Grow file · Long Slim Cayenne (Capsicum annuum)
Cayenne
Capsicum annuum
The chile that dries. Thin-walled, straightforward, 30,000–50,000 SHU — it becomes flakes and powder as easily as it becomes sauce.
| Days to maturity | 75 days from transplant |
|---|---|
| Days to germinate | 7–14 days at 80 °F |
| Germination soil temp | 75–85 °F |
| Start indoors | 8 weeks before last frost |
| Transplant | 1 weeks after last frost |
| Spacing | 18″ between plants |
| Sun | 6–8 hours direct |
| Container size | 5 gal minimum per plant |
| Realistic yield | 1.8 lb per healthy plant, per season |
| Heat | 30,000–50,000 SHU |
Your dates, by zone
Built from each zone's average last frost and this cultivar's 75-day maturity. Zone averages are not your garden — enter your own frost date in the builder to shift every row.
| Zone | Sow indoors | Transplant | First pick |
|---|---|---|---|
| Zone 3 | Mar 20 | May 22 | Aug 5 |
| Zone 4 | Mar 17 | May 19 | Aug 2 |
| Zone 5 | Mar 5 | May 7 | Jul 21 |
| Zone 6 | Feb 24 | Apr 28 | Jul 12 |
| Zone 7 | Feb 6 | Apr 10 | Jun 24 |
| Zone 8 | Jan 31 | Apr 4 | Jun 18 |
| Zone 9 | Jan 3 | Mar 7 | May 21 |
| Zone 10 | Dec 6 | Feb 7 | Apr 23 |
| Zone 11+ | Nov 20 | Jan 22 | Apr 7 |
Tight means first pick lands within two weeks of that zone's average first fall frost. It is doable, with zero slack in the indoor start.
The pepper that becomes a pantry
Habaneros give you one sauce. A cayenne plant gives you a sauce, a jar of flakes and a tin of powder, because thin walls dry fast and evenly. One plant is a year of red pepper in three forms.
Thirty to fifty thousand Scoville is a clean, forward heat with almost no fruit or smoke behind it — which sounds like a criticism and is actually why it is so useful. It adds heat without adding flavour that has to be designed around.
Growing
Standard annuum culture: eight weeks indoors at 80 °F soil, transplant a week after last frost, 75 days to red. It is a lanky plant and it will fall over loaded — stake it, which also keeps pods off the soil and cuts anthracnose pressure sharply.
About 1.8 lb per plant, which dries down to roughly 3 oz of finished flake.
Drying, properly
- Pick fully red. Green cayenne dries grey and tastes of nothing.
- Halve anything thicker than a pencil so the interior dries at the same rate as the wall.
- Dehydrate at 125 °F until brittle — 8–12 hours. Higher is faster and destroys the aromatics.
- Cool completely before jarring. Warm pods sweat and the jar fogs.
- Store whole; grind as needed.
Sun-drying works in a genuinely arid climate and loses the race with mould anywhere humid. If your August dew point is above 60 °F, use the dehydrator.
Grinding warning: let the grinder settle for a minute before opening it. That cloud is aerosolised capsaicin and it will find your eyes.
How this crop actually fails
Named, specific, and in the order you're most likely to meet them.
Pods rot on the plant in late summer
Cause Anthracnose. Warm, wet weather plus fruit touching soil or dense foliage.
Fix Stake the plant so pods hang clear, water at the root not the leaves, and use a copper protectant preventatively before humid weather, not after lesions appear.
Dried pods go mouldy in storage
Cause Not dried through. A pod that is leathery rather than brittle still holds enough water for mould.
Fix Dry at 125 °F until a pod snaps rather than bends. Store in glass with a desiccant, not in a paper bag.
Powder tastes flat and dusty
Cause Ground months ago, or dried too hot. Above about 145 °F the aromatic compounds cook off.
Fix Store whole pods and grind in small batches. 125 °F, never higher.
What cayenne needs
Organic Cayenne (Long Slim) Seed
The long, thin, wall-thin cayenne that dries in a week and grinds to a clean red powder. If you want flakes and powder as well as sauce, this is the plant that does both.
$4.49Buy →
Organic Seed Starter Potting MixMust have
Seed-starting mix is not potting soil with a nicer label — it is finer, lighter, and low in nutrients on purpose, because a seedling's first roots want air and moisture, not fertiliser.
$15.82Buy →
Seedling Heat Mat + Digital ThermostatMust have
Peppers germinate on soil temperature, not air temperature. At 65 °F a habanero takes a month and half of them rot; at 85 °F it is up in eight days. The thermostat is the half that matters.
$27.89Buy →
T8 Full-Spectrum Grow Lights, 1 ft 4-packMust have
A south window in March delivers a fraction of the light a pepper seedling needs, and the plant tells you by stretching. Two inches of LED above the canopy for 16 hours a day fixes it permanently.
$38.69Buy →
5-Gallon Fabric Grow Bags, 5-Pack
Fabric pots air-prune roots and drain faster than a plastic pot can, which is the entire reason container tomatoes fail. Five gallons is the honest minimum for a pepper; a tomato wants ten.
$15.99Buy →
Ocean Forest Potting SoilMust have
Pre-charged with enough nutrition to carry a transplant for its first month without feeding, which is exactly the window when most container plants stall.
$25.99Buy →
Organic Tomato-Tone 3-4-6 with 8% CalciumMust have
The NPK ratio is the point: low nitrogen, higher potassium. Feed a tomato a high-nitrogen lawn fertiliser and you get a magnificent six-foot plant with four tomatoes on it.
$15.25Buy →
6" Micro-Tip Pruning SnipsMust have
Ninety percent of sauce-garden cutting is snipping a pepper stem or a basil node, and a fine-tipped snip does it better than any pruner. Pulling peppers by hand tears the branch.
$12.89Buy →
Food Dehydrator, 6 Stainless Trays
Sun-drying chiles works in Oaxaca and fails in Ohio — humidity lets mould win the race. Controlled 125 °F airflow dries a full cayenne harvest overnight, every time.
$143.97Buy →
One-Touch Coffee & Spice Grinder
Dried cayenne into powder in fifteen seconds. Dedicate one to chiles — grind coffee in it afterwards and you will find out exactly how well capsaicin sticks to plastic.
$25.99Buy →
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Sauces this plant is for
Last reviewed 2026-09-01. Numbers are cultivar-typical, not guarantees —tell us if yours ran different and we'll say so on the page.