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Winter Squash variety

Tetsukabuto Winter Squash: Days to Maturity, Growth Habit & Growing Tips

Tetsukabuto, sold in some catalogs as Japanese Pumpkin, is an interspecific hybrid between Cucurbita maxima and C.

Key facts

Days to maturity
91 days
Growth habit
Vining
Listed for
United States

Overview

Tetsukabuto, sold in some catalogs as Japanese Pumpkin, is an interspecific hybrid between Cucurbita maxima and C. moschata, and that cross gives it unusual vigor: the vines shrug off vine borers and powdery mildew better than either parent and yield heavily even under stress. Fruit is nearly round, 4 to 6 pounds, with dark mottled green-black skin, a small blossom-end scar and deep yellow-orange flesh that is dry, dense and nutty, closer to a good kabocha than a butternut. Sow an inch deep after frost and space hills 6 to 8 feet apart for the long vines. Cure a week in warmth; well-stored fruit can last into the following spring. Note that as a maxima x moschata cross it needs another squash nearby for pollination.

Tetsukabuto traits

  • Hybrid of C. maxima and C. moschata
  • Nearly round 4-6 lb fruit with dark green-black skin
  • Deep yellow-orange flesh, dry, dense and nutty
  • Strong tolerance of vine borers and powdery mildew
  • Very vigorous vines needing 6-8 ft between hills
  • Exceptional keeper, often to spring

Good for

  • Roasting and tempura
  • Soups
  • Long storage

Compare with other winter squash varieties

Blank cells mean there is no data on record. Select a variety name to open its page.

VarietyDays to maturityGrowth habitType
Tetsukabuto this page91 daysVining—
Anna Swartz90–100 daysVining—
Australian Butter90–100 daysVining—
Avalon90 daysVining—
Blue Prince F190 daysVining—
Buttercup90 daysVining—
Frisco Butternut90 daysVining—

Tetsukabuto FAQ

What kind of winter squash is Tetsukabuto?

Tetsukabuto, sold in some catalogs as Japanese Pumpkin, is an interspecific hybrid between Cucurbita maxima and C. moschata, and that cross gives it unusual vigor: the vines shrug off vine borers and powdery mildew better than either parent and yield heavily even under stress.

How many days to maturity is Tetsukabuto?

Tetsukabuto is listed at 91 days. Sowing and planting times are the same as for other winter squash varieties, so check them in the winter squash growing guide.

How does Tetsukabuto compare with other winter squash varieties?

Tetsukabuto: 91 days, vining. Similar winter squash varieties include Anna Swartz (90–100 days), Australian Butter (90–100 days), Avalon (90 days). The comparison table on this page lists days to maturity, growth habit and type side by side.

What is Tetsukabuto good for?

Tetsukabuto is grown for roasting and tempura, soups, long storage.

Sowing, care and common problems

Sowing times, care and common problems are the same for every winter squash variety, so they are covered once in the growing guide.

Source

Source: Cornell University (CALS Garden-Based Learning)

The text on this page is our own summary written from the published variety record, not a copy of it.

Keep a growing history for Tetsukabuto

Type the plant name, add the planting date, and take photos as it grows. Next season you will have your own dates for sowing, flowering, and harvest instead of a generic calendar.

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