Pepper

Capsicum annuum

Family Solanaceae

Annual annualNative & introducedZones 2-11

Botanical illustration of Pepper

That red bell pepper commanding a premium at the store is just a green one somebody waited on — ripening doubles the sweetness. Peppers hand you the whole spectrum, sweet to scorching, from July until frost, in colors no produce aisle bothers stocking.

Plants stay a tidy 18-30 inches — friendly to beds, pots, and small spaces — and being self-fertile, even one plant produces honestly. They love real summer heat and sulk in cold, so give them your warmest full-sun spot and let the season do its work.

Where to buy pepper — 10 nurseries compared

  • Full Sun
  • Moderate water
  • Moderate growth
  • Excellent edible
  • None winter chill
  • Juglone-sensitive
Pepper — a print from the Plant Library collection

From the print shop

Growing pepper? Hang it.

Our Plant Library collection carries pepper — Capsicum annuum, print Nº 361, “Pepper.”

526 designsfrom $12.99white or black backgroundmatte poster, unframed

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Will it fruit where you are?

Enter your ZIP — we look up your USDA hardiness zone (2023 map) and check it against what pepper actually needs.

Life cycleAnnual
Winter chillNone
PollinationSelf-fertile

Pepper · Common problems

Common pepper problems

Pests, diseases and weather to keep an eye on.

Pepper · Growing & propagation

Growing pepper

Light, water, soil, propagation and the season’s jobs.
What it needsThe details
Light
Full Sun
Water
Moderate, even moisture

Dry spells make hot peppers hotter

Soil
Well-drained, Rich · pH 6.0 - 6.8
Fertilizer
Light feeder. Compost at planting

Side-dress at fruit set. Excess N = leaves not fruit.

Pruning
None (annual)

Pinch first flower buds on transplants to push root growth.

Spacing
18 inches

How to plant & propagate pepper

Maturity
60-90 days from transplant
From seed
Start indoors 8-10 wks before last frost; germinates 75-85°F

Slow, warmth-dependent

Propagate
From seed

Pepper · Harvest & keeping

What you get from pepper

How long before it bears, how much it gives, how you know it is ready, and how long it keeps once picked.
Botanical illustration of Pepper
Years to first harvest
0 years
Typical yield
5–18 lbs per 10ft row
What you eat
Fruit
How to tell it is ready
Harvest full-sized green fruit or fully colored ripe fruit with firm walls
How long it keeps
1-2 weeks refrigerated

Pepper · Seasonal care & spray guidance

The pepper growing playbook

Field-tested instructions for every job pepper asks of you, compiled from university extension guidance — in the order the season brings them.

When to spray pepper

Growing season. Rarely needed. Fixed copper if bacterial spot appears in wet years.

As growth begins

early spring

3 jobs
SowingIn spring

Start pepper seed indoors 8 to 10 weeks before your last frost

Count back 8 to 10 weeks from your average last frost date and sow indoors. Hold the flat at 80F to 90F on a heat mat until the seedlings emerge, then grow them on at 65F to 75F with lights 2 to 3 inches above the tops for 14 to 16 hours a day. A transplant is ready when it is 5 to 8 inches tall and stocky with 6 to 9 mature leaves. Pepper seed germinates slowly and only in genuinely warm soil, and the plant needs a long warm season to set and ripen fruit, so a head start indoors is the difference between a crop and a few late fruits.

Planting outIn spring

Set peppers out only once nights stay above 50F

Wait until soil has reached 60F and nighttime lows are reliably above 50F, which is usually well after your last frost date, not on it. Space plants 18 inches apart in rows 30 to 36 inches apart, setting them at the same depth they grew in the pot. Peppers stall in cold soil and abort their flowers when nights fall below 55F, so a plant set out early is often overtaken by one set out two weeks later.

MulchingIn spring

Black plastic to warm the soil, organic mulch only once it is hot

Lay black plastic mulch or black landscape fabric before planting to warm the soil, hold moisture and suppress weeds. If you prefer straw or herbicide-free grass clippings, wait until the soil is warmer than 75F, then lay it 3 to 4 inches deep. Organic mulch insulates soil rather than warming it, so laid down early it locks in the cold that peppers are trying to escape. Black plastic does the opposite and also stops rain from splashing soil-borne bacteria up onto the lowest leaves.

While it flowers

at bloom

1 job
WateringAt bloom

Steady deep water from first bloom to prevent blossom-end rot

From the first flowers through fruit development, water deeply and infrequently to deliver 1 to 2 inches per week, keeping the soil evenly moist rather than swinging between soaked and bone dry. The soil should form a ball in your hand without breaking apart. Keep soil pH at or above 6.0. Blossom-end rot is a calcium shortage in the fast-expanding young fruit, and calcium rides to the fruit only in water moving through the roots, so a dry spell during early fruit set starves the fruit tip even when the soil holds plenty of calcium.

Just after bloom

as the fruit sets

1 job
FeedingAfter fruit set

Side-dress nitrogen only after the first fruits have set

Wait until the first flush of peppers has set, then side-dress with nitrogen at about a quarter tablespoon per plant, placed 6 inches out to the side of the stem and watered into the soil. Utah State times the same two feedings at 4 and 8 weeks after transplanting, which is roughly when that first flush arrives. Apply phosphorus and potassium by soil test rather than by habit. Nitrogen given before fruit set buys leaves instead of peppers, producing a bushy, leafy plant that is slow to bear. Waiting until fruit is actually on the plant puts the nitrogen where it feeds the crop.

Through summer

the growing season

1 job
SprayingThrough summer

Bacterial leaf spot: fixed copper on a 10 to 14 day interval

If small water-soaked spots with gray to tan centers and dark borders appear on the leaves and older foliage starts yellowing and dropping, spray fixed copper every 10 to 14 days to slow the spread. Start from clean seed and transplants, and rotate peppers to new ground if infection was severe last year. The bacterium spreads in splashing rain and on your own hands and tools, and it overwinters in crop residue and soil, so copper is a barrier that protects healthy tissue rather than a cure for spotted leaves. Losing the canopy also exposes fruit to sunscald.

Harvest time

as it ripens, and picking

2 jobs
What to watch forAs fruit ripens

Check the fruit stem cap for corn borer frass

As fruit sizes up through mid and late summer, look under the stem cap of developing peppers for brown, sawdust-like excrement at the edge of the calyx, which marks a borer entry hole. Hand-pick where numbers are low, or spray Bt when small larvae are first active and still feeding on leaves, before they tunnel in. The second corn borer generation is the damaging one because it arrives when fruit is on the plant. Larvae enter beneath the stem cap and feed on the seed core, and the entry wound lets soft rot bacteria in, so once a larva is inside the fruit no spray can reach it.

HarvestingAt harvest

Cut peppers from the plant, never pull them

Cut the stem with snips or a knife rather than pulling, which snaps branches. Pick at full size and firm, plump, smooth skin. You do not have to wait for red. Full colour takes roughly 35 to 45 days from flowering, and leaving fruit to colour up costs further fruit set. Pepper branches are brittle and a pulled fruit tears the branch that was going to carry the next flush. Fruit left to ripen fully signals the plant to slow new fruit set, so green picking keeps the plant producing while colour picking buys sweetness and more vitamin A and C.

Pepper · Companion plants

Pepper companion plants

Avoid

Underlined names have their own growing guide in this library.

Pepper · Calculators & field guides

A little help in the garden.

Calculators for the figures. Field guides for the hands-on work.

Pepper · Yearly calendar

The pepper year, month by month

What pepper asks for, month by month.

Jan

No calendar activity is listed for this month.

MonthJanFebMarAprMayJunJulAugSepOctNovDec
Bloom
Harvest

BloomJune to August

HarvestJuly

What each band means

  • Bloom — flowers open — pollinators working, frost on blossoms is the danger.
  • Harvest — picking time — check ripeness every few days.

These are the species' typical months — expect them a few weeks earlier in warm zones and later in cold ones. Watch the plant, not just the calendar.

Pepper · Ecology & uses

Ecology & uses

What it does for the garden, and what it is grown for.
Botanical illustration of Pepper

Capsicum annuum

Pepper in the garden system

  • Herbaceous layer annual
Attracts
Birds
Moisture
Facultative / average
Deer
Browsed

Protect young plants

Origin
Introduced
Juglone
Pepper is sensitive to juglone

The toxin exuded by black walnut, butternut, and their relatives. Keep it 50+ ft from any walnut or hickory, or its leaves will yellow, wilt, and die back for no obvious reason.

What pepper is grown for

! Some parts toxic — see notesFoliage toxic — fruit safe

Use
Fresh
Use
Roasting
Use
Pickling
Use
Drying
Edible value
4/5

Harvesting & storing pepper

July - Frost. About 60-90 days from transplant from planting.

Edibility, identification, and traditional-use notes here are general reference — not medical or veterinary advice, and not a claim that any plant treats or prevents anything. Medicinal ratings record how strongly a plant features in herbal tradition, nothing more. Never eat or dose a plant you have not positively identified. More on how to use this library.

Pepper · Varieties & cultivars

Best pepper varieties & cultivars

There are far more than these — the ones below are the named varieties of pepper people actually plant.

Named varieties of pepper differ in days to maturity, disease resistance, flavor, and habit — pick one that fits your season and space.

23 varieties

Gypsy

Sweet, thin-walled — Earliest pepper listed at 65 days - the short-season pick. AAS winner. Thin walls fry and roast fast.

Where to buy ‘Gypsy’

Story Thyme Farms may earn a small commission from these links, at no cost to you — it never changes what we recommend.

Sources & plant identity

Know what you’re growing.
See where the knowledge comes from.

Botanical illustration of Pepper

Pepper

Capsicum annuum

The plant, at a glance.

Botanical name
Capsicum annuum
Plant family
Solanaceae
Growth habit
Annual
Origin
Introduced
USDA plant symbol
CAAN4
Invasive risk
Low
Every garden is different.

Hardiness, size and timing vary with your cultivar, soil and climate.

Rooted in research.

University extension research, brought together with hands-on growing experience at Story Thyme Farms.

Explore Pepper’s sources8 reference links
for Pepper

Research from these sources

Publisher marks identify sources, not sponsorship or endorsement.

Questions

Pepper questions, answered straight.

Do I need two pepper plants to get fruit?

No — pepper is self-fertile, so a single plant will set a crop. A second one usually improves yields, but it isn't required.

Is pepper safe for kids and pets?

With care. Foliage toxic — fruit safe Site it accordingly if children or pets roam the garden. This is general reference, not medical or veterinary advice — call a vet or poison control if something has actually been eaten.

When do you harvest pepper?

July - Frost. From planting, expect about 60-90 days from transplant to maturity.

What grows well with pepper?

Proven companions include basil, tomatoes, carrots — the full companion list, and what to keep away, is in the Growing tab above.

Elsewhere

Where pepper sits in the library.

Where pepper sits in the library

Grows in the same world