How to Grow Bell Peppers: A Simple Guide from Seed to Harvest
How to grow bell peppers in the garden and on the patio: starting seeds, planting out, bell peppers in pots, simple bell pepper plant care, the best sweet pepper varieties, and when to harvest bell peppers green or fully colored.
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Bell peppers are one of the most rewarding vegetables for a sunny garden or patio. The plants are tidy and compact, and each one can give you a steady supply of crisp, sweet peppers through summer and into fall. Unlike chili peppers, bell peppers have no heat; they are grown for their thick, juicy walls and sweet flavor.
This guide explains how to grow bell peppers step by step. You will learn how to start seeds indoors, when to plant out, how to grow bell peppers in pots, what good bell pepper plant care looks like, which sweet pepper varieties are reliable, and when to harvest bell peppers for the best flavor. You will also find a clear overview of common problems and how to solve them.
Bell Peppers vs. Other Peppers
Bell peppers and chili peppers are the same species, Capsicum annuum, but they are grown for different reasons. Many older gardening articles mix the two up, which leads to confusing advice. Here is the difference:
| Bell (sweet) peppers | Chili (hot) peppers | |
|---|---|---|
| Heat | None | Mild to extremely hot |
| Fruit | Large, blocky, thick walls | Usually smaller and thinner |
| Use | Fresh, roasted, stuffed, salads | Spice, sauces, drying |
| Days to harvest | About 70 to 85 days from transplanting (University of Maryland) | Varies widely; hot types are often slower |
| Growing needs | Warmth, full sun, even moisture | The same |
The basic growing method is the same for both. If you want to grow hot peppers too, see our guide on how to grow chili peppers.
Sweet Pepper Varieties to Try
Choosing the right sweet pepper varieties makes a big difference, especially in areas with a short summer. Utah State and Iowa State recommend several reliable varieties:
| Variety | Type | Recommended by |
|---|---|---|
| California Wonder | Classic green-to-red bell | Utah State |
| Bell Boy | Productive green-to-red bell | Utah State, Iowa State |
| King Arthur | Large bell | Utah State, Iowa State |
| Ace | Early bell, good for short seasons | Utah State |
| Big Bertha | Very large bell | Utah State |
| Gypsy | Tapered sweet pepper, yellow to red | Utah State |
| Early Sunsation | Early yellow bell | Iowa State |
| Orange Blaze | Orange sweet pepper | Iowa State |
| Purple Beauty | Purple bell | Iowa State |
| Sweet Banana | Long, mild banana pepper | Iowa State |
For containers and short seasons, early sweet pepper varieties such as Ace and Early Sunsation are a good choice. Large varieties such as Big Bertha need a long, warm summer to ripen to full color.
How to Grow Bell Peppers from Seed
Bell peppers need a long, warm season, so in most regions you start them indoors or buy young plants. If you want to know how to grow bell peppers from seed, follow these steps:
Do not dry seeds in hot sun or soak them for long periods; simply sow fresh seed in warm, moist seed-starting mix.
Short on space indoors? See our windowsill garden guide for tips on growing seedlings under lights.
When and How to Plant Out
- Harden off seedlings for 7 to 10 days by setting them outside for a few hours a day and gradually increasing time and sun.
- Utah State advises planting when the soil is at least 60°F and all frost danger has passed.
- The University of Maryland warns that planting before the soil reaches 65°F causes plants to “just sit there.”
- Iowa State gives mid-May as a typical planting date in central Iowa, with June 20 as the final practical date there.
- Water plants in well after planting and protect them from strong wind for the first few days.
Sun, Soil and Spacing
| Need | Recommendation | Source |
|---|---|---|
| Sun | At least 6 hours of direct sun; 8 to 10 hours is better | University of Maryland |
| Soil | Well-drained, rich in organic matter | University of Maryland, Utah State |
| Spacing | About 18 inches between plants | Iowa State, Utah State |
| Rows | 24 to 30 inches apart (Iowa State); 18 to 24 inches (Utah State) | Iowa State, Utah State |
| Beds | Double, staggered rows in 2-foot-wide beds also work well | University of Maryland |
Peppers are related to tomatoes, potatoes and eggplant. Do not plant them where these crops grew in the last few years; see what grows well with tomatoes for crop rotation and companion tips, and how to build a raised garden bed if your soil drains poorly.
How to Grow Bell Peppers in Pots
Bell peppers in pots are ideal for patios, balconies and small gardens. Containers also warm up faster in spring than garden soil, which peppers love. The University of Maryland gives 5 gallons as the minimum container size for peppers.
| Container tip | Details |
|---|---|
| Size | 5 gallons minimum per plant; larger is better for big varieties |
| Drainage | Drainage holes are essential |
| Mix | Good-quality potting mix with some compost; no garden soil |
| Sun | The sunniest, warmest spot you have |
| Watering | Check daily in summer; water when the top inch feels dry |
| Feeding | Liquid fertilizer every two to three weeks once flowering starts |
| Support | A short stake or small cage for plants heavy with fruit |
Compact sweet pepper varieties such as Ace, Bell Boy and Early Sunsation are well suited to bell peppers in pots. For pot sizes and potting mix, see our guide to container gardening and how to grow tomatoes in pots, which follows the same principles.
Bell Pepper Plant Care
| Task | How | Source |
|---|---|---|
| Watering | Deep and infrequent, 1 to 2 inches per week | Utah State |
| Even moisture | Uniform soil moisture is the goal; drip irrigation and soaker hoses work very well | University of Maryland |
| Mulch | Straw, dry grass clippings or leaves; Utah State advises waiting until the soil is warmer than 75°F | University of Maryland, Utah State |
| Feeding | Medium needs: starter fertilizer at planting, side-dress after the first fruits set | University of Maryland |
| Side-dressing | A small amount of nitrogen fertilizer 4 and 8 weeks after transplanting | Utah State |
| Support | Cages or stakes; branches are brittle when loaded with fruit | University of Maryland |
Good bell pepper plant care comes down to sun, warmth and steady water. The University of Maryland notes that dry conditions cause blossom drop, small fruit and blossom-end rot. A hose with a gentle nozzle helps you water at the base without splashing leaves; see our garden hose nozzle guide and how often to water your vegetable garden.
Avoid overfeeding. Utah State lists excessive nitrogen as one of the causes of blossom-end rot, and too much nitrogen also gives you lush leaves with few peppers. Consistent bell pepper plant care beats heavy feeding every time.
Temperature and Fruit Set
Bell peppers are fussy about temperature. Iowa State gives 70 to 85°F as the optimum daytime temperature for growth and notes that maximum fruit set on bell peppers generally occurs at 70 to 80°F.
- In cool springs, wait for warm nights before planting out.
- In heat waves, flowers may drop; keep plants well watered and give afternoon shade if possible.
- Flower drop in hot weather is usually temporary; plants start setting fruit again when temperatures moderate.
- Keep enough leaves on the plant: Utah State notes that sunscald occurs when fruits are exposed to direct sunlight during hot, dry weather.
When to Harvest Bell Peppers
Knowing when to harvest bell peppers is simple once you know the options. The University of Maryland advises harvesting sweet peppers when they reach full size; they can be picked green or left to ripen and change color on the plant.
| Stage | Flavor | Tip |
|---|---|---|
| Green, full size and firm | Fresh, slightly grassy | Picking green encourages the plant to set more fruit |
| Changing color | In between | Good for cooking and salads |
| Fully colored (red, yellow, orange, purple) | Sweeter | Colored peppers have more vitamin A and C (University of Maryland) |
Sweet types are usually ready about 70 to 85 days after transplanting, according to the University of Maryland. Utah State notes that peppers need 35 to 45 days from flowering to reach full color, so colored bell peppers take noticeably longer than green ones. Always cut peppers from the plant with pruners or snips instead of pulling; the University of Maryland warns that pulling breaks the branches.
If you are unsure when to harvest bell peppers of a new variety, check the seed packet: it lists days to maturity and the final color.
Bell Pepper Growing Timeline
This overview shows how to grow bell peppers from seed to harvest, based on timing from the University of Maryland and Utah State:
| When | Stage | What to do |
|---|---|---|
| 8 to 10 weeks before the last frost | Sowing | Sow ½ inch deep; keep at about 80°F until seeds sprout |
| After germination | Seedlings | Bright light; grow on at 65 to 75°F |
| 1 to 2 weeks before planting out | Hardening off | Gradually get plants used to sun and wind |
| After the last frost, soil at least 60 to 65°F | Planting out | Full sun, 18 inches apart or one plant per 5-gallon pot |
| About 70 to 85 days after transplanting | Green harvest | Cut full-size, firm peppers |
| 35 to 45 days after flowering | Colored harvest | Red, yellow or orange peppers are sweeter |
In regions with a short summer, choose early sweet pepper varieties so the fruit has time to color before fall.
Storing Bell Peppers
| Method | How long | Source |
|---|---|---|
| Cool, humid storage (45 to 50°F, high humidity) | Up to about 2 to 3 weeks | University of Maryland, Iowa State |
| Storage at 50 to 55°F | About 1 to 2 weeks | Utah State |
| Freezing (washed, seeded and sliced) | Several months | General kitchen practice |
| Roasting and freezing | Several months | General kitchen practice |
Store only firm, undamaged peppers and use any with soft spots first.
How to Grow Bell Peppers: 7 Common Mistakes
| Mistake | Why it hurts | Better approach |
|---|---|---|
| Sowing too deep | Seeds may not reach the surface | Sow about ½ inch deep |
| Planting into cold soil | Plants stall for weeks | Wait for soil of at least 60 to 65°F |
| Too little sun | Few flowers and small fruit | Choose the sunniest spot you have |
| Pots that are too small | Plants dry out and stay small | Use 5 gallons or more per plant |
| Irregular watering | Blossom drop and blossom-end rot | Water deeply and evenly; mulch |
| Too much nitrogen | Lots of leaves, few peppers | Feed moderately |
| Pulling peppers off | Branches snap | Cut peppers with pruners |
Avoid these and you already know most of what matters about how to grow bell peppers successfully.
Bell Pepper Problems and Solutions
| Problem | Likely cause | Solution |
|---|---|---|
| Dark, sunken spot at the bottom of the fruit | Blossom-end rot: poor water management, too much nitrogen or drought stress (Utah State) | Keep soil evenly moist; mulch; feed less nitrogen |
| Pale, papery patches on the fruit | Sunscald | Keep leaf cover; provide afternoon shade in heat waves |
| Flowers drop | Too cold, too hot or too dry | Wait for warm nights; water evenly; shade in heat |
| Leaf spots | Bacterial leaf spot (University of Maryland) | Water at the base; remove affected leaves; rotate crops |
| Mottled, distorted leaves | Virus diseases (University of Maryland) | Remove affected plants; control aphids |
| Sticky leaves, small insects | Aphids | Spray off with water; see our garden insects guide |
| Small peppers | Dry soil, too little sun or a crowded plant | Water evenly; more sun; give space |
See our garden insects guide and white bugs on plants for pest control tips.
What You Need
| Item | Why it helps | More information |
|---|---|---|
| Seed trays and a heat mat | Warm, even germination | About 80°F until seeds sprout |
| 5-gallon or larger pots | Room for healthy roots | Drainage holes essential |
| Hose with gentle nozzle | Even watering at the base | See our garden hose nozzle guide |
| Pruners or snips | Cutting peppers without breaking branches | See our gardening tool sets guide |
| Gardening gloves | Planting, mulching and weeding | See our gardening gloves guide |
| Kneeling pad | Comfortable work in low beds | See our garden kneeler guide |
| Cages or stakes | Support for heavy plants | Install at planting |
| Lightweight expandable hose | Easy daily watering of patio pots | See our expandable garden hose guide |
Frequently Asked Questions
How do I grow bell peppers?
Start seeds indoors 8 to 10 weeks before the last frost, plant out into warm soil and full sun, water deeply and evenly, feed moderately and harvest at full size, green or fully colored.
How long do bell peppers take to grow?
Sweet types are usually ready about 70 to 85 days after transplanting. Fully colored peppers take longer, because they need 35 to 45 days from flowering to reach full color.
Can I grow bell peppers in pots?
Yes. Use a container of at least 5 gallons per plant with drainage holes, good potting mix, full sun and regular watering and feeding.
When should I harvest bell peppers?
Harvest when they reach full size and feel firm. Pick them green, or leave them on the plant until they turn red, yellow or orange for a sweeter taste.
Are red and green bell peppers the same plant?
Usually, yes. Most green bell peppers are simply unripe fruit that would turn red, yellow or orange if left on the plant.
Why are colored bell peppers sweeter?
They are fully ripe. The University of Maryland notes that colored peppers are sweeter and contain more vitamin A and C.
How much sun do bell peppers need?
Full sun. Choose the sunniest spot in your garden or on your patio.
How much water do bell peppers need?
About 1 to 2 inches per week, applied deeply and evenly. Plants in pots may need water daily in summer.
Why are my bell pepper flowers falling off?
Usually because of temperatures that are too low or too high, or dry soil. Maximum fruit set occurs at about 70 to 80°F.
Why do my bell peppers have black spots on the bottom?
That is blossom-end rot, caused by uneven watering, drought stress or too much nitrogen. Keep the soil evenly moist and mulch.
How deep should I plant bell pepper seeds?
About ½ inch deep. Planting too deep delays or prevents germination.
Can I save seeds from store-bought bell peppers?
You can try, but many are hybrids that do not grow true to type. Buying seeds of a named variety gives more reliable results.
Why are my bell peppers not turning red?
Coloring takes time: Utah State notes 35 to 45 days from flowering to full color. Cool weather slows it further. Some peppers stay green simply because they are picked before they ripen.
Can bell peppers grow in partial shade?
They grow, but they produce fewer and smaller peppers. The University of Maryland recommends at least 6 hours of direct sun, and 8 to 10 hours is better.
How should I store bell peppers?
In a cool, humid place at about 45 to 50°F for up to two to three weeks, or slice and freeze them for longer storage.
Final Thoughts
Now you know how to grow bell peppers: start seeds early and warm, plant out into warm soil and full sun, and keep watering and feeding steady. Bell peppers in pots do very well on a sunny patio, and compact sweet pepper varieties make it even easier.
With simple bell pepper plant care, your plants will give you a long harvest. Knowing when to harvest bell peppers, green for a fresh crunch or fully colored for extra sweetness, lets you enjoy them exactly the way you like.
Sources: University of Maryland Extension: growing peppers in a home garden; Utah State University Extension: how to grow peppers in your garden; Iowa State University Extension: growing peppers in the home garden.
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