'Ulu or the breadfruit, was used for three things by Hawaiians, and we'll also tell you what are some parts of the plant that were useful.
The male flowers, if you make it into a dye, would be a tan color. Older male flowers make a brown dye.
Dried, thickened sap from the breadfruit was used to make a remedy or a cure for certain skin diseases.
Gum was made from the solidified milky sap. The sap could also be used as a glue. The glue could join two gourds together to form a drum. With the glue, they could also catch birds for their feathers to make a cape for a high ali'i. The feathers could also be used for decoration and clothings.
The fruit would be baked in an imu or an underground oven, to be made into poi, or pudding. This is high in starch and vitamin B. If pigs eat it, it'll make the pig fatter before the Hawaiians either cook it to make kalua pig or just let it become fat.
The wood would be used to make drums or pahus, poi-pounding boards, for woodwork in houses and canoe bows. The wood was used to make surfboards, because it was so light.
Sheath of Male Flower
The covering of the male flower is the sheaths. The sheath of the flower was used as sandpaper to smooth utensils, and it would be used to polish bowls and kukui nuts.