How to grow pepper
Family Solanaceae. Hardy to USDA hardiness zone 4a+ (U.S. Department of Agriculture). Full sun. Ready in 60-90 days.
Sun
Full sun
Spacing
18 in
Days to harvest
60-90 days
Hardiness
Zone 4a+
What growers actually recorded
Loading zone 7b results…
When to plant pepper
- Start indoors: ~8 weeks before last frost.
- Transplant out: ~2 weeks after last frost.
Companion plants for pepper
Plant with: Basil, Onion, Carrot.
Avoid near: Beans, Fennel.
Common pests & problems
Aphids, flea beetles. Row cover early season.
Feeding & fertilizer
N-P-K ratio: Low N (5-10-10) once fruiting starts
Organic options: Compost 2-3 in. at planting · Fish emulsion every 2 wks while young · Bone meal + kelp at flowering for calcium/potassium
When to feed: Compost at planting → light nitrogen through vegetative → switch to P/K when flowers appear.
Watch for: All leaves, no fruit = too much N. Blossom-end rot = calcium deficit + uneven watering.
N = nitrogen (leaves), P = phosphorus (roots and flowers), K = potassium (fruit and disease resistance). How to read a fertilizer label →
Grower's tip
Pinch first flowers on transplants so the plant invests in roots before setting fruit.
When to plant pepper in your zone
Free month-by-month sowing and transplanting lists, built from frost dates for your USDA (United States Department of Agriculture) hardiness zone.
Soil & water for pepper
Soil & pH
6.2-6.8: slightly acidic
Loose, deep loam. Break up compaction 12 in down; tomatoes and peppers root deeply when given the room.
Work 2-3 in of compost + a handful of bone meal per plant into the hole. Warm soil to 60°F+ before transplanting; black plastic mulch 2 weeks ahead helps in the North.
Watering
1-1.5 in / week, more in fruit set
Deep soak at the base twice a week. Drip or soaker hose beats overhead watering: wet leaves invite early blight.
Stick your finger 4 inches in near the stem. If it's dry at the second knuckle, water. If it's still damp, wait. Flipping from bone-dry to soaked is what cracks fruit and brings on blossom-end rot.
Knowing when to harvest
- Sweet peppers can be picked green, but color-ripe fruit has 2-3× the vitamin C and much more flavor.
- Use scissors: pulling breaks the brittle stems.
- First hard frost ends the plant; strip mature fruit ahead of it.
Storing & keeping
Fridge crisper, 45-50°F, 1-2 weeks. Freeze diced without blanching. Dehydrate hot peppers whole for years of shelf life.
What to expect
Per plant: 5-10 large sweet peppers; 30-100 chilies
Troubleshooting pepper
Flowers drop without setting fruit
Likely cause: Nights below 60°F or days above 90°F
What to do: Wait for the weather to normalize; peppers self-correct.
Sunscald (white patch on fruit)
Likely cause: Sudden loss of leaf cover
What to do: Keep foliage healthy; use shade cloth if a heat wave follows heavy pruning.
Varieties worth growing
Corno di Toro (sweet)
Sweet, thin-walled, prolific and shade-tolerant.
Poblano (mild chili)
The stuffing chili; dries as ancho.
Jalapeño Early (hot)
Ripens in cool-summer regions where hotter chilies won't.
Growing pepper in containers
5-gallon minimum, one plant per pot. Peppers actually produce better slightly root-bound.
Nutrition
High in lycopene (tomato), capsaicin (hot pepper), vitamin C, and potassium.
Common questions
Why are my hot peppers not hot?
Cool nights and generous water reduce capsaicin. Water less, keep the plant slightly stressed, and let fruit fully ripen for peak heat.
Should I pinch first flowers?
Yes on early transplants. The plant will build a stronger root system and out-yield in the long run.
Where these numbers come from
- USDA Plant Hardiness Zone Map (2023 revision). Zone assignment and the 30-year normals behind every cold-hardiness figure.
- NOAA NCEI 1991-2020 Climate Normals. Frost dates, growing-season length, and the probability bands on both.
- Cornell, UMN, and UC Davis Cooperative Extension crop guides. Spacing, days to maturity, soil pH targets, and per-plant yield ranges.
- USDA FSIS / FDA Produce Safety guidance. Wash, cure, and cold-storage handling numbers.
Ranges are regional guidance, not a promise for your yard. Your own logged results always override the published range.