Butternut squash
Also known as
Calabaza, Ayote, Butternut pumpkin, Neck pumpkin, Long Island Cheese Pumpkin, Tahitian melon squash, Tromboncino
Keep this plant’s care guide close at hand.
Get the appAbout Butternut squash
Cucurbita moschata is a warm-season, vining species in the squash family famed for butternut-type fruits and many regional landraces called calabaza or ayote. Native to Mesoamerica and the Caribbean basin, it thrives in heat and humidity better than other squashes and shows notable tolerance to pests such as squash vine borer. Plants form long, rambling vines with tendrils, large lobed leaves, and separate male and female trumpet-shaped flowers that rely on bees for pollination. Fruits vary widely in shape and size, though the classic butternut form has a tan rind and dense, deep-orange flesh rich in beta-carotene and sugars, making it excellent for roasting, soups, and storage. Seeds (pepitas) are edible and nutrient-dense. Compared to related species, C. moschata typically stores longer and resists many foliar diseases in warm climates, provided good airflow. It is a heavy feeder that responds to fertile, well-drained soils and consistent moisture. Maturity ranges from 90–120 days, with fruits ready when rinds harden and peduncles cork.
Taxonomy
Properties & Requirements
How to care for Butternut squash
Water
Provide 25–40 mm of water weekly, more in heat or sandy soils. Water deeply at the base once or twice per week rather than frequent light sprinklings; early morning is best. Keep soil evenly moist from vining through fruit set, then taper slightly as fruits mature to improve storage quality. Use drip or soaker hoses and 5–8 cm of organic mulch to reduce evaporation and leaf wetting, which limits foliar diseases.
Light
Requires full sun: at least 8 hours of direct light daily, ideally 10–12 hours in cooler regions for reliable ripening. In very hot climates, light afternoon shade can reduce heat stress and sunscald on fruit. Avoid shaded sites; insufficient light leads to rampant vines with few fruits and greater disease pressure. Space plants to open the canopy and orient rows north–south to maximize light interception and airflow.
Nutrients
Work 5–8 cm of compost or well-rotted manure into the bed before planting. At 3–4 true leaves, side-dress with a balanced fertilizer (e.g., 10-10-10) at 20–30 g per plant, then shift to a low-N, higher K and P feed (e.g., 5-10-10) at vining and again at early fruit set. Maintain micronutrients (especially Mg and B) and pH near 6.5. Avoid excess nitrogen after flowering to prevent lush vines with poor fruiting.
Temperature
Frost-sensitive. Plant when danger of frost has passed and soil is above 15°C (best 18–32°C). Optimal daytime temperatures are 24–30°C with nights above 10–12°C. Growth slows below 15°C and heat above 35°C can reduce fruit set, though C. moschata tolerates heat and humidity well if adequately watered. Protect seedlings from cold snaps with row covers or cloches. Harvest before the first frost; cure and store fruits at 10–15°C and 50–70% relative humidity.
