Nutrient-packed cool-season green loaded with iron and vitamins. Quick to mature and cold-hardy. One of the first crops to plant in spring and last in fall.
Planting calendar
Direct sow / transplant
6 weeks before your last spring frost.
Fall planting
6 weeks before your first fall frost.
Extremely cold-hardy; can overwinter with mulch for early spring harvest
Spacing & harvest
Plant spacing: 4-6 inches
Row spacing: 12-18 inches
Days to harvest: 35-50 days
Ready when: Leaves are dark green and 3-4 inches long; harvest outer leaves or cut entire rosette above crown
Companion planting
Plant near
Strawberry — Saponins in spinach roots benefit strawberry growth
Radish — Fast radishes mature and clear before spinach needs space
Green Bean — Provides shade for heat-sensitive spinach
Get spinach planting dates for your exact zone
Lawn Guardian turns this guidance into a schedule timed to your USDA zone and this week's actual weather — and adapts every time you log what you've done.