This variety is renowned for its exceptionally sweet, dense flesh and outstanding flavor. It is considered one of the finest winter squash varieties for cooking and long-term storage.
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Vegetable
Cucurbitaceae
Semences biologiques de courges d’hiver
Organic Buttercup Squash
Cucurbita maxima 'Buttercup'
Buttercup Winter Squash is a classic winter squash prized for its exceptional flavor and long storage life. It produces compact fruits with dense, richly flavored flesh.
Quantity
About 25 seeds
Exposure
Full sun
Difficulty level
Moderate
Discover the plant
Family
Cucurbitaceae
Genus
Cucurbita
Species
maxima
Cultivar
Buttercup
Type
Vegetable
Cycle
Annual
Organic Buttercup Squash (Cucurbita maxima ‘Buttercup’) is a winter squash prized for its compact dark green fruits, dense sweet flesh, and rich, nutty flavor. This vigorous annual plant develops long trailing vines that quickly cover the soil and create a generous food-producing presence in the vegetable garden. In summer, its large yellow flowers attract bees, bumblebees, and other pollinators, which are essential for well-developed fruit. Harvested at full maturity, when the rind is hard and the stem is dry, it offers excellent culinary quality and very good winter storage.
This squash grows best in full sun and deep, cool, well-drained soil rich in organic matter. Direct sow from May through June once the soil has thoroughly warmed and all danger of frost has passed. It needs plenty of space for its trailing vines to develop properly. Deep, regular watering supports even fruit growth, while mulch helps conserve moisture and suppress weeds. A generous application of compost or well-rotted manure encourages abundant, flavorful harvests.
Ideal for large vegetable gardens, food gardens, and self-sufficiency projects, Organic Buttercup Squash extends the harvest well beyond the growing season. Its velvety, sweet flesh is excellent in soups, purées, gratins, roasted dishes, stuffed recipes, desserts, and comforting autumn meals. After a short curing period, the fruits store for several months in a cool, dry location. Its abundant flowering supports pollinators, while its lush foliage covers the soil and contributes to a lively, productive, generous garden.
Planting guide
From planting to establishment.
Planting depth
2.5 cm (1 in)
Establishment temperature
21 to 30 °C (70 to 86 °F)
Establishment time
7 to 14 days
Best planting time
May to June
Propagation
Propagated by seed. Seeds may be collected from fully mature fruits when proper isolation distances are maintained.
Growing method
Direct sow once the soil has thoroughly warmed and all danger of frost has passed. Plant the seeds about 2.5 cm (1 in) deep in rich, cool, well-drained soil. Choose a full-sun location to encourage vigorous growth and excellent fruit production. Water regularly without overwatering and apply mulch to conserve soil moisture. The long trailing vines require generous growing space. Harvest fruits at full maturity once the rind becomes hard and the stem begins to dry.
Soil and care
The right conditions.
Exposure
Full sun
Soil pH
Slightly acidic to neutral
Minimum temperature
10°C (50°F)
Watering
Winter squash requires deep, regular watering to maintain even growth. Insufficient moisture can reduce fruit size and overall quality.
Soil type
This variety prefers rich, cool, deep, well-drained soil high in organic matter. Fertile soil promotes vigorous growth and exceptional fruit quality.
Fertilization
Buttercup Squash thrives in very fertile soil enriched with compost or well-rotted manure. A balanced organic fertilizer encourages vigorous growth and abundant fruit production.
Seasonal care
Water regularly during dry periods to support fruit development. Add compost early in the season to maintain soil fertility. Apply generous mulch to conserve moisture and suppress weeds. Monitor for foliar diseases and maintain good air circulation around the vines. Harvest fruits before the first hard autumn frosts.
Container growing
A controlled environment.
Recommended pot size
60 to 80 cm (24 to 32 in)
Buttercup Winter Squash can be grown in a very large container, but it performs best in spacious vegetable gardens. Use a deep container filled with compost-rich growing mix and water consistently throughout the season. Its long trailing vines require plenty of room to develop properly. Container growing is possible for urban gardeners with a very sunny location.
Bloom and dimensions
The complete profile.
Flower color
Yellow
Foliage color
Green
Foliage type
Deciduous
Growth rate
Vigorous
Bloom period
Large yellow flowers bloom throughout summer and attract abundant pollinators. Good pollination is essential for producing well-developed fruits.
Fruiting
Long-storage fruits with dense, sweet flesh
Harvest
Harvest fruits about 90 days after sowing once the rind is hard and the color is fully developed. After a short curing period, they store for several months in a cool, dry place.
Garden associations
What to plant with it.
Good companions
Beetroot, celery, onion, potato, thyme
Avoid planting with
Fennel
Soups, purées, gratins, roasting, storage
From the garden to inspiration.
Buttercup Winter Squash is prized for its dense, sweet, richly flavored flesh. It is excellent in soups, purées, gratins, roasted dishes, and comforting autumn recipes. Its velvety texture is also perfect for pies, muffins, stuffed squash, and baked desserts. The fruits store for several months after harvest, making them an outstanding winter storage vegetable.
Frequently asked questions
Everything toknow.
Fruits are generally ready about 90 days after sowing. Harvest when the rind is hard and the stem begins to dry naturally.
Yes. This variety has excellent storage qualities and, under proper conditions, can be kept for several months after harvest.
It is delicious roasted, mashed, in soups, gratins, or stuffed. Its rich, creamy flesh is perfect for a wide range of autumn and winter recipes.
Yes. These certified organic, open-pollinated seeds allow gardeners to grow sustainably and save seed when proper isolation practices are followed.
Its strengths, naturally.
Plants that attract butterflies
Butterflies
