Regiment

Spinach

Zone 9b Save Garden

🌱 45d to harvest Rosette

Tender, savoyed leaves unfurl with a velvety, crinkled texture and a deep, lively green that feels almost luminous in the garden.…

Crop Dates

Milestone	Date
Start Indoors	Jan 12th
Last Frost	Feb 9th
Transplant / Sow Outdoors	Feb 2nd
Harvest Begins	Mar 19th
Harvest Ends	Dec 9th

Crop Details

Trait	Value
Days to Maturity	45
Sun Requirements	Full Sun
Growth Habit	Rosette
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	70
Min Soil Temp (°F)	40
Min Night Temp (°F)	30
Harden Off (days)	6

Recommended Companions

Yellow Sweet Spanish Onion

Long Black Spanish Radish

Frequently Asked Questions

What’s the most common spinach (Spinacia oleracea) disease to watch for, and how do I treat it?

Fungal downy mildew is a frequent problem on spinach, especially in cool, humid weather, showing yellow patches on top with gray-purple growth underneath the leaves. Remove and discard infected plants, avoid overhead watering, and improve airflow by spacing plants properly. If you need to act quickly, use a labeled fungicide that targets downy mildew and follow the label for spinach use.

How often should I water spinach during the main growing phase (about weeks 2–6)?

Keep the soil evenly moist from seedling establishment through harvest, aiming for consistently damp (not waterlogged) beds. In most home gardens this means watering about 1 inch per week total, split into smaller sessions, and adjusting to heat—spinach needs more frequent watering during warm spells to prevent stress and early bolting. Mulch lightly to reduce surface drying and check moisture at 1–2 inches deep before watering again.

How can I tell when my spinach (Spinacia oleracea) is ready to harvest?

Harvest when leaves are tender and usable, typically about 40–50 days after sowing, and when plants have formed a good rosette of medium-sized leaves. Pick outer leaves first (leave the center growing) for a longer harvest window, or harvest whole plants if you need a single cut. If leaves become tough or bitter or you see the plant starting to bolt, harvest immediately and expect fewer tender leaves.

Tender, savoyed leaves unfurl with a velvety, crinkled texture and a deep, lively green that feels almost luminous in the garden. Regiment spinach delivers a sweet, clean flavor with a satisfying bite—ideal for steaming, sautéing, and quick stir-fries, or for blending into rich sauces and hearty soups. With about 45 days to maturity, it’s a dependable choice for cool-season harvests when you want consistent, garden-fresh greens at their peak.

Sowing Tips

Transplant Conditions

Wait until soil reaches 40°F and nights stay above 30°F before moving outdoors. Harden off for 6 days first.

Expert Note

Keep soil cool and consistently moist; thinning and even spacing help Regiment’s dense, crisp leaf development while reducing bolting risk.