Spargo

Spinach

Zone 9b Save Garden

🌱 45d to harvest Rosette

Tender, semi-savoy leaves of Spargo unfurl with a velvety, crinkled surface and a rich, deep-green glow that feels almost luminou…

Crop Dates

Milestone	Date
Start Indoors	Direct Sow
Last Frost	Feb 9th
Transplant / Sow Outdoors	Jan 26th
Harvest Begins	Mar 12th
Harvest Ends	Dec 9th

Crop Details

Trait	Value
Days to Maturity	45
Sun Requirements	Part Sun
Growth Habit	Rosette
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	60
Min Soil Temp (°F)	40
Min Night Temp (°F)	30
Harden Off (days)	5

Recommended Companions

White Bermuda Onion

Heshiko Bunching Onion Onion

Frequently Asked Questions

What’s the most common disease problem for Spinacia oleracea (spinach) and how do I prevent it?

Fungal leaf spot (often favored by cool, wet weather and crowded plants) can show up as dark, irregular spots with yellowing around them. Water at the soil line (not overhead), thin so leaves dry quickly after rain, and remove infected leaves promptly. If problems persist, use a label-approved copper or potassium bicarbonate spray to protect new growth.

How often should I water Spinacia oleracea during its main growing phase?

During the 30–45 day growing window, keep the top 1–2 inches of soil consistently moist but not waterlogged—spinach prefers steady moisture to avoid tough leaves and bolting. Water in the morning so foliage can dry, typically about 1 inch per week total from rainfall plus irrigation, adjusting to soil so you don’t see wilting or crusting. If your soil stays soggy or you see drooping with saturated soil, cut back and improve drainage.

How can I tell when Spinacia oleracea is ready to harvest?

Harvest when leaves are mature enough for eating—usually around 40–50 days after sowing. Look for a well-formed rosette with leaves that are sizable and firm (not tiny and stringy), and start with outer leaves if you want continued production. If you see the center beginning to stretch or flower stalks forming, harvest immediately because heat triggers rapid bolting and bitterness.

Tender, semi-savoy leaves of Spargo unfurl with a velvety, crinkled surface and a rich, deep-green glow that feels almost luminous in the garden. Expect a mild, spinach-forward flavor with a pleasantly succulent bite—ideal for fresh salads, quick sautéing, and silky sauces, or for blanching and freezing for later use. At about 45 days, Spargo delivers dependable harvests with leaves that stay attractive and flavorful as they mature.

Sowing Tips

Transplant Conditions

Wait until soil reaches 40°F and nights stay above 30°F before moving outdoors. Harden off for 5 days first.

Expert Note

For best leaf quality, keep soil evenly moist and use early spring or cool-fall plantings since even slow-bolting spinach will eventually bolt as temperatures rise.