Planting pumpkins?

so i want to plant some pumpkins however i began to and was told to stop because it would interfere with the growth of my new tree i planted near it. is this true? will the pumpkins take nutrients away from the tree? also can the roots of the pumpkins interfere with a pipe nearby? I know nothing of pumpkins, so some help would be greatly appreciated. One last question, how do you prepare the soil beforehand? do you need to clear the area of grass and weeds, or can you just dig a hole and plant the seed? Thank you!

Planting pumpkins?
Pumpkins are annuals with shallow weak roots - they will not interfere with the tree or the pipe. The shade or water needs of the tree might interfere with the pumpkins, though. Pumpkins, like other vegetables, like sun and they do not like to compete with weeds and grass, so you should clear and area, work compost and fertilizer into the soil, and add the pumpkins to that area with a little mulch afterwards to hold moisture.