Cosmo Savoy

Family: Asteraceae Leafy Green

Planting Schedule

Provide your location or planting zone to unlock dates and add Cosmo Savoy to a garden.

Sink your fork into Cosmo Savoy’s crisp, cool crunch—its leaves are richly textured with a Savoyed, ruffled surface and a bright, fresh green that feels as alive as it looks.

At maturity in about 50 days, this Romaine forms a tight, upright head with a tender, succulent bite and a pleasantly mild, clean flavor. Ideal for garden-fresh salads and elegant garnishes, Cosmo Savoy brings a refined, leafy presence to every plate with its sturdy structure and beautiful, crinkled leaves.

Light: Part SunMaturity: 50 DaysHabit: Rosette

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Cosmo Savoy Planting Dates by USDA Zone

Estimated US hardiness-zone windows for sow, transplant, and harvest. Enter a US ZIP above for exact local dates, or open a zone below.

Zone	Start Indoors	Sow / Transplant	Harvest
Zone 1a	Protected Environment Only
Zone 1b	May 11th	Jun 1st	Jul 21st – Aug 1st
Zone 2a	May 4th	May 25th	Jul 14th – Aug 29th
Zone 2b	Apr 24th	May 15th	Jul 4th – Aug 25th
Zone 3a	Apr 24th	May 15th	Jul 4th – Sep 1st
Zone 3b	Apr 28th	May 19th	Jul 8th – Sep 21st
Zone 4a	Apr 24th	May 15th	Jul 4th – Sep 24th
Zone 4b	Apr 22nd	May 13th	Jul 2nd – Sep 27th
Zone 5a	Apr 17th	May 8th	Jun 27th – Sep 30th
Zone 5b	Apr 13th	May 4th	Jun 23rd – Oct 5th
Zone 6a	Apr 10th	May 1st	Jun 20th – Oct 10th
Zone 6b	Apr 4th	Apr 25th	Jun 14th – Oct 16th
Zone 7a	Mar 30th	Apr 20th	Jun 9th – Oct 20th
Zone 7b	Mar 20th	Apr 10th	May 30th – Oct 28th
Zone 8a	Mar 11th	Apr 1st	May 21st – Nov 5th
Zone 8b	Mar 2nd	Mar 23rd	May 12th – Nov 12th
Zone 9a	Feb 13th	Mar 6th	Apr 25th – Nov 26th
Zone 9b	Jan 19th	Feb 9th	Mar 31st – Dec 9th
Zone 10a	—	Oct 1st	Nov 20th – Feb 28th
Zone 10b	—	Oct 1st	Nov 20th – Feb 28th
Zone 11a	—	Oct 1st	Nov 20th – Feb 28th
Zone 11b	—	Oct 1st	Nov 20th – Feb 28th
Zone 12a	—	Oct 1st	Nov 20th – Feb 28th
Zone 12b	—	Oct 1st	Nov 20th – Feb 28th
Zone 13a	—	Oct 1st	Nov 20th – Feb 28th
Zone 13b	—	Oct 1st	Nov 20th – Feb 28th

Crop Details

Trait	Value
Days to Maturity	50
Sun Requirements	Part Sun
Growth Habit	Rosette
Support Needed	None
Planting Depth	Surface
Germination Temp (°F)	70
Min Soil Temp (°F)	40
Min Night Temp (°F)	35
Harden Off (days)	5

Culinary Notes

Chef's Note

Cosmo Savoy’s tight head and tender, succulent bite make it a romaine that stays snappy instead of collapsing when dressed—its crinkled surface grabs just enough vinaigrette. Use it cold and assertive with acid and salty partners (lemon/Parmesan, or bacon/chicken) so the lettuce’s clean, fresh green flavor comes through.

Best Uses

ice-cold romaine wedges for a crisp, sturdy salad base
thin chiffonade in lettuce-forward bowls where texture matters
garnish for composed plates that need height and a clean bite

Flavor Profile

cool, mild leafy sweetness tender succulent crunch savoyed ruffle that holds vinaigrette fresh green, clean finish

Kitchen Pairings

lemon olive oil Parmesan chicken bacon garlic

Frequently Asked Questions

What pest or disease is most likely on Lactuca sativa (Cosmo Savoy), and how can I control it?

On leafy Lactuca sativa, watch for aphids and powdery mildew, especially in warm, humid conditions. Spray affected plants with a strong jet of water to knock off aphids, then use insecticidal soap if they persist, and improve airflow by spacing heads/rows so leaves dry quickly. If powdery mildew appears, remove the most infected leaves and avoid overhead watering to slow spread.

How often should I water Cosmo Savoy during its main growing phase?

Keep the soil consistently moist during the 35–50 day growth window, aiming for evenly damp (not soggy) conditions. Water when the top 1 inch of soil feels dry; in hot part-sun spots this often means about 1–2 times per week, but increase frequency if leaves wilt in the afternoon. Because Lactuca sativa is shallow-rooted, avoid long dry spells followed by heavy watering.

How do I tell when Cosmo Savoy is ready to harvest?

Harvest when the rosette is fully sized and the outer leaves are crisp and well-colored, typically around 50 days from sowing. For leaf harvest, pick outer leaves anytime once they’re large enough to eat, but for best texture wait until plants are near full size so the heart is formed. If plants start to bolt (flower stalk), harvest promptly for best flavor.