Growing Guide: How Long do Jalapeno Seeds Take to Germinate?

Thinking you may want grow some hot peppers? It may have you wondering, how long do jalapeno seeds take to germinate? Let’s turn up the heat and grow some jalapeno peppers, shall we?

How Long do Jalapeno Seeds Take to Germinate?

Jalapeno pepper seeds are notorious for being a little stubborn when it comes to germination. It is not uncommon for jalapeno seeds to take anywhere from 7-21 days to germinate.

How Long do Jalapeno Seeds Take to Germinate? Does Variety Matter?

Different varieties will have different germination times. Researching the variety may help you determine how long jalapeno seeds take to germinate.

Jalapeño Plant Basics

Jalapeno peppers are relatively easy to grow. With a few considerations in mind, you’ll be able to grow an abundant crop of jalapeno peppers.

How to Grow a Jalapeño Plant From Seed

Growing a jalapeno plant, or any hot peppers, from seed takes time, unlike growing lettuce, which is much faster. Be sure to start your seeds at least 8-10 weeks before your average last frost in the spring.

Choosing Your Jalapeño Seeds

With all the different choices of seed companies, and not to mention the varieties to choose from, buying seeds can be overwhelming. My best tip for seed buying is to find a company who is growing and harvesting seeds in your region. You are then guaranteed to get seeds that have done well in your climate.

How to Choose the Right Jalapeno Varieties

Jalapeno peppers are a category of pepper, as there are many different varieties. They all have different levels of heat, different flavors, and other characteristics, such as early varieties, that you may want to consider.

Hybrid Seeds or Heirloom Seeds

You have two choices to consider. Hybrid seeds, which are created for disease resistance and production, or heirloom seeds, which are open pollinated varieties that you can save seed from.

Decide which is most important to you or try varieties from both categories to see what you prefer. This info can be found on the seed packets.

Size, Heat, & Color

Do you want a really large jalapeno pepper, like the Goliath Jalapeno Pepper or just really hot peppers that are high on the scoville heat units, like the Jalafuego Jalapeno?

You can also choose from fun colorful varieties like the Jaloro, which starts off gold and ripens red. You can even grow purple jalapeno peppers. As you can see, there are so many choices.

Jalapeno Seeds and Seed-Starting Mix

There are several high-quality seed-starting mixes on the market to choose from. My favorite is Fox Farm Light Warrior Seed Starter. It’s not your average seed-starting mix, as it contains earth worm castings to feed those little seedlings. Most seed starting mixes do not have any nutrients for seedlings.

You can also make your own seed-starting mix by combining equal parts peat moss, vermiculite, and perlite. The seed-starting mix should be moist but not soaking when you are ready to sow jalapeno seeds.

Sowing the Jalapeno Seeds

You’ll want to sow seeds well before the last frost date in spring, ideally, 8-10 weeks before. Sow your jalapeno seeds in moist seed starting mix about 1/4 inch deep. Starting seeds indoors under grow lights will give you a head start on the season.

What Are the Ideal Germination Conditions?

Jalapeno seed germination can be tricky and germination time can vary. They require warm soil to germinate. The ideal temperature range is between 65-80*F. I recommend using a seedling heat mat or heating pad to germinate pepper seeds. A humidity dome is helpful as well.

Wrapping up your seed trays and your heat mat together in a towel helps keep everything nice and warm. Be sure to keep the soil moist and warm for good germination.

Jalapenos seeds do not require light for germination but you may hear some people recommend placing them under a grow light for better germination. Once your seeds have germinated, a south facing window or a grow light is necessary.

How to Water Jalapenos Seedlings

Keep your young seedlings moist but well drained. It’s a good idea to check for dampness and soil moisture before watering. Bottom watering works well for seedlings. Using seed trays under your pots helps provide consistent watering.

Just be sure that your jalapeno plants are in well draining soil, that is let to dry out in between watering. Over watering is the main reason for pepper plant leaves tuning yellow.

Feeding Your Jalapeno Seedlings

For best results, use a seed starting mix that already has nutrients, like the Fox Farm Light Warrior Seed Starter. You will not need to feed your young hot pepper seedlings any additional nutrients when going with a mix that has nutrients added to it.

If your seed starting mix has no nutrients added, a simple fish emulsion fertilizer added to your bottom water trays is sufficient. Young Jalapeno plants do not need to ton of nutrients. Be careful not to over feed them.

Jalapeño Plant Stages

Seedling
Growth Stage (4-8 Weeks)
Maturation Stage (2-4 Months)
Flowering Stage (4-5 Months)
Fruiting Stage

Potting Up Your Jalapeno Seedlings to a Larger Pot

Within 2-3 weeks, your jalapeno seedling will need to be potted up from the small pots to a larger pot. Once they have their first set of true leaves they are ready to pot up into a slightly bigger container with a high quality potting mix.

I prefer to use Fox Farm Ocean Forest Potting Soil or Strawberry Fields Potting Soil. Typically, I will pot up one more time before I harden them off to be transplanted into the garden.

Hardening Off the Seedlings

A week or two before your last frost date, you can start hardening off your jalapeno plants. On a day where it’s warm and sunny, start putting your jalapeño plants outside in full sun for a couple hours at a time to start.

Everyday, gradually increase the time they are exposed to outdoor weather conditions. Just be sure not to leave them out if there’s a frost.

When & Where to Plant Jalapeno Peppers

Once the chance of frost has passed and your jalapeno plants have been hardened off they are ready to be transplanted into the garden. You’ll want to choose a full sun location in your garden to plant your hot peppers.

Transplanting Jalapeno Seedlings

Get those garden beds cleaned out and ready to plant. With the no-dig method of gardening, garden beds will be amended with 2-3 inches of finished compost made from organic matter.

Water your compost in well and dig your holes for your jalapeno plants. Remove your seedlings from the tray and plant them level with the ground. Water them in well.

Growing Jalapeno Plants in a Bucket

Growing jalapeño plants in a bucket is easy. Just be sure to use a high quality potting soil and be sure to add some drainage holes to your bucket.

Proper Care and Maintenance of Jalapeño Plants

Once your healthy plants are transplanted into the home garden they need little care and love hot summers. Keep your jalapeno pepper plants watered and be on the lookout for common pests and diseases.

Watering Your Jalapeno Plants

While jalapeno plants do need plenty of water, they do not need to be watered everyday once they are established in your garden. Watering hot peppers too much will actually water down the capsaicin in the peppers. Capsaicin is what gives your peppers heat.

Be sure to water either early in the morning or late in the day. Water on the leaves can act as a magnifying glass and burn the leaves of your pepper plants. Always check for soil moisture before watering your pepper plants.

Problems Growing Jalapeño Peppers

While peppers are relatively easy to grow, there are a few common issues and fungal diseases you should be on the lookout for. Things like bacterial leaf spot, mosaic virus, blight, dampening off of young seedlings, verticillium wilt, blossom end rot, yellowing leaves, and leaf curling to name a few.

Be sure your jalapeno pepper plants have good airflow and well-draining soil to help keep fungal diseases at bay.

There are also a few common pests that you may find on your pepper plants. Pests like aphids, spider mites, and thrips are common. There are several organic pest control measures you can use.

Feeding Your Jalapeno Peppers

When the first flowers appear on your pepper plants, it’s time to fertilize. Use a fertilizer that is high in potassium, like 10-10-10. You could also spread fish fertilizer around the base of the plant, if you want to go with organic fertilizer. Pepper plants do not need much fertilizer and really only need to be fertilized this one time.

Jalapeno Peppers & Sun Requirements

Jalapeno pepper plants, and all hot peppers, love the sun. For healthy plants, put them in a location that gets at least 4-6 hours of direct sunlight.

Pruning Your Jalapeno Plants

Pruning your pepper plants will help encourage growth and increase the pepper production in the long run. It will also grow a much more sturdy plant that will be less likely to need support or staking.

When & How to Harvest Your Jalapeños

Jalapenos are usually ready to pick when they are 3-5 inches long. You can also tell they are ripe from their color. As they ripen they will go from a brighter green, to a deeper green, to red. You can harvest at the dark green stage or when they are red.

When hot peppers are ripe, they should pop off the plant easily. Leaving your peppers on the plant until you see corking, which you can see in the picture below, is even better.

How to Use Jalapeno Peppers

Jalapenos can be used many different ways. From salsa, jalapeno poppers, and cowboy candy, jalapenos and other hot peppers have multiple uses. If you have an abundance and need to extend their shelf life you can dehydrate them, make jalapeno powder, and even jalapeno salt.

FAQs

How Long Does It Take for Jalapeño Seeds to Germinate?

Depending on the variety and germination conditions, jalapeno seeds can take anywhere from 7-21 days to germinate.

Do Some Peppers Take Longer to Germinate?

Absolutely. Some of the hottest Chinese varieties can take 4-6 weeks to germinate.

When Should I Start Seeds Indoors?

Start hot pepper seeds indoors. Aim to start them 8-10 weeks before the last frost in spring.

Can I Grow Jalapeño Plants in Containers?

Absolutely. Jalapeno plants will thrive in a container garden. Just be sure to use high quality soil and make sure your containers are large pots and in full sun.

Do Jalapeños Grow Back Every Year?

Depending on your climate, pepper plants can be overwintered and grown as a perennial. In cold climates they are often grown as an annual.

How Do You Overwinter a Jalapeño Plant?

Successfully overwintering pepper plants will give you a head start next year for the pepper growing season. It does take a little time and effort but may be worth it in the long run.

Do Jalapeños Get Hotter if You Leave Them on the Plant Longer?

Yes, leaving jalapenos on the plant until they are fully ripe will produce the most heat.

How Can I Increase the Heat Level of My Jalapeño Peppers?

Jalapenos that are left on the plant until they are fully ripe and corking are going to be the hottest. Also, be sure to not water your jalapenos too much. Overwatering is not good for the plant and actually waters down the capsaicin levels in the hot peppers.

Can I Save Seeds From My Jalapeño Plants for Future Planting?

If you want to save seeds from your jalapenos be sure that you have an heirloom, or open pollenated variety.

So, How Long do Jalapeno Seeds Take to Germinate?

To sum up how long do jalapeno seeds take to germinate, it all depends on having ideal germination conditions, quality seeds, and which variety of jalapenos you are thinking of growing. With a little forethought, planning, and our Ultimate Seed Starting Guide, you’ll be germinating, growing, and harvesting jalapenos like a pro.