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Serrano Chili Pepper seeds.

Serrano Chili Pepper seeds.

Regular price $1.75 USD
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Serrano Chili Pepper Seeds - 25 SEEDS NON-GMO.

How to Grow Serrano Chili Peppers

Serrano chili peppers are a popular type of chili pepper that is known for its medium-hot heat and bright green color. Serrano peppers are relatively easy to grow and can be grown indoors or outdoors.

Starting Seeds

Serrano pepper seeds can be started indoors 6-8 weeks before the last frost date in your area. To start seeds indoors, fill a seed starting tray with well-draining potting mix and moisten it thoroughly. Sow the seeds 1/4 inch deep and space them about 1 inch apart. Cover the tray with plastic wrap to create a warm, humid environment.

Place the seed starting tray in a warm location, such as a sunny windowsill or near a heat mat. Keep the soil moist but not soggy. The seeds should germinate within 14-21 days. Once the seedlings have two sets of true leaves, they can be transplanted into individual pots.


When the seedlings are about 6 inches tall and have hardened off, they can be transplanted into the garden or into larger pots. If you are transplanting outdoors, choose a sunny location with well-drained soil. Space the plants 12-18 inches apart.


Serrano pepper plants need full sun and well-draining soil. They also need regular watering and fertilizing. Water the plants deeply once a week, or more often if the weather is hot and dry. Fertilize the plants every two weeks with a balanced fertilizer.


Serrano peppers are typically ripe 60-90 days after transplanting. The peppers will be bright green and firm when ripe. Be sure to wear gloves when harvesting serrano peppers, as the capsaicin oil can irritate your skin.


  • Serrano pepper plants are susceptible to pests and diseases, so it is important to inspect them regularly.
  • If you are growing serrano peppers outdoors in a cooler climate, you may need to bring them indoors during the winter months.
  • Serrano peppers are very hot, so use them sparingly. A little goes a long way!

Enjoy your homegrown serrano chili peppers!

Here are some additional tips for growing serrano chili peppers:

  • Serrano peppers prefer slightly acidic soil with a pH of 6.5-7.0. If your soil is too alkaline, you can add a bit of compost or peat moss to lower the pH.
  • Serrano pepper plants are heavy feeders, so it is important to fertilize them regularly. Use a balanced fertilizer that is high in phosphorus and potassium.
  • Serrano pepper plants need good drainage, so be sure to plant them in a raised bed or in a pot with drainage holes.
  • Serrano pepper plants are relatively drought-tolerant, but they will produce the best fruit if they are watered regularly.
  • Serrano pepper plants are susceptible to a number of pests and diseases, including aphids, spider mites, and whiteflies. Inspect your plants regularly and treat any pests or diseases immediately.


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