White Boston

Family: Asteraceae Leafy Green

Planting Schedule

Provide your location or planting zone to unlock dates and add White Boston to a garden.

Crisp at first touch, White Boston forms a lush, pale-green butterhead that feels velvety and cool against the palate—its tender leaves fold into a softly layered rosette.

Mild, sweet flavor with a buttery texture makes it a standout for fresh salads and elegant sandwich-style gatherings, while its gentle leaves also shine in light, quick tosses and refreshing pickled accents. With about 55 days to maturity, it’s a satisfying cool-season choice for gardeners who love a classic, garden-fresh head that stays pleasantly tender.

Light: Part SunMaturity: 55 DaysHabit: Rosette

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White Boston 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 4th	May 25th	Jul 19th – Aug 1st
Zone 2a	Apr 27th	May 18th	Jul 12th – Aug 29th
Zone 2b	Apr 17th	May 8th	Jul 2nd – Aug 25th
Zone 3a	Apr 17th	May 8th	Jul 2nd – Sep 1st
Zone 3b	Apr 21st	May 12th	Jul 6th – Sep 21st
Zone 4a	Apr 17th	May 8th	Jul 2nd – Sep 24th
Zone 4b	Apr 15th	May 6th	Jun 30th – Sep 27th
Zone 5a	Apr 10th	May 1st	Jun 25th – Sep 30th
Zone 5b	Apr 6th	Apr 27th	Jun 21st – Oct 5th
Zone 6a	Apr 3rd	Apr 24th	Jun 18th – Oct 10th
Zone 6b	Mar 28th	Apr 18th	Jun 12th – Oct 16th
Zone 7a	Mar 23rd	Apr 13th	Jun 7th – Oct 20th
Zone 7b	Mar 13th	Apr 3rd	May 28th – Oct 28th
Zone 8a	Mar 4th	Mar 25th	May 19th – Nov 5th
Zone 8b	Feb 23rd	Mar 16th	May 10th – Nov 12th
Zone 9a	Feb 6th	Feb 27th	Apr 23rd – Nov 26th
Zone 9b	Jan 12th	Feb 2nd	Mar 29th – Dec 9th
Zone 10a	—	Oct 1st	Nov 25th – Feb 28th
Zone 10b	—	Oct 1st	Nov 25th – Feb 28th
Zone 11a	—	Oct 1st	Nov 25th – Feb 28th
Zone 11b	—	Oct 1st	Nov 25th – Feb 28th
Zone 12a	—	Oct 1st	Nov 25th – Feb 28th
Zone 12b	—	Oct 1st	Nov 25th – Feb 28th
Zone 13a	—	Oct 1st	Nov 25th – Feb 28th
Zone 13b	—	Oct 1st	Nov 25th – Feb 28th

Crop Details

Trait	Value
Days to Maturity	55
Sun Requirements	Part Sun
Growth Habit	Rosette
Support Needed	None
Planting Depth	Surface
Germination Temp (°F)	40
Min Soil Temp (°F)	40
Min Night Temp (°F)	32
Harden Off (days)	5

Culinary Notes

Chef's Note

White Boston’s butterhead softness and mild sweetness make it a dream for cold, clean flavors—dress it lightly and it stays elegant, not soggy. It’s also sturdy enough for stacked sandwich duty, where its gentle crunch won’t immediately go limp under weight and moisture.

Best Uses

ice-cold salad base that holds vinaigrette without turning watery
butter-slick sandwich lettuce—layer it thickly so it doesn’t collapse into bread
quick tosses with warm elements, using minimal heat to keep the leaves supple
light pickling accents where the mildness stays pleasant rather than sharp

Flavor Profile

mild, sweet lettuce flavor buttery, tender leaf texture cool, faintly grassy freshness snappy crunch when handled gently

Kitchen Pairings

lemon extra-virgin olive oil balsamic vinegar goat cheese bacon grilled chicken

Frequently Asked Questions

What pest or disease most often affects Lactuca sativa (White Boston lettuce), and how do I control it?

The most common issue is lettuce downy mildew (often shows as yellow patches on upper leaves with fuzzy gray-violet growth on the undersides). Improve airflow and avoid wetting the leaves, then remove and discard badly infected plants; you can also treat early by spraying a labeled fungicide that targets downy mildew for edible greens. If slugs show up, use an evening slug check and hand-remove or use a bait product labeled for use around vegetables to protect tender heads.

How frequently should I water White Boston lettuce during peak growth, and what soil moisture level should I maintain?

During the main head-forming phase, keep soil consistently evenly moist—aim for the top 1 inch to stay damp, not waterlogged. Water about 2–3 times per week depending on heat and your soil, and increase frequency during hot spells to prevent bitter, loose heads from forming. Mulch lightly after seedlings establish to reduce surface drying, which helps prevent stress-induced bolting.

How can I tell when White Boston lettuce (Lactuca sativa) is ready to harvest?

Harvest when heads are firm and well-formed, typically around 55 days from sowing (or when they reach the expected size for your bed rows). Use your hand to gently press the head—if it feels tight rather than soft and airy, it’s ready. If leaves are still easily separated at the base or the plant is stretching upward, wait a few more days unless temperatures are pushing bolting.