All plants, flowers included, need water to exist but how long can flowers go without water, depending on the species and conditions.AAll plants, flowers included, need water to exist but how long can flowers go without water, depending on the species and conditions.All plants, flowers included, need water to exist but how long can flowers go without water, depending on the species and conditions.ll plants, flowers included, need water to exist but how long can flowers go without water, depending on the species and conditions.All plants, flowers included, need water to exist but how long can flowers go without water, depending on the species and conditions.