Planting shrubs/trees in fall
I've read somewhere that fall tree/shrub plantings tend to do better than spring and/or summer because of being able to become more established before the heat hits them. Is this true for hydrangea? Is this the best time to plant them?
I was trimming some of the wildness out of my yard yesterday and found an open spot that receives partial sunlight and thought it would be a beautiful place for a hydrangea. If I plant one now, subject to whether or not I can find one in a gallon or more size, how often should I water it?
I would also like to plant some perennial flowers, such as coreopsis and/or coneflower. Would this be an ideal time for that? I planted a new coneflower this summer and lost it to the heat even though I watered it, so I'm hoping to find the right time with the least trauma to plant.