How to Grow Jalapeno Peppers: Spice Up Your Garden

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If you’re a fan of spicy flavors and enjoy adding a kick to your favorite dishes, then grow jalapeno peppers. They’re known for their moderate heat level and versatility in various cuisines, making them a popular choice among home gardeners.

In this comprehensive guide, we will walk you through the process of how to grow jalapeno peppers from seed to harvest, providing you with expert advice and practical tips along the way.

Basic Info

Common NameJalapeno Pepper
Scientific NameCapsicum annuum
Days to Harvest70-85 days
LightFull sun
SoilWell-drained, fertile soil
WaterRegular watering, keep soil evenly moist
FertilizerBalanced fertilizer with equal NPK ratio
PestsAphids, Flea beetles, Pepper weevils
DiseasesBacterial spot, Phytophthora blight

Best Varieties: How To Grow Jalapeno Peppers

If you want to grow jalapeno peppers, there are several different varieties to choose from, each with its unique characteristics and flavor profiles. Some popular jalapeno pepper varieties include:

  • Early Jalapeno: This variety is known for its early maturity, making it a great option for gardeners in colder climates or those who want to enjoy jalapeno peppers earlier in the season. It has a milder heat level, making it suitable for those who prefer a less spicy flavor.
  • Jalapeno M: This variety is a medium-heat jalapeno pepper that has a thicker flesh and is ideal for stuffing or grilling. It has a slightly sweeter flavor compared to other jalapeno varieties, which makes it a favorite among many home cooks.
  • Jalapeno Fooled You: This variety looks very similar to the traditional jalapeno pepper but has little to no heat, making it perfect for those who enjoy the flavor of jalapenos without the spiciness.

Choosing the Right Variety

When selecting a jalapeno pepper variety to grow, consider your personal preference for heat level, intended use (e.g., fresh consumption, stuffing, pickling), and growing conditions in your area. If you live in a region with a shorter growing season, you may want to choose an early-maturing variety to ensure a successful harvest.

On the other hand, if you prefer a milder heat level, you may opt for a variety with lower heat levels. Researching and selecting the right jalapeno pepper variety for your specific needs and growing conditions is an essential first step to successfully grow jalapeno peppers.

How to Grow Jalapeno Peppers From Seed


Jalapeno peppers can be grown from seeds, and starting them indoors or outdoors is a viable option depending on your climate and growing season.


Starting jalapeno pepper seeds indoors allows you to control the growing conditions and gives the plants a head start before transplanting them outdoors. Here’s how you can start jalapeno pepper seeds indoors:

  1. Gather your supplies: You will need jalapeno pepper seeds, seed trays or pots, seed starting mix, and a source of light, such as a seedling grow light.
  2. Plant the seeds: Fill the seed trays or pots with seed starting mix, and sow the seeds about 1/4 inch deep. Water the soil lightly and cover the trays with a humidity dome to create a greenhouse-like environment.
  3. Provide light and warmth: Place the trays on a heat mat under your seedling grow lights or in a sunny spot with temperatures around 70-80°F (21-27°C). Keep the soil consistently moist but not waterlogged.
  4. Transplant seedlings: Once the seedlings have developed their first true leaves and are large enough to handle, transplant them into individual pots. Continue to provide adequate light and water as the seedlings grow.


If you live in a region with a long growing season and mild temperatures, you can sow jalapeno pepper seeds directly into the ground outdoors. Here’s how you can start jalapeno pepper seeds outdoors:

  1. Prepare the soil: Choose a sunny location with well-draining soil. Amend the soil with organic matter, such as compost or well-rotted manure, to improve fertility and drainage.
  1. Plant the seeds: Sow the jalapeno pepper seeds about 1/4 inch deep directly into the prepared soil, spacing them about 18-24 inches apart. Water the seeds thoroughly after planting.
  2. Provide care: Keep the soil consistently moist but not waterlogged, and protect the seedlings from extreme weather conditions, such as frost or heavy winds. Thin the seedlings to the strongest plant per spacing once they have developed their first true leaves.

When to Plant Jalapeno Peppers


The timing of when to plant jalapeno peppers depends on your growing zone and the specific weather conditions in your area. Jalapeno peppers are warm-season plants that require a long growing season with warm temperatures to thrive. Here are some general guidelines on when to plant jalapeno peppers:

  • Indoors: Start jalapeno pepper seeds indoors about 8-10 weeks before the last expected frost date in your area. This will give the seedlings enough time to establish and be ready for transplanting outdoors once you’re well past your last frost date.
  • Outdoors: If you’re planting jalapeno pepper seeds directly outdoors, wait until all danger of frost has passed and the soil has warmed up to at least 60°F (15.5°C) before planting. In most regions, this will be in late spring or early summer.

It’s always a good idea to check the local climate and weather conditions in your area to determine the optimal time for planting jalapeno peppers.

Care and Maintenance

Taking care of jalapeno peppers involves providing them with the right growing conditions and regular maintenance to promote healthy growth and abundant yields.

When I first started growing jalapeno peppers, I made the mistake of planting them too close together. As they grew, they started competing for nutrients and sunlight, resulting in stunted growth and lower yields. I learned the importance of spacing out jalapeno plants properly to allow them to thrive and produce abundant harvests.

Here are some other key aspects of care and maintenance for jalapeno peppers:

Select the Right Location When You Grow Jalapeno Peppers

Choose a sunny location for your jalapeno pepper plants, as they need at least 6-8 hours of direct sunlight per day to thrive. Make sure the location has well-draining soil to prevent waterlogging, as jalapeno peppers prefer slightly moist but not soggy soil.

Ideal Soil

Jalapeno peppers prefer fertile, well-draining soil with a slightly acidic to neutral pH (around 5.5 to 6.5). Amend the soil with organic matter, such as compost or well-rotted manure, to improve fertility and drainage. Avoid heavy clay soils, as they can retain excess moisture and cause root rot.

Watering Needs to Grow Jalapeno Peppers

Jalapeno peppers require regular watering, especially during hot and dry periods. Keep the soil consistently moist but not waterlogged, as overwatering can lead to root rot. Water deeply and thoroughly, allowing the water to reach the root zone, and avoid overhead watering to prevent the spread of diseases. Mulching the soil around the plants can help retain moisture and regulate soil temperature.

Type of Fertilizer

Jalapeno peppers are heavy feeders and require regular fertilization to support their growth and fruiting.

In a study conducted by a group of horticulturists at a local university, they experimented with different methods of fertilization for jalapeno peppers.

The study found that using a balanced organic fertilizer during the initial stages of growth, and then switching to a potassium-rich fertilizer during flowering and fruiting stages, resulted in larger and more flavorful jalapeno peppers.



Jalapeno peppers can be harvested when they reach their mature size and color, usually about 60-75 days after transplanting. The mature size and color may vary depending on the specific jalapeno pepper variety you’re growing. Jalapeno peppers are usually harvested when they are green and firm, but you can also allow them to ripen to red or yellow if you prefer a sweeter flavor with less heat

Common Problems: Grow Jalapeno Peppers

Like any plant, jalapeno peppers can face certain pests and diseases that can affect their growth and yield. It’s important to be vigilant and take preventive measures to keep your jalapeno pepper plants healthy. Here are some common problems you may encounter when growing jalapeno peppers and how to deal with them:


AphidsStunted growth, curling leaves, sticky residueRemove by hand, use insecticidal soap or neem oil
Flea beetlesSmall holes in leaves, skeletonized foliageUse row covers, apply insecticidal soap or neem oil
Pepper weevilsHoles in fruit, wilting plantsRemove infested fruit, use insecticidal soap or neem oil
ThripsSilvery speckles on leaves, distorted growthUse insecticidal soap or neem oil, improve air circulation
WhitefliesWhite, winged insects on underside of leaves, sticky residueUse yellow sticky traps, apply insecticidal soap or neem oil


Bacterial spotWater-soaked spots on leaves, dark lesions on fruitRemove infected leaves, avoid overhead watering, apply copper-based fungicides
Phytophthora blightDark water-soaked spots on stems and leaves, wilting plantsImprove drainage, avoid overhead watering, apply fungicides with phosphorous acid

Note: Early detection and prevention are key to managing pests and diseases. It’s important to practice good sanitation, provide proper air circulation, and avoid over-watering to minimize risk. Always follow label instructions when using any pesticides or fungicides.

Tips on Maximizing Yield

To maximize the yield or growth of your jalapeno pepper plants, here are some additional tips that you can follow:

  1. Pinch off the tips: Pinch off the tips of the plants when they are about 6-8 inches tall. This will encourage bushier growth and more branching, resulting in more flowers and fruits.
  2. Mulch the soil: Mulch the soil around your jalapeno pepper plants with straw, leaves, or other organic materials. Mulching helps retain moisture, regulate soil temperature, and suppress weeds, which can ultimately promote better growth and yield.
  3. Provide support: If you’re growing larger jalapeno pepper varieties or expecting a heavy yield, provide support to the plants with stakes or cages to prevent them from bending or breaking under the weight of the fruits.
  4. Prune judiciously: While jalapeno pepper plants generally do not require extensive pruning, you can selectively prune off any yellowing, diseased, or damaged leaves and branches to improve air circulation, reduce the risk of diseases, and promote overall plant health.
  5. Be mindful of temperature: Jalapeno peppers thrive in warm temperatures between 70-90°F (21-32°C). Avoid planting them in areas with extreme temperature fluctuations or cold drafts, as it can affect their growth and yield.


Growing jalapeno peppers can be a rewarding and enjoyable experience for any home gardener. By choosing the right variety, starting seeds properly, providing the right care and maintenance, and taking preventive measures against pests and diseases, you can successfully grow jalapeno peppers and enjoy a bountiful harvest of spicy and flavorful fruits. Remember to follow the tips and advice shared in this article, and don’t be afraid to experiment and learn from your own experiences in the garden. Share your own gardening tips and experiences with growing jalapeno peppers in the comment section below, and happy gardening!

FAQ: Grow Jalapeno Peppers

Is it better to grow jalapeno peppers in pots or in the ground?

Jalapeño peppers can be grown successfully in both pots and in the ground, depending on the available space, growing conditions, and personal preference. However, jalapeños generally perform better in the ground, as they have more space for root development and access to natural nutrients. Pots can be used for container gardening, but careful attention to watering, fertilization, and proper pot size is necessary for optimal growth.

Do jalapeños get hotter the longer they grow?

No, jalapeños do not get hotter the longer they grow. The heat level of jalapeños is determined by the specific variety and genetics, not the length of time they are allowed to mature on the plant.

Should you pick jalapeños when they are green or red?

Jalapeños can be picked and consumed when they are green or red, depending on your preferred level of spiciness. Green jalapeños are milder, while red jalapeños are typically hotter and sweeter. Choose the color that suits your taste preferences.

Why aren’t my homegrown jalapeños hot?

There are several reasons why homegrown jalapeños may not be as hot as expected. Factors such as growing conditions, weather, and the specific variety of jalapeño can all influence the heat level. Additionally, jalapeños can vary in heat even within the same plant or fruit.

Why is my jalapeño plant flowering but not producing?

Jalapeño plants may flower but not produce fruit due to various factors, such as temperature fluctuations, insufficient pollination, or nutrient deficiencies. High temperature is the leading cause, high temperatures render the pollen sterile making it impossible for the flower to pollinate.

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