How to Grow Jalapeños Indoors

Looking to spice up your life? Maybe just your plate? If you’re thinking about growing jalapeño peppers and curious to learn more, you’ve come to the right place. Jalapeños pack a lot of heat and a lot of flavor, making them the perfect versatile pepper to grow in your garden. You can look forward to endless opportunities for sides, salsas, and an extra pop of spice in any dish you can cook up.

But what about growing jalapeños in an indoor garden? We’ll guide you on how to grow jalapeños indoors in some simple steps, starting here.

You can have fresh jalapeños, herbs and veggies right in your home. Harvest high-quality and sustainable produce with Gardyn’s new Home Kit 4.0.


10 - 28 DAYS


60 - 80 DAYS


8 - 20 WEEKS

Table of Contents

Care & Harvest

🌡️ Temperature

Prefers warmer temperatures (70-85F).

🐝 Pollination

Peppers require pollination. Flowers develop 4-6 weeks after sprouting. Remove the first set of flower buds that grow to encourage root and foliage development. When the next flowers appear, hand-pollinate them by gently shaking the entire plant to replicate the effects of wind, or gently disturb the inside of blossoms with your finger or a small brush.

⭕ Support

We suggest using our Plant Belt to support the plant and its heavy fruit as it matures.

✂️ Pruning

These peppers require pruning. Snip away yellow or brown leaves if they appear, and trim branches to ensure the plant stays within the Gardyn’s light. Check the roots monthly and trim any that are brown or extending past the yPod. 

🔎 Plant Health

Gardyn peppers are prolific producers, even if they show signs of Edema, a harmless disorder. Aphids are a common pest, but you can use our prevention and treatment tricks to keep pests at bay!

🥬 Harvest

Jalapeños can be harvested when they are firm, they will be about 3 inches long. When leaving them on the plant longer, they will continue to ripen and change color. Harvest by cutting off the plant. 

Choose from 100+ tasty varieties

Pink Celery
Stock Flower
Perpetual Spinach
Collard Greens
Blush Hibiscus
Cherry Tomato
Mini Cauliflower
Banana Peppers
Scarlet Snapdragon
Bi-Color Sunflower
Bok Choy
Bronze Arrow
Bull’s Blood
Bunching Onions
Burrito Pepper
Canna Flower
Dragon Beans
Fairytale Eggplant
Fiesta Gitana
Flashy Trout Back
Fuchsia Snapdragon
Garlic Chives
Goliath Pepper
Green Beans
Green Mustard
Green Salanova
Green Tatsoi
Holy Basil
Hon Tsai Tai
Hungarian Hot Wax Pepper
Italian Parsley
Kale Lacinato
Lemon Balm
Lemon Hot Pepper
Lime Basil
Lollo Rossa
Mini Eggplant
Mini Pumpkin
Mini Squash
Mini Strawberries
Monte Carlo
Pink Petunia
Poblano Pepper
Purple Basil
Purple Beans
Purple Bok Choy
Purple Campanula
Purple Kohlrabi
Radio Calendula
Red Amaranth
Red Hibiscus
Red Marietta Marigold
Red Mustard
Red Oak Leaf Lettuce
Red Sails
Red Salad Bowl
Red Sorrel
Red Swiss Chard
Red Tatsoi
Rouge d’Hiver
Snap Peas
Sweet Marjoram
Sweet Peppers
Sweet Thai Basil
Thai Eggplant
Tokyo Bekana
Wasabi Greens
White Petunia
Yellow Beans
Yellow Cherry Tomato

Why grow jalapeños inside?

Jalapenos are a relatively mild, yet punchy pepper. As popular perennial plants, they can grow and produce fruits for five years. But you may be asking: Why grow jalapeños inside when you can just as easily pick them up from a grocery store or a farmer’s market? Planting and growing your own jalapeños indoors gives endless benefits ⎯ we’ll tell you just a few.

Fiery and Fresh

By harvesting jalapeños peppers in your own home, you know they’re as fresh as possible and at the perfect stage of ripeness. Maximum nutrition and flavor!

Every Season is Jalapeño Season

An indoor gardening set-up means no waiting for on-season peppers and produce. You can grow jalapeños inside and eat them year-round.

A Pepper for the Planet

By using an indoor gardening system, you use less water than traditional gardening. You also cut back on endless plastic packaging and trips to the grocery store.

Healthy Heat

Your jalapeños are coming straight from the source ⎯ no chemicals, pesticides, or GMOs. Just some heat, plenty of flavor, and lots of vitamins and antioxidants.

Save on Spice

The more peppers you grow at home, the more money you save. Spend less on lower-quality produce from the store, and only grow what you need.

You can go even bigger with more plants and more savings. Gardyn’s AI-assisted and fully automated indoor gardening system will do most of the work for you. Investing now will pay off in the long-run with years of fresh, sustainable, home-grown produce. Save more, eat more, worry less!

Grow Microgreens, Too

Bite sized superfood packed with nutrients and loaded with flavor. Go from seed to harvest in just one week.

What do you need to grow jalapeños inside?

Lucky for us, these pepper plants are simple to grow inside and toss into any dish. To grow jalapeños inside, here’s what you’ll need:


Just like most hot peppers (like habaneros), jalapenos flourish under mid-summer conditions ⎯ the hottest months of the year. Naturally, pepper plants prefer a warmer (hot) temperature when grown indoors in a space with direct sunlight. Good temperatures for indoor jalapeño plants is 70-85 degrees Fahrenheit. You can maintain this temperature with a heating pad or other tools, as well as moving the plant away from air vents during the summer. These measures will ensure optimal plant growth.


Peppers are flowering plants, meaning they need pollination. You’ll see flowers about 4-6 weeks after sprouting. Remove that first set so that the root and foliage continue to grow. Once the next set of flowers pop up, you can gently shake the entire plant to simulate wind and hand-pollinate them. Alternatively, you can gently touch the inside of the flowers with your finger or a small brush.


Jalapeno peppers are quite a heavy fruit. As they grow, they need to have enough support to mature. A great option is the adjustable Gardyn Plant Belt. This easy-to-wash accessory is designed specifically for Gardyn’s system, and can support heavier plants to produce better harvests.


To grow jalapeños inside, one of the first things you’ll need is the container. You can choose practically any container to start your pepper plant. The larger the container, the quicker they will germinate and the more peppers you can grow.

Useful tip: A sustainable option is to reuse plastic containers or pots you have lying around. You can convert it into a planter by poking some drainage holes in the bottom to avoid waterlogging and the risk of root rot.


After your jalapeno plant has fully sprouted, it’s time to keep it healthy. Your jalapeños might show signs of Edema, a harmless disorder that looks like yellowish bumps or blisters on the leaves. The most common pests like insects like ladybugs and aphids, which can be combatted with Gardyn’s pest prevention tips.

How to plant jalapeños inside

You can start your jalapeños as seeds or seedlings. For a more cost-effective route, you can start straight from the seed:

  • Plant your jalapeno seeds in any container with seed-starting soil;
  • Keep the soil moist and warm;
  • Once the seedlings sprout with 2-3 sets of leaves, replant them;
  • Gently move your plants into a 1-gallon pot;
  • Use good potting mix soil and place it in a location with full sun.

There’s another way to grow jalapeños inside and watch them flourish, that’s even more cost-effective and sustainable. The Gardyn Home Kits come equipped with yCubes, and you’ll receive a starter pack of 30 different plants. These yCubes contain seeds that are locally-sourced, chemical-free, and are ready to sprout into your beautiful indoor garden. It couldn’t be easier ⎯ pop a yCube into your indoor Gardyn system and the Home Kit will take care of the rest.

Learn more about the Gardyn Home Kit Models and how the system works.

How to care for your jalapeno plants

After about 10-28 days, your jalapeño seedlings should be sprouted! Now it’s time to properly care for the produce and make sure it can grow to its full potential. Peppers are a pretty hardy plant, so it only takes a few steps to look after them:

STEP 1: Watering

When growing jalapeños inside, it’s best to use damp soil. It’s advised to water once every 1-2 days, depending on outside factors like heat and humidity. To know if your jalapeño plant needs water, you can check the top inch of the soil. If the top inch is dry, it needs to be watered. If the water is leaking out of the pot’s drainage holes, you’ve watered enough.

STEP 2: Fertilizing

Your jalapeños don’t need fertilizer, but it can’t hurt! In the warmer months, you can fertilize them every 3-4 weeks by dissolving fertilizer in water. This will help your pepper plants stay healthy and continue to flourish.

STEP 3: Pruning

To prune your peppers, snip away any yellow or brown leaves. Trim any branches that stray outside your light system. The roots should be checked regularly, ideally once a month, and should be trimmed if they’re extending past the container.

STEP 4: A Simpler Solution

We’re happy to help you with the steps to grow jalapeños inside, whether you’re starting from seed or with a seedling. However, the easiest and most efficient way to grow jalapeños is with the Gardyn Home Kit system. Watering, lighting, nutrition…you name it. The Gardyn indoor organic gardening system uses advanced technology to care for your plants. All you have to do is choose your plants and set up the system ⎯ it’ll take care of the rest! You can get started with a Gardyn membership or gift card.

Harvesting and using your homegrown jalapeños

Jalapeño peppers can be harvested once they feel firm and turn a dark green color. You can also wait until they turn a bit reddish, which will give it more of a sweet and milder flavor. After you grow your jalapeños inside, they couldn’t be easier to harvest! They typically take about 60-80 days to mature, after which you can simply snip them off the plant.

Jalapeño peppers can add a little spice and seasoning to any dish. You can use your peppers for drinks, sides, pickling, or as an appetizer all on its own (jalapeño poppers, anyone?).

For a unique and crowd-pleasing recipe, try a sweet jalapeño hummus. You just need jalapeños, garbanzo beans, tahini, and whatever spices and seasonings you’d like to add. Use some honey and lemon juice for added sweetness and acidity, then blend all together. Serve with your favorite chips and you have a delicious side dish!

Choose the best indoor garden solution on the market

Unveil the future of indoor gardening with Gardyn’s Home Kit! Superior to competitors, our kit offers effortless gardening through innovative yCube technology, automating the growing process for busy individuals. With the ability to cultivate a diverse array of plants, Gardyn ensures an efficient, user-friendly experience, backed by robust customer support and a competitive warranty. Choose Gardyn, where technology meets convenience in creating lush, indoor green spaces.

Growing Jalapeno peppers inside – can you handle the heat?

Whether you do it on your own or with a tech-savvy indoor gardening system, the answer is yes. Now that you know how to grow jalapeños inside, you can reap big rewards from a few simple steps:

  • Plant in a large container;
  • Water every 2-3 days;
  • Place in warm environment or near a sunny window;
  • Use tools to support the plant’s weight;
  • Harvest!

Grow jalapeños and other pepper varieties indoors with Gardyn. Setting up your indoor gardening system is hassle-free, and allows you to have local and fresh produce right in your own home. What other benefits does the Gardyn Home Kit give you?

  • Humidity and temperature sensors;
  • Plug-N-Play design for easy assembly and cleaning;
  • AI-powered plant support and Vacation Mode;
  • 30-plant starter set;
  • Adapted lighting and watering systems.

Gardyn’s tech-savvy and modern design makes a great addition to any home. Learn more about how the system works and compare the indoor gardening kits here. Gardeners are in on the secret. And why not you? Make your life simpler, and make your recipes fresher. Welcome to Gardyn!

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