Symbolically, the pumpkin is looked at as a symbol that connects rebirth and fertility. Pumpkins also symbolise harvests and crops because they come in the season when Halloween falls every year. For example, for one who wants to go 'trick or treating', a lit-up pumpkin on the stairs denotes that the person who lives there wants a visit. Likewise, there are many rituals and practices like this you try while celebrating Halloween at home.