Spinach Growing Info

Learning Download: How to Grow Spinach
When to Plant:
Spinach can be direct sowed as soon as the soil can be worked. Best grown in spring and fall when temperatures are cooler. Plant every 10 days for continual harvest.
Soil Temperature & Germination:
Soil temperature is an important factor when germinating spinach. Spinach will germinate at soil temperatures between 40-75°F. Spinach takes up to a month to sprout at 40° while it may only take 5 days at 75° but at higher temperatures you may only see 30% germination rates. For best results soak seeds over night in water one week before planting. Allow to dry for a couple days and then store in refrigerator in a sealed container for 5 days. This will decrease germination time and increase germination rates.
Use little fertilizer. Spinach is partial acidic soil. Spread some lime to increase pH. Use 2 lbs. of complete (5-5-5) fertilizer per 100 square feet.
Location:Planting Depth:Soil Type:
Full to Partial Sun1/4-1/2″Well drained, fertile, pH 7-7.5
 Seed SpacingRow SpacingSeeds per 100′Yield per 100′Seeds per Acre
Spinach3-6″12-18″40050 lbs.175,000


Spinach Seed Count 
1 Ounce: 2,250 Seeds
1/8 Pound: 4,500 Seeds
1/4 Pound: 9,000 Seeds
1/2 Pound: 18,000 Seeds
1 Pound: 36,000 Seeds
* These are average spinach seed counts.  Varieties can vary.
1 Acre = 43,560 square feet, or 435’x100′

Weight Conversion:
1 Pound = 16 Ounces