By Nik Crawley, founder of GardenTrack · Updated July 22, 2026
✓ In your garden
Buttercrunch is the forgiving beginner's butterhead — a loose, open rosette of thick, deep-green leaves cupped around a small, sweet, buttery heart. Bred at Cornell and an All-America Selections winner back in 1963, it earns its reputation by being hard to mess up and staying sweet a couple of weeks longer than most butterheads into warm weather. The honest catches: it never forms a firm ball, and 'heat-tolerant' is relative — it still bolts and turns bitter once real summer heat sets in.
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a Buttercrunch plant in the garden — a low, open rosette of thick, deep-green spoon-shaped butterhead leaves spreading around a paler heart, with faint brown tipburn on a few leaf edges · Photo: Geo Lightspeed7
(CC BY-SA 4.0, via Wikimedia Commons)
· source
ButterheadBeginner-proofSweet & buttery
“The forgiving beginner's butterhead — a loose green rosette hiding a small sweet buttery heart, and it holds sweet a couple weeks longer than most butterheads before heat wins.”
Days to maturity50–65 days~45–50 from transplant; baby leaf ~28
TypeButterhead (Bibb)loose head + buttery heart
Habitlow open rosetteabout 6–8 in tall and wide
Best seasonspring & fallcool-season; bolts in summer heat
Beginner-friendlinessForgiving 5/5
Germinates readily, shrugs off stress better than most butterheads, and is hard to actually kill — the reason it's the lettuce most often handed to first-time growers, un-patented and everywhere since 1963.
FlavorSweet & buttery 5/5
Mild, sweet, and buttery with almost no bitterness when grown cool; the blanched inner heart is the sweetest, tenderest part of the plant.
Heat toleranceRelative 3/5
It holds sweet later into warm weather than most butterheads, but 'heat-tolerant' is relative — it still bolts and turns bitter once days sit above ~75–80°F. It buys you a couple of weeks, not a summer.
Disease & tipburnIts weak spot 2/5
Colorado State's trial was blunt: Buttercrunch held over 90 days before bolting but was the most disease-prone of the butterheads tested and ran slightly above average for tipburn. The bolt-holding edge comes with a cost.
Sweet and beginner-proof — you pay for it a little on disease and in real heat.
SweetButteryMildTender
✓ Sweet, buttery, and hard to fail~ It's a loose rosette, not a firm ball✗ Not a summer lettuce — bolts in heat
Numbers from university growing guides. Ratings are our take, judged against all lettuces. Tap a meter to see why.
Growing basics — shared by every head lettuce
Buttercrunch Lettuce grows like any other head lettuce. The full picture — how deep to plant, spacing, feeding, pests, harvest — lives on the Head Lettuce page so it's maintained in one place.
Greenhouse or cover on: your start slides ~4 weeks earlier and your harvest stretches ~3 weeks later (shown striped).
Planting seeds straight in the ground only works where the season's long and warm — most gardeners start seeds indoors or buy young plants, or you'd pick your first tomato right as frost hits.
Comfortable — first ripe fruit lands around early Jun, well before your typical frost (~late Oct).
Start seeds indoors
early Mar – mid Mar
Toughen up outside
early Apr – mid Apr
Move plants outside
mid Apr – mid Apr
Plant seeds outside
mid Mar – early Apr
Growing
mid Apr – early Jun
Picking
early Jun until frost (~late Oct)
Typical dates for zone 6b — set your zone or ZIP above for yours.
What to plant near Buttercrunch Lettuce — and what to keep away
✓ Good neighbors
CarrotsPractical
Quick lettuce fills the row while slow carrots take their time.
TomatoPractical
A tall tomato throws exactly the shade lettuce wants once summer heat makes it flower and turn bitter (bolt).
Onions & garlicTraditional
On the classic charts — lettuce's own row lists onions.
✗ Keep apart
The badge is the honesty.Trialed = a published field trial · Practical = a real mechanism · Traditional = companion-chart lore. These pairings hold for every head lettuce.
Pairings compiled from West Virginia University Extension.
Growing Buttercrunch Lettuce — the things that trip people up
Grow it in the cool of spring and fall. Surface-sow or barely cover the seed (lettuce needs light to sprout), keep it evenly moist, and thin to 6–10 inches for full heads. Succession-sow every 2–3 weeks for a steady supply.
Manage your expectations on the 'head': Buttercrunch forms a loose, open rosette with a small buttery heart inside — not a firm iceberg ball. That's the variety working as designed, not a failure.
It's the beginner's lettuce for a reason — forgiving and sweet — but eat it fresh. The tender leaves bruise and wilt fast, which is exactly why you find it in gardens and not on a supermarket shelf. Set your zone on the [lettuce page](/plants/lettuce-head/) to pin your sow and harvest dates.
From university growing guides (see Sources).
Where Buttercrunch comes from
Buttercrunch was bred by George Raleigh in the vegetable-crops program at Cornell University and named an All-America Selections winner in 1963. It's a Bibb-type butterhead, selected specifically to hold up better under heat and stress than the standard Bibb it improved on.
Because it's open-pollinated and un-patented, gardeners have saved and re-sold its seed for more than sixty years — which is a big part of why it's now one of the most widely available lettuces in the country, and usually the first one recommended to a beginner.
It's a rosette, not a ball
Here's the thing to know before you plant it: Buttercrunch does not form a firm, heavy head like iceberg. It makes a low, open rosette — a spread of thick, cup-shaped outer leaves around a small, blanched, creamy-yellow heart at the center. New growers expecting a tight ball sometimes think it 'failed.' It didn't. That loose rosette with a buttery heart is the variety doing exactly what it's bred to do.
That heart is the payoff: shielded from the sun by the outer leaves, it turns pale, tender, and the sweetest part of the plant. And the naturally cup-shaped outer leaves peel off whole, which is why it reads instantly as a butterhead in the garden — and why it makes such good lettuce wraps.
'Heat-tolerant,' with an asterisk
Buttercrunch's headline trait is that it resists bolting better than most butterheads — and that part is true. In a Colorado State University trial it held over 90 days before shooting to seed, near the top of the butterheads tested.
But 'heat-tolerant' is relative, not magic. Sustained days above roughly 75–80°F still push it to bolt, and once it bolts the leaves turn bitter fast. It buys you a couple of extra weeks, not a whole summer. And that same CSU trial is honest about the cost: Buttercrunch was the most disease-prone of the butterheads it tested and ran slightly above average for tipburn. Grow it as a cool-season crop and lean on that bolt resistance to stretch the shoulders of the season — not to carry it through July.
Growing Buttercrunch
It's a cool-season crop that germinates best between about 40 and 75°F and germinates poorly once the soil climbs past ~80°F. Direct-sow or transplant in early spring and again for fall. Sow shallow — barely cover the seed, since lettuce needs light to sprout — and keep the surface moist for the shallow roots.
Thin to 6–10 inches apart for full heads, and succession-sow every 2–3 weeks through spring and fall for a steady supply. In warm climates, an afternoon-shade spot stretches the season. Harvest in the morning when the leaves are crispest — either pick outer leaves cut-and-come-again, or cut the whole rosette at the base once the buttery heart fills in.
What goes wrong — and the fixes
Bolting and bitterness. Sustained heat above ~75–80°F sends it to seed and turns it bitter. Fix: sow for spring and fall, give afternoon shade in warm zones, keep the soil evenly moist, and harvest before a heat wave.
Tipburn — brown, scorched inner-leaf edges. It's a calcium-movement disorder driven by moisture swings and fast growth, and CSU flagged Buttercrunch as slightly above average for it. Fix: keep moisture consistent and feed moderately.
Disease in wet, crowded beds — bottom rot, gray mold, and lettuce drop. Buttercrunch is the most disease-prone butterhead in trials, so give it room. Fix: space plants for airflow, water at the base rather than overhead, and avoid soggy soil. Slugs and aphids love the low rosette too — bait for slugs and hose off aphids.
In the kitchen
Buttercrunch is a soft, sweet, tender lettuce, so it shines wherever you want a pliable leaf. Its best trick is the lettuce wrap or cup: the naturally cup-shaped leaves peel off whole and fold around a filling without cracking. It's also a lovely, folding sandwich and burger leaf that won't shatter like a crisphead.
The one honest limitation is shelf life. Those thin, tender leaves bruise and wilt quickly after cutting — great flavor, poor keeping. Cut it in the cool of the morning, chill it right away, and plan to eat it within a day or two rather than storing it like a firm head.
Buttercrunch Lettuce head lettuce at a glance
Buttercrunch Lettuce Head Lettuce — at a glance
Type
Butterhead
Days to ripe
50 days after you plant it outside
Color
Green
Extra fields from seed-catalog listings and university growing guides. Days to ripe and disease resistance shift with your climate and seed source — double-check with your local extension office before you buy.
Watch: growing Buttercrunch Lettuce
Growing Greens: How to Harvest Buttercrunch Lettuce · homesteady
Embedded from their creators on YouTube — full credit and views go to the channel.
Add Buttercrunch Lettuce to your garden
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Common questions about Buttercrunch Lettuce
Is Buttercrunch lettuce good for beginners?
Yes — it's one of the most forgiving lettuces you can grow. It germinates readily, tolerates stress better than most butterheads, and stays sweet with almost no bitterness in cool weather. It's the variety most often handed to first-time gardeners.
Why doesn't my Buttercrunch form a solid head?
Because it isn't supposed to. Buttercrunch is a butterhead — it forms a loose, open rosette with a small blanched, buttery heart inside, not a firm iceberg-style ball. The loose rosette is the variety working as designed, not a failure.
Is Buttercrunch really heat-tolerant?
Relatively. It resists bolting better than most butterheads — a Colorado State trial had it holding over 90 days — but it still bolts and turns bitter once days sit above about 75–80°F. Treat it as a cool-season spring and fall crop; the heat tolerance buys you a couple of weeks, not a summer.
How do you harvest Buttercrunch lettuce?
Two ways. Pick the outer leaves as you need them (cut-and-come-again) for a longer picking window, or cut the whole rosette at the base once the buttery heart has filled in. Harvest in the morning when the leaves are crispest, and eat it fresh — it wilts fast.
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