5 Secrets to Growing Better Peppers from Seed (2024)

Peppers are fun to start from seed and are a welcome distraction to the bitter February cold. But pepper seedlings can be tricky to grow well. You might frequently find yourself asking, “why are my peppers not growing?” and be tempted to throw the whole tray into the compost.

I’ve been growing peppers indoors for quite a few years, and have finally figured out the best ways to avoid the biggest pepper growing problem and get the results everyone wants–good side growth and strong, thick stalks.

Grab your jiffy pots and seed starting equipment and let’s get you growing your best peppers yet!

This was the first pepper from seed that I grew really well. It took me years to get it right, so yes, I am insanely proud of it.

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THE BASICS OF STARTING PEPPERS FROM SEED

Before we get into the secrets to growing strong pepper plants from seed, let’s just make sure you’ve got your seed starting basics covered. All the tricks in the world won’t help you if you don’t have these things in order.

You’ll need:

• pepper seeds
• good quality potting soil (not soil straight from the garden) The one I’ve linked uses coconut coir, a more environmentally friendly alternative to peat moss.
• jiffy pots (if you use them)
• a grow light, or south-facing window

Finally, peppers can take a long time to germinate. Don’t expect to see any green until around 2 weeks after you’ve sown the seeds.

With that out of the way, on to my 5 pepper growing tips!

New to seed starting in general? Here’s my primer on seed starting from your window.

1. PLANT TWO PEPPER SEEDLINGS PER CONTAINER

Peppers will grow well just by themselves, but they’re more productive if you plant two of them together. I started these peppers separately in jiffy pots, then grouped them together when it was time to move them to bigger pots.

As you can see, the stem growth isn’t affected and they are looking very healthy.

Curious about these newspaper pots? Here’s how to make them.

2. START PEPPERS FROM SEED INDOORS 8-10 WEEKS BEFORE THE LAST FROST DATE

What is the best time to plant peppers? Ideally, you’ll start the seeds indoors 8-10 weeks before your last frost date, harden them off to survive the outdoors the week after the frost date, then plant them in the ground the week after that.

Peppers have a longer growing season, so if you’re gardening in Zone 3 like I am, or some other cold climate, you must start them in that time frame. For me, that means I’ll start them mid to late February, harden them off mid-May, then set them into the garden in late May or even early June.

Sure, they’ll get quite large and you’ll have to top them off (more about that later), but you’ll be able to harvest peppers all season long, as opposed to one pepper at the end of the summer.

I don’t know if you can notice, but these plants are so big that my 7-year-old is curled up behind them, hiding:

If you’re having trouble deciding what pepper varieties to plant, here are my favourite pepper varieties for beginners.

3. KEEP THE GROW LIGHT CLOSE (OR USE A SOUTH-FACING WINDOW)

Nobody likes leggy seedlings! (Leggy seedlings are when your plants are stretched out because they’re trying to reach the light source). You can avoid this fate for your plants by keeping the grow light only 1 or 2 inches away.

If you’re growing your peppers in a south-facing window, you won’t have to move the light, but you will have to move the plant. Turn your peppers around every few days so they don’t lean to one side. You’ll likely turn them every day after they first germinate, then every few days once they’ve established a bit more.

Related: The Best Grow Lights for Seedlings (from Budget to Bougie)

4. PINCH PEPPER PLANTS AT THE 8-10 LEAF STAGE

Want strong stems and lots of side growth? Then you need to prune your pepper plants! When the plant reaches the 8 or 10 leaf stage, pinch off the last 2-4 leaves on the top of the plant.

Yes, you will likely feel like a plant murderer for topping off your plants. But–I promise you that you will be rewarded with thick stalks, a bushy pepper plant, and lots of peppers!

Here’s a video showing exactly how easy it is to top off your peppers:

5. PLANT IN THE RIGHT LOCATION

Once you grow that perfect pepper from the seed, your job isn’t done! Peppers do not grow very tall and like as much sun and heat as possible. Plant them in a container, or in a spot in the garden that gets 6 or more hours of sun a day, in the hottest spot possible. (If you live somewhere very warm, you might want to ignore the hottest-spot-possible advice. Where I garden in Zone 3, this is very good advice.)

If you have access to a greenhouse or high tunnel, giving your peppers some of this precious real estate will help you have much better peppers. The peppers benefit from the extra heat and have a much better chance of growing larger.

Finally, don’t plop the pepper plant right next to a vegetable that will be tall. My peppers have suffered next to tomatoes or zucchini because both plants have grown larger than anticipated and shaded my poor peppers out.

I have much better luck planting my peppers beside shorter crops like bush beans, lettuces, and root vegetables.

There you have it–my best tips and tricks to growing beautiful peppers! With the right light, water, and a little know-how, you can grow your own peppers like these.

NEED MORE HELP IN THE GARDEN?

Green thumbs aren’t just given out at birth. They’re a combination of learning about gardening and trial and error. If you wish you knew more about gardening and had more confidence in your abilities, you need the Growing Roots Gardening Guide.

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Happy gardening!