Kabocha squash grow and care – herbaceous creeping vine of the genus Cucurbita also known as Kabocha or Japanese pumpkin, Kabocha squash annual plant also used as ornamental fruit, can grow in mediterranean, subtropics, temperate or tropics climate and growing in hardiness zone 4+, need to take care that there is enough hot days in order to bear fruits.
Leaves color green in round or heart shape with lobes.
Flower color is yellow, there are female and male flower.
Kabocha squash fruits
Fruits color dark green some can be with light green or orange, the shape round-top shape, weight is 1-3.5 Kg, and size 10-18 cm.
Mulch keep the moist of the soil and also protect the fruits
How to care: watering on the ground and not watering on the leaves or the fruits, the vine species need trellising
What is the best way to start growing? Seedling / Seed (explanation bellow)
Is it necessary to graft or use vegetative reproduction? No, possible to graft for better base that will be resistant for virus
Difficulties or problems when growing: Attacked easily, when the plant attacked in the base if not treat well it will die
Planting season – when to plant: Spring to summer, but better in the spring and in hardiness zone 4-7 need to start in the middle of the winter indoor, the plant need enough hot days when mature to bear fruits without, if the plant won’t be with mature fruits in the autumn or the plant won’t bear fruits or the fruits will die before fully ripen, also better to choose cultivar that bear the fruits faster.
Pests and diseases: Powdery mildew, aphids, moth, virus, beetles
Pruning season: No need. But possible all the season
How to prune: Infected leaves needed to take out, also try to clean them
Size of the plant: 0.5-1.5 m, 20-60 inches
Growth speed in optimal condition: Fast growing
Water requirement: Average amount of water
Light conditions in optimal condition for growing: Full Sun
Is it possible to grow indoor as houseplant? No
Growing is also possible in a planter /flowerpot / containers: Yes
Bloom season: Late spring
General information about the flower Yellow flower with five lobs, there are female and male flowers
Thinning the bloom: Sometimes happened because disease or not enough water, or need hand pollination
Pollination is done by: Bees and more pollinators, by hand
Fruit harvest season: Summer
Fruits pests or diseases: Powdery mildew
What can be done with big quantities of Kabocha squash fruits? Cooked, baked, grilled, stir fry, stuffed
Work requirements on the fruit: Sometimes need to keep it with space from the ground
How long does it take to bear fruit? 100-120 days (3-5 month)
Gow to grow Kabocha squash from seeds: Sowing requirement: Easy to sow no special treatment, sowing temperature better to sow in 21-25C (70-77F)
Saving seeds until sowing: Room temperature, dry place
Spring (but in warm weather possible in the summer) and in cold climate start in the winter indoor
How to plant: Better to plant it in light soil that will be well ventilated and keep the moist like vermiculite
Planting spacing: 20*30 cm (8*12 inches)
Depth of Sowing: 1-2cm (0.5-1 inch) from the top
Conditions for seeds germinate: Moist soil, full sun
Watering requires for Seeds: Average amount of water
Germination time: 5-20 days
Condition of seedling: Warm weather, big amount of water, full sun, place to trellising