Teton

Spinach

40d to harvest

Sink your spoon into Teton’s richly savoyed leaves—crisp, deeply quilted, and vividly green with a tender, sweet finish. At about 40 days, this market-class spinach forms an upright, leafy mound that stays flavorful and pleasantly crisp, even as the leaves mature. Grow Teton for fresh salads and quick sauté-style meals, or for silky green sauces and nutrient-packed additions that shine when steamed or blanched.

Crop Dates

Milestone	Date
Start Indoors	Apr 14th
Last Frost	May 19th
Transplant / Sow Outdoors	May 19th
Harvest Begins	Jun 28th
Harvest Ends	Sep 21st

Crop Details

Trait	Value
Days to Maturity	40
Sun Requirements	Part Sun
Growth Habit	Rosette
Support Needed	None
Planting Depth	Normal
Germination Temp (°F)	55
Min Soil Temp (°F)	40
Min Night Temp (°F)	32
Harden Off (days)	6

Frequently Asked Questions

What pest or disease is most likely on spinach (Spinacia oleracea), and how can I control it?

Watch for downy mildew (often shows as yellow patches on top with gray-purple growth on the underside), especially in cool, humid weather. Remove infected leaves immediately, improve airflow with wider spacing, and avoid overhead watering. If you repeatedly see it, use a labeled fungicide for downy mildew on leafy greens and keep the bed evenly moist but not waterlogged.

How often should I water spinach during its main growth phase (about the first 3–5 weeks)?

Keep the soil consistently evenly moist from germination through the first full leaf harvest window, aiming for damp soil 1–2 inches down. In typical home beds, this often means watering 1–2 times per week, but more frequently in warm spells (part sun can still dry quickly). Don’t let soil swing from dry to soggy—spinach growth slows and bitterness increases if it repeatedly dries out.

How do I tell when Spinacia oleracea ‘Teton’ is ready to harvest?

Harvest at about 40 days when leaves are about 4–6 inches long with a tender, not tough texture. For cut-and-come-again, snip outer leaves at the base, leaving the center to regrow; avoid waiting until plants bolt or leaves become coarse. If you see flower stalks starting, harvest immediately and consider replacing the crop since quality declines fast.