When you and I were popping firecrackers on July 4, the pumpkin growers of Texas were planting pumpkin seeds. These harbingers of fall take 100 days to mature, so you have to think ahead — way ahead — to have them for Halloween celebrations. Pumpkins are members of the gourd family, which incudes cucumbers, melons, cantaloupe, watermelons and zucchini. What do members of the gourd family have in common? They need plenty of space.