost dates: NOAA Climate Normals 1991–2020, National Centers for Environmental Information.
Hardiness zones: USDA Plant Hardiness Zone Map, Agricultural Research Service.
Growing requirements: Cooperative Extension Services — NC State, Penn State, University of Florida IFAS.
Companion planting: Cornell University Cooperative Extension.
Data compiled from public agricultural sources. Always verify with your local extension office for micro-climate adjustments.