Blooming trees are an important part of our domestic landscape, giving it substance as well as beauty. Planting a blooming tree requires more thought than planting a perennial or pots of annuals. A tree cannot be moved at will.
No matter what we plant in our garden we have to consider the site, sun or shade, and we have to consider the growth rate and the ultimate size of the plant. With a tree these considerations become even more important. We planted five ginkgo trees in our new Lawn Beds 16 years ago when we had five toddler grandsons belonging to our three daughters. The trees were a nod to our years in Beijing, and pleasing to me because of the unusual fan shape of the foliage which turns a beautiful shade of yellow in the fall.
Ginkgo trees are dioecious which means they need male and female trees to fruit. We did not know whether we had male or female trees so we couldn’t be sure they would fruit or not. Male ginkgoes are more desirable because they will never fruit, and the fruits are famous for their bad smell. We didn’t worry about this because even if we had male and female trees they would probably not mature and fruit for many years – when we would no longer be around. We might seem thoughtless, but it is my position that we can see only so far ahead into the future, and in the case of plants we can usually please ourselves. The only exception would be deliberately planting something invasive.
We had the room in our country garden to plant trees that would get fairly large. In a suburban yard or garden you will have to be more discriminating about which trees to plant. When I look at the dimensions of trees labeled ‘small’ they can still be larger than you might expect. For example, there are many crabapple varieties that range from 12 to 25 feet high with an equal spread. Donald Wyman crab, one of the ten most disease resistant, produces white flowers in spring and small red apples in the fall. Prairiefire is also highly disease resistant and has bright pink flowers in the spring. The foliage begins with a purplish shade, changes to bronzey green and finishes with a yellow/orange shade in the fall. Crabapples are wonderful trees, with beautiful spring bloom to please you and support pollinators, with small apples in the fall that you might use in the kitchen or that the birds will enjoy.
The pagoda dogwood, Cornus alternifolia, is a native dogwood that can reach a height of 25 feet with an equal spread. Its airy while blossoms do not resemble the more familiar flowers of Cornus florida or Cornus kousa, but there will eventually be small blue berries that will attract birds. The name refers to the attractive layered arrangement of the branches.
The Silverbell is slightly larger, possibly reaching a height of 35 feet. You can see this tree on the Bridge of Flowers. Clusters of small white bell-like flowers appear in mid to late April.
Rate of growth will depend on your soil, but I once listened to an arborist explaining to a friend that she could control the size of a tree by regular pruning. This is good to remember when a small blooming tree that you have planted becomes larger than you and your garden’s definition of ‘small.’
Careful planting is important to the future of a tree. Dig a generously wide hole and loosen the soil within the hole. It should be only as deep as the roots, or balled roots, or the container that your tree came in
If you have a small bare root tree support it in the middle of the hole so the root collar is even with the soil level. Fill in with the original soil. Tamp it down to make sure there are no air pockets and that the tree is firmly held. As you fill in the last of the soil make sure it is just below the root collar and that there is a shallow basin to collect water. Water well. Then mulch with two inches of wood chips or bark, but make sure to keep the mulch away from the trunk. No mulch volcanoes!
If your tree came balled and burlaped place it in a good big hole so it is at the proper level. Then cut away and remove all the wires and the burlap. If there is burlap left underneath that is fine as long as it is not plastic burlap. You want to free all those roots. Fill with original soil, water and mulch as for a barerooted tree. If you have a landscaper do this for you, make sure the wires and burlap get removed. I have heard horror stories of inept landscaping help not doing this resulting in the loss of the trees.
If your tree comes in a container and you find the roots are rootbound you should cut an X at the bottom of the root ball with a sharp knife, and make three or four cuts down the sides. This root-pruning will encourage new root growth. This is not unlike firmly combing out tangled roots in a rootbound perennial before planting. As with any plant, keep it well watered for the first year while it is getting established.
Trees give us so much: sculptural form, shade, the whispering of breezes among the leaves, seasonal flowering and food and shelter for many creatures. Choosing the appropriate tree for its site and planting it well will give you decades of beauty.
Between the Rows April 4, 2015