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in the fall so your tree can adapt and grow strong. If you plant in the fall, your trees will have adequate time to develop their root system and get stronger over the colder months. High temperatures and direct sunlight can harm your trees and make it hard to root into the soil.  Both sweet and tart cherries grow the strongest if they are planted in the fall. If you decide to plant your cherry tree in the spring, be sure to water it well throughout the spring, summer, and fall. before you plant your trees. Remove weeds and mix in well-rotted compost material to fertilize your soil. Leaves and tree trimmings work well as raw composting materials. Always use well-drained soil to avoid waterlogging your tree. You can improve your soil's drainage by building raised beds or adding more rotting organic matter to existing soil. Your pH level will vary depending on soil type and climate conditions. Test your pH level by purchasing a basic soil test kit from a home or garden supply store. Take 3-5 samples with your kit, and follow particular instructions listed on your kit. Your kit will inform you of any nutrient deficiencies. You can add sulfur to increase acidity or add lime to reduce acidity. Both sweet and tart cherries need ample sunlight in order to grow to full size. Sweet cherries in particular need as much sunlight as possible, while tart cherries can grow without quite as much sun. Full sun exposure will also help prevent pests and diseases.  For example, plant your trees on top of hills that face the morning sun. Avoid placing your cherries near other trees or buildings that cast shade. Make sure your trees have enough room to root down and grow healthy. If you plant your trees too close together, your trees will compete for sunlight and nutrients from the soil.  For sweet cherries, space dwarf trees 5–10 feet (1.5–3.0 m) apart and adult trees 35–40 feet (11–12 m) For tart cherries, space dwarf trees 8–10 feet (2.4–3.0 m) and adults 20–25 feet (6.1–7.6 m)

Summary:
Plant your tree Prepare your soil Maintain your soil's pH level at around 6.5, slightly acidic. Plant your tree in an elevated, sunny spot. Space your cherry trees an appropriate distance apart.