Ash trees (Fraxinus excelsior) are broad-growing, deciduous trees that can grow to heights of 100 feet or more. Although not an indigenous tree to North America, ash trees are common sights among the woodland areas of Britain and other areas in Europe. Plant ash trees where they will be given ample room to grow and make sure to provide them with good draining soil.
Choose a planting location for the ash trees that is in full sun to partial shade. Keep in mind ash trees grow very tall, so choose a site well away from structures, power lines or other vegetation.
Dig planting holes for the ash trees that are spaced between 60 and 90 feet apart from each other. Dig each hole three times the width but the same depth of the root system, if you are planting bare-root ash trees. If planting container-raised ash trees, dig the holes three times the width of the containers and 1-and-1/2 times the depth.
Amend the soil that you extracted from the planting holes. Mix an equal amount of peat moss, aged compost or leaf mold into the soil if the soil in the planting area is sandy or light. Use perlite, coarse sand or wood chips if the soil is sticky and clay-like.
Tip the container on its side. Cut along the sides of the container, all the way to the bottom of the pot, using a pair of multi-purpose snips, if planting from a 5-gallon container. Use a hammer and give the rim of the container several hard strikes to loosen and remove the pot from the root system, if planting from a 1-gallon pot.
Plant an ash tree into one of the previously dug planting holes. The top of the root system should be sitting at, or just slightly above (about 1 inch) from the adjacent garden soil. Hold the ash tree level and straight in its planting hole while you scoop in soil to secure the tree in its planting hole. Pack the soil down around the root system using your foot or your hand. Scoop in more garden soil to fill the planting hole full with soil, tamping it down as you proceed.
Create a 3- to 4-inch high circular dam of dirt around each of the ash trees that is approximately 24 to 36 inches in diameter. This will help when watering so enough water will pool up in the dam so the water can reach down to the root system.