Although most pumpkins and winter squash are not yet ready to harvest. It is important to keep a close eye on the developing fruit. Many different kinds of fungal pathogens can rot winter squash and pumpkins before they are ripe. There are a few things that a gardener can do to prevent wide spread loss.
Weed the pumpkin patch! Weeds crowd growing fruit and create a moist shaded environment that fungal pathogens thrive in. Removing weeds from the garden allows better air flow around the developing fruit. This way the new pumpkins and squash will dry out quickly after rain or irrigation.
Remove any infected squash from the garden. Many fungal fruit rot diseases are easily splashed from one fruit to another on rain or irrigation. If one fruit is infected, the rotted area or the spots on the fruit will produce spores from now until harvest. If left in the garden, the disease will continue to spread to other developing squash and pumpkins. Infected fruit can be thrown in the compost pile if it heats up or take it to a municipal compost site.