How to Grow Bell Peppers: Complete Guide

• •Start pepper seeds indoors 8 to 10 weeks before your last spring frost, or buy hardened nursery transplants.
• •Set plants outdoors 2 to 3 weeks after the last frost, once night temperatures stay reliably above 55°F and soil has warmed to about 65°F.
• •In Zone 10 they can be planted as a fall crop.

📅 View the full zone-by-zone planting guide

1. 1

   Start seeds indoors early, warm and bright

   • •Because peppers are slow growers, sow seed 8 to 10 weeks before your last frost, two seeds per cell 1/4 inch deep in sterile starting mix.
   • •Keep soil at 70°F or warmer using a heat mat—germination below 60°F can take 3 weeks or fail entirely.
   • •Once seedlings emerge, move them under bright grow lights, water carefully, and thin to the strongest plant per cell.
   • •Pot up seedlings into larger containers if roots fill the cells before it is time to move them outdoors, and begin hardening off about 10 days before transplanting by exposing them gradually to wind and sun.
2. 2

   Transplant after frost, on a cloudy day

   • •Wait until all frost danger has passed and nighttime temperatures stay above 55°F, then set hardened transplants 12 to 18 inches apart in rows 2 to 3 feet apart, in a bed where no solanaceous crop has grown for 3 years.
   • •Plant at the same depth they grew in their pots, or bury leggy stems up to the lowest leaves.
   • •Choose a cloudy day or late afternoon to reduce shock, water deeply, and install a small stake or tomato cage at planting time so you will not disturb roots later.
   • •Avoid sites that stayed wet in spring, since peppers hate soggy feet.
3. 3

   Mulch, water evenly, and keep roots warm

   • •Once plants have settled in (about a week after transplanting), apply a 2 to 3 inch layer of straw, chopped leaves, or black plastic mulch to lock in soil moisture, suppress weeds, and keep roots warm.
   • •Water deeply once or twice a week—about 1 to 2 inches total—aiming the hose at the base and avoiding wetting leaves.
   • •Let the top inch dry between soakings rather than spritzing daily.
   • •Consistent even moisture is the single biggest defense against blossom-end rot and poor fruit set during hot spells.
4. 4

   Pinch for bushiness and feed for fruit

   • •When young plants reach about 8 inches tall, pinch out the growing tip to encourage branching and a sturdier, bushier habit that supports heavy fruit loads.
   • •As soon as flower buds appear, side-dress with a low-nitrogen, higher-potassium organic fertilizer such as a tomato formulation, and repeat every 3 to 4 weeks through summer.
   • •Keep weeds pulled by hand or by shallow cultivation, because peppers have shallow roots.
   • •In extreme heat, shade cloth or floating row cover over the plants during the hottest part of the day prevents blossom drop and sunscald.
5. 5

   Harvest with scissors and keep picking

   • •Begin harvesting as soon as fruits reach a usable size—you can pick green bells early, or leave them on to turn red, orange, or yellow for sweeter, vitamin-rich fruit.
   • •Always cut the stem with a sharp knife or pruners rather than pulling, since twisting can break brittle branches and reduce later yields.
   • •Harvesting regularly stimulates the plant to set more fruit.
   • •At season's end, any remaining green bells can be picked and will continue to color up indoors in a warm spot; clear all plant residue to reduce overwintering pests and diseases.

• Use a 3–5 gallon pot with drainage:
  • •Peppers develop substantial roots; a 12-inch-wide, 10–12-inch deep pot (3–5 gallons) is the minimum.
  • •One plant per pot, with drainage holes and a tray beneath to catch runoff.
• Pick compact and dwarf varieties: Compact bells such as 'Basket of Fire', 'Sweet Sunset', or dwarf blocky varieties perform best in pots; tall standard bells can work but need staking and daily watering in heat.
• Fill with rich, free-draining mix:
  • •Use quality potting soil blended with 20 percent compost and a little perlite.
  • •Garden soil compacts in pots and causes root rot; do not reuse tired mix from past seasons without adding compost.
• Water daily in summer, feed weekly:
  • •Pots dry fast—check daily and water until it runs out the bottom.
  • •Once flowers appear, dilute liquid tomato or high-potash fertilizer every 10–14 days; avoid high-nitrogen plant food.
• Place in full sun, shelter from wind:
  • •Set pots where they get 6+ hours of direct sun daily.
  • •In wind-exposed patios, group pots together or place against a wall; peppers are brittle and loaded branches snap easily without a small stake.

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  Pinch the top at 8 inches

  • •When seedlings reach about 8 inches tall, snap out the growing tip.
  • •This forces side branching, creating a sturdier bush that spreads out, supports more fruit, and shades its own stems against sunscald.
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  Remove damaged or diseased wood

  • •At any time, cut out broken, blackened, or moldy branches back to healthy tissue.
  • •This prevents disease from spreading and improves air flow; sanitize pruners between plants with rubbing alcohol.
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  Thin crowded inner growth

  • •If the center of a plant becomes a dense tangle, snip a few of the oldest or crossing stems early in summer.
  • •Do not strip leaves—pepper foliage is needed to shade fruit from sunscald.
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  Stake heavy-fruiting plants

  • •As fruits swell, tie main stems to a short stake or use a small tomato cage.
  • •Branches loaded with bells snap under wind or weight; tie loosely with soft twine and retie as plants grow.

• •Bell peppers take about 60 to 90 days from transplanting to a usable green size, and another 2 to 3 weeks to mature to their full red, orange, or yellow color.
• •Pick at any stage with a sharp knife; regular picking keeps plants producing.
• •Fruits become sweeter and more nutritious the longer they stay on the plant.