Growing Italian Frying Peppers: A Complete Profile
By Growing Home Greens Team · September 30, 2026
Italian frying peppers are the long, tapered sweet types sold under names like Corno di Toro (“bull’s horn”) and Marconi. They are thinner-walled than a bell and meant for the frying pan or the grill.
Long fruit on a tall plant
Burpee lists Corno di Toro at 70 days and Marconi Rosso at 72 days from transplant, with fruit around 8 to 10 inches long and plants reaching about 36 inches. That fruit length is the reason to give them a stake: a plant carrying several foot-long peppers can bend over in wind.
Wait for full color for the sweetest fruit
Like most sweet peppers they can be picked green, but the flavor this type is grown for comes when the fruit turns red or yellow. Johnny’s notes that its Carmen hybrid gets noticeably sweeter as it colors up, at about 60 days to green and 80 to full red.
Start seed indoors about eight weeks before your last frost. One plant per square foot fits in the Garden Designer. The Bell Pepper profile covers the general care these share with bells, and the companion guide lists neighbors.
Hot nights and dropped flowers
Pepper flowers fall off without setting fruit when nights stay above about 75°F, per the University of Delaware’s Weekly Crop Update. In zones 9 and up, expect a midsummer gap in fruiting; our zone pages flag it.
Growing it next to other peppers
Different pepper varieties cross-pollinate easily, hot ones included. NC State Extension notes that when hot and sweet peppers cross, the heat shows up in later generations grown from saved seed, and suggests keeping varieties 20 to 30 feet apart if you plan to save your own. Baker Creek, which grows seed for sale, isolates varieties by at least 500 feet. If you buy fresh seed each year, you can plant sweet and hot peppers side by side.
Sources: Burpee, Corno di Toro; Burpee, Marconi Rosso; NC State Extension, Saving Your Own Seed; University of Delaware Weekly Crop Update.
Companion planting guide for Italian Frying Pepper (Corno di Toro, Marconi) · Find your planting dates
Typically viable in USDA zones 3-11. Not sure your zone? Look it up by ZIP code.
Mature height: 2.5-3 ft
Method: Start indoors: Start indoors from seed, then transplant outside. It needs a head start most zones can't give it by direct-sowing alone.
When to plant Italian frying pepper (Corno di Toro, Marconi), by zone
Every zone Italian frying pepper (Corno di Toro, Marconi) grows in. Pick your zone in the header and it will be highlighted here. Each zone links to its full page.
| Zone | Start indoors | Sow or plant out | Harvest |
|---|---|---|---|
| 3a & 3b | Apr 4–Apr 11 | Jun 13–Jun 20 | Aug 22–Aug 29 |
| 4a & 4b | Mar 20–Mar 27 | May 29–Jun 5 | Aug 7–Aug 14 |
| 5a & 5b | Mar 15–Mar 22 | May 24–May 31 | Aug 2–Aug 9 |
| 6a & 6b | Feb 28–Mar 7 | May 9–May 16 | Jul 18–Jul 25 |
| 7a & 7b | Feb 13–Feb 20 | Apr 24–May 1 | Jul 3–Jul 10 |
| 8a & 8b | Jan 28–Feb 4 | Apr 8–Apr 15 | Jun 17–Jun 24 |
| 9a & 9b | Dec 21–Dec 28 | Mar 1–Mar 8 | May 10–May 17 |
| 10a & 10bSpring window | Dec–Feb | Feb–Apr | ~70 days after transplanting |
| Summer window | May–Jul | Jul–Sep | ~70 days after transplanting |
| 11a & 11bSummer window | Jun–Dec | Aug–Feb | ~70 days after transplanting |
Harvest dates are about 70 days after the sow or plant-out date, not after starting seeds indoors.
See exact start-indoors, direct-sow, and harvest dates for your zone →
How many Italian Frying Pepper (Corno di Toro, Marconi) plants fit per square foot?
Spacing: 1 per square foot (square-foot-gardening spacing). Mature height: 2.5-3 ft.
Soil & water: pH 6-6.5. Needs well-drained soil. Amend with lime if soil pH falls below 6.
Good companions for Italian frying pepper (Corno di Toro, Marconi)
- Basil: Reputed to repel aphids and improve pepper growth nearby, but a controlled garden trial testing this same claim on a related crop found no pest-reduction benefit from basil, and found higher pest counts on the basil-companioned plants. Treat this pairing as unproven, not as a working pest deterrent.
- Onion: Reputed to deter many common pepper pests, though this specific pairing hasn't been tested the way onion/carrot pest-masking has. Treat it as garden tradition.
Varieties worth considering
- Carmen (F1): An AAS-winning Corno di Toro type, early and adaptable at 60 days to green and 80 to full red, with flavor that gets noticeably sweeter as it colors up. (source) Buy seeds: True Leaf Market · High Mowing Organic Seeds
Why each variety is listed comes from the source shown next to it. We haven't grown these ourselves yet, so treat this as a research-backed starting point, not a personal endorsement. The buy links are separate from those sources: they go to seed suppliers that sell that exact variety, and we may earn a commission on some of them.
Where to buy Italian frying pepper seeds
The varieties we recommend above each have their own buy links, for the suppliers that sell that exact variety.
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See it growing
Search YouTube for "growing Italian frying pepper (Corno di Toro, Marconi)" videos → (a live search, not a hand-picked video; results vary and aren't vetted by us)
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Growing Italian Frying Pepper (Corno di Toro, Marconi): Corno di Toro and Marconi: long, horn-shaped sweet peppers that get sweeter as they turn red.
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