So an obvious reason for drooping heads is simply top-heavy sunflowers. Another possibility for drooping sunflowers is that the plants need water. An indicator of this is leaves that are wilted as well. Sunflowers, in general, can withstand some drought.Click to see full answer. Likewise, people ask, how do you revive a dying sunflower?Avoid overwatering and rot by dumping the excess water that collects in the pot’s drainage dish, and water the soil only when it feels dry when you touch it. Fertilize the sunflower if its lower leaves begin to yellow and drop and you have not been fertilizing it.Secondly, can you over water sunflowers? It may not rain, but the occasional day without water will not harm your sunflower – whereas overwatering might. If the base of the stem starts to see signs of browning or rotting, then you’re overwatering, allow it to dry out to try and save it. Once fully grown, avoid watering the head once it has turned brown. Hereof, how do I get my Sunflowers to open up? How to Get Flowers to Open Faster Overview. Remove the cut flowers from their current vase or packaging. Cut the stems at an angle. Strip away any leaves on the stem below the water level of your vase. Place a diffuser on the end of a blow dryer. Place the flowers in a bright sunny location. Tips. Warnings. Can you bring sunflowers back to life?Keep your sunflowers fresh longer by recutting stems and putting them in fresh holding solution every two days. Cut the stems under water to prevent air bubbles from entering the stem’s vascular system. Keep the stems in water while you empty the vase, clean it and add fresh holding solution.