There are few trees that can rival the beauty of the tricolor beech’s leaves. In spring and summer, its green, pink and white leaves attract the attention of neighbors and passersby. And in the fall, they turn a beautiful copper color that stands out amongst the other turning leaves. But only well-watered tricolors can sport such an envious display. Under or over-watered trees may suffer from wilted leaves or they may drop off altogether.
Create a 6 to 8 inch high water ring around the planting area of newly-planted tricolor beech saplings. A water ring is a raised area of soil that retains water. Extend the ring 1 or 2 inches past the tree's root ball and fill it whenever the top inch or so of soil feels dry. Leave the water ring up until the beech establishes itself and produces new growth. Since tricolors grow so slowly, this may take up to two years.
Give your established beech tree 10 gallons of water per inch of its trunk's diameter (take this measurement roughly 2 feet from the base of the tree) three times monthly, or whenever the top 4 inches of the soil are dry. A hose emits roughly 10 gallons of water every five minutes when run at medium rate.
Check your tricolor beech's soil more frequently during the hottest months of the year. This is when the soil dries out the most quickly. This, in turn, means that the tree's demand for water is the highest and you may need to water it more frequently.
Cut back your watering frequency between November and March. The tree is dormant during these months and only needs to be watered once or twice a month if the ground is not frozen.