Smooth Leaf Spinach is the most popular type of spinach on the West Coast. It is smooth and easy to clean. Under good growing conditions, Smooth Leaf Spinach can be one of the fastest growing crops.
- Ease of Growing
- Grown as
- Days to Maturity
- 40-50 (Spring/Summer), 40-50 (Fall/Winter)
- Growing Habit
Spinach is temperamental when it comes to heat and long days. Keep it evenly moist without soaking leaves.
- Spring Transplant, Spring, Fall Transplant, Fall
- Growing Season
- Short, Long
- Cultivar Type
- Growing Conditions
- Cold, Cool
More than any other common crop, spinach doesn't like warm weather. It actually germinates best at only 50 degrees F. It germinates more rapidly at higher temperatures, but at 70 degrees F only about half the seeds will germinate.
Spinach bolts when exposed to long summer days, so it is usually grown as a spring or autumn crop. It's much less prone to bolting in the shorter, cooler days and the leaves grow larger and more succulent.
Each plant doesn't produce very much, so it is usually grown in wide intensive beds. Raised beds are good because they warm up quickly in spring and tend to be well drained.
- Outdoor Growing Temp
- 45°F - 75°F
- Min Outdoor Soil Temp
Spinach germinates well at low temperatures.
- Start Indoors
- Start Outdoors
- Sun: min. 6 hours daily (Cool)
Spinach needs full sun for good growth, particularly for a fall or over-wintering crop.
Spinach doesn’t like heat and in warmer areas it should be planted in a shady site.
Keep the soil evenly moist (not wet) otherwise it may bolt. Fortunately this isn't usually a problem in the cool weather preferred by spinach.
Try to avoid splashing mud on the leaves as it can make them gritty.
Spinach needs a moderate amount of nitrogen and potassium and a fairly small amount of phosphorous.
- Tolerates light frost, Needs summer shade
- Small Gardens?
Spinach can work well in containers, though they need to be sufficiently large (ideally a two gallon pot for each plant). In larger containers allow 12" between the plants for best growth.
In warmer areas you should use light colored pots to reduce heat absorption.
- Attracts beneficial insects?
- Bright green
- Fruit Size
- Plant Height
- Plant Diameter
- Hardiness Zone
- Disease Resistance
- Taste Profile