Weeping willow trees (Salix spp.) can reach heights between 45 and 75 feet, according to the Southern Group of State Foresters. These trees have unique foliage that droops down from the branches, forming a canopy. Caring for a weeping willow is easy as long as it's planted near a water source. If not, you'll need to water a weeping willow often.
Plant your weeping willow where it will have plenty of space to grow. The spot should have full or partial sun; if not, you should consider relocating it.
Water your weeping willow more frequently during the dry summer months. Pay attention to its leaves for a good indication of how often to water. If any of them begin to turn yellow, that's a sign to increase your watering habits.
Add fertilizer to the soil around your weeping willow once or twice a year; weeping willow trees don't require much more than that. Fast Growing Trees Nursery recommends using a 20-20-20 fertilizer.
Mulch 3 feet around the base of the weeping willow tree. This will keep weeds from growing and robbing your tree of water.
Keep an eye out for worms or tiny insects. If you find any on your weeping willow, sprinkle Sevin dust on them.
Watch for diseases common to weeping willows. Willow scab and willow blight can be treated with a fungicide. If your weeping willow comes down with crown gall, you will need to use a bactericide.