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Serrano peppers are a fairly hot pepper, with a Scoville rating between 10,000 to 25,000. Serrano peppers are hotter than Jalapenos, and provide great flavoring with less heat with the seeds removed. Serrano peppers are also commonly used in making salsa such as Pico De Gallo.

Growing Serrano Pepper Plants

Serrano peppers originate in Mexico, they are a common ingredient in Mexican food and used throughout the southwest United States. Mature Serrano pepper plants reach a height of between one and a half and five feet tall (450mm to 1500mm). Each plant can hold up to fifty pepper pods. Unripe Serrano peppers are green, but the color at maturity varies. Common colors are green, red, brown, orange, or yellow. Because Serrano peppers produce many peppers per plant, most gardeners will only need to plant one or two to harvest more than enough peppers. Serrano pepper plants are also vigorous, doing well in even relatively poor growing conditions.

 Lifecycle of Serrano Pepper Plants

Serrano peppers are perennial vegetables, with a low tolerance for frost. The serrano pepper originates in Mexico and grows to about 18 " with a spread of 12 ". 

 How to plant Serranos

Serrano Peppers can be sown directly after danger of frost has passed but similar to Jalapenos they benefit from being started indoors and transplanted. The soil should be well drained, slightly basic and ideally mulched. Let soil dry out in between watering and it may be necessary to provide support for a large Serrano.

What zones does Serrano grow best in?

5 - 12 pH Range The level of acidity for Serrano. 7.0 - 8.5

How much water does Serrano require?


 How much nitrogen fertilizer does Serrano need?


What soil should I grow Serrano in?


 How much sunlight does Serrano need to grow?

 Full Sun

Can Serrano seeds be sown directly?

Yes, Sowing Depth How deep to plant Serrano? 0.5 cm / 0.20"


 How far apart to sow Serrano

5.0 cm / 1.95" Sowing Row Distance Apart How far apart to sow rows of Serrano. 35.0

The lowest temp that Serrano will germinate at?

18°C / 64°F Max. Germination Temperature The highest temp that Serrano will germinate at. 32°C / 90°F

How far apart to plant Serrano seedlings?

 40.0 cm / 15.60" Planting Row Distance

How long does Serrano take to grow?

These estimates for how long Chili pepper 'Serrano' takes to sprout:

Days to germination:

9 days Average 9 days | Min 2 days | Max 25 days

Days to Transplant:

+ 47 days Average 47 days | Min 7 days | Max 78 days.

Days to Maturity:

+ 116 days Average 116 days | Min 43 days | Max 244 days

Total Growing Days: 172 days



Parent Category: Species Guides
Category: Peppers