Plant a Native Tree this Winter to Provide Biodiversity in Your Yard

I live in a grove of large stately live oaks. Only one is technically on our property; the grove continues across the road and in adjacent yards, even down the road a piece. We are also blessed with some large pines, though we have lost a few to lightning strikes.

We are on a slope that runs down towards a drainage way that used to be a creek. I imagine this was originally a mature mixed pine/hardwood forest, and eventually pasture, with well distributed live oaks and pines until time of development in the 1960s.

We are not trying to restore what used to be here, but our goal has been to diversify the native tree species in our yard for the benefit of wildlife. When the rose-of-Sharon tree planted by previous owners was declining due to old age, we replaced it with a blue beech, a native tree with pretty fall color, gorgeous muscle-like bark, and unique seed structures. In addition, native caterpillars utilize its leaves which are then eaten by birds, lizards, spiders, and others.

At the edge of the patriarch live oak in our front yard, we planted red buckeye, a small tree with red tubular flowers in mid-March, timed perfectly for the return of migrating ruby-throated hummingbirds. We also planted a sassafras tree that is a larval food plant for the spicebush swallowtail.

This American beech tree sprouted from a beech nut within in a bag of leaves used as mulch in Legare’s yard. Photo by Donna Legare.

This American beech tree sprouted from a beech nut within in a bag of leaves used as mulch in Legare’s yard. Photo by Donna Legare.

We utilize every space available. Between our driveway and our neighbor to the west, we placed a Chickasaw plum and some blueberry bushes and allowed American beautyberry and elderberry to sprout up on their own (free plants ‘planted’ by the birds).

One year for Christmas, I asked for an American beech tree, which we planted in our back ‘woods’ along with a spruce pine to replace a large loblolly pine that had died. We selected spruce pine because of its shade tolerance.

Another year I collected bags of leaves from a neighbor down the road. The bags were filled with golden beech leaves, which I used as mulch in a bed adjacent to our road. It unexpectedly contained seeds and the following year an American beech sprouted. This is one of the hardwoods that probably graced this slope before agriculture. It is a beauty every fall with its golden leaves which persist into winter. When mature, both American beech trees will sport beech nuts and birds will have a feast on these seeds. Another free plant!

One side of our front yard is a pollinator garden which requires good sun, so we have selected smaller trees in its vicinity – sparkleberry, rusty blackhaw, flatwoods plum, parsley hawthorn, hoptree, and fringe tree. A red cedar was selected to screen a telephone pole and streetlight from our front porch view.

Another freebie is a native persimmon that popped up on the east side of our house in the border between us and neighbors. It is now a good 15 feet tall.

By now you are getting the point that if you have beds with leaves in them around existing trees and shrubs, the seeds of native plants will germinate, many of which may be quite valuable to wildlife. The trick is to learn what these plants look like when they are seedlings. Invasive plants such as the trees Ligustrum and Chinese tallow will also sprout and will need to be pulled up. This is easy to do when they are seedlings. Likewise, some native plants will need to be pulled. We have a black cherry seedling flagged under our live oak tree. It was most likely planted by a bird who sat on a limb of the live oak after it had eaten and digested a wild cherry. Out popped the seed, conveniently fertilized with bird poop. However, it is far too shady for this cherry to thrive here. We will move it this winter to a sunnier spot in the back yard.

Our New Year’s resolution every year is to increase the percentage of native plants in our yard. You would think we would be running out of room after nearly 30 years. At first, we made room for native trees and shrubs by removing invasive plants like NandinaLigustrum, and female Podocarpus and replacing aging but desirable non-native trees with young natives. Then we started squeezing trees into existing beds, finding space here and there, creating layers of native plants. We planted overstory trees like the American beech, understory trees like blue beech and silverbell, large native shrubs like arrowwood viburnum and spicebush, and then wildflowers and native grasses. All of these are worked in and around some beautiful old camellias, sasanquas, and azaleas, planted by the original owners of the property.

We are senior citizens now, but we keep on planting. We prefer to plant trees in three-gallon pots. For one thing it is easier on the person doing the planting (smaller hole to dig), but mainly we find that the less time trees have spent in pots, the healthier they are and the faster they take off if planted in the correct conditions and planted properly. Bareroot trees planted in winter are particularly robust.

This winter, we are replacing another aging non-native tree with two natives in our backyard ‘woods’, the black cherry mentioned above and a white oak. I have always wanted a white oak and wish I had planted one 30 years ago! It will have pretty fall color, eventual acorns, and will provide insects, primarily caterpillars, for nesting birds. Over 300 caterpillar species are known to utilize oak trees in the Tallahassee area.

Natives Can Thrive in Sandy Soils

East of the Apalachicola river, running to Alachua County, a landform known as the Cody Scarp delineates soils in Tallahassee. To the north of the Scarp is the Red Hills Region and to the south is the Woodville Karst Plain. As a resident of Wakulla County for many years, and currently residing in southern Leon County, I know gardening and landscaping in the sandy soil south of this line is much different than in the heavier loamy clay soils to the north.

You will see many beautiful native plants, such as American holly, on the sandy trails in Wakulla Springs State Park. Photo by John Ruter, University of Georgia, Bugwood.org.

You will see many beautiful native plants, such as American holly, on the sandy trails in Wakulla Springs State Park. Photo by John Ruter, University of Georgia, Bugwood.org.

So many plants native to this area thrive and perform extremely well in sandy soil. The abundance of birds and wildlife around my immediate neighborhood is a testament to the power of native plants. The thin sandy soil in the Woodville area where I live sustains a wide variety of natives. If you want to get a good idea of what will grow in these soils, take a walk at Wakulla Springs State Park on the Sally Ward Spring Run, which starts on the main road up from the Lodge at Wakulla Springs. The shady trail wanders through a beech-magnolia forest unique to our area. Besides the over-story of beech, magnolia, hickory, sweetgum, pines, and oaks you will find an understory of red buckeye, sparkleberry, yaupon holly, American holly, sugarberry, many species of hawthorne, saw palmetto, native azaleas, and beautyberry.

Indian pink (Spigelia marilandica) is a hardy native perennial that grows in the understory of various deciduous hardwood forests in Florida. Photo by David Stephens, Bugwood.org.

Indian pink (Spigelia marilandica) is a hardy native perennial that grows in the understory of various deciduous hardwood forests in Florida. Photo by David Stephens, Bugwood.org.

On my own property, I’ve found many of these same natives that require no maintenance to thrive. Wildflowers that flourish on their own include ironweed, goldenrod, blue curls, rosin weed, ruellia, elephant’s foot, ageratum, horsemint, partridge pea, butterfly weed, and coralbean. I’ve encouraged the indigenous deep green partridgeberry, which is the dominant groundcover in the forest. A woodcock shows up every year about the time the berries appear on this plant, and I wonder if it could be a food source for this prehistoric looking ground nesting bird. Alongside these plants, I have added many other native species that have basically managed with not a lot of attention, watering only when absolutely necessary. These include Indian pink, scarlet sage, purple coneflower, salt and pepper, and white wild indigo. Most are attractive to ruby-throated hummingbirds and many species of butterflies.

Ashe magnolia (Magnolia macrophylla var. ashei) is native to Florida, but it is endangered and can only be found in a few counties in the Panhandle. Photo by John Ruter, University of Georgia, Bugwood.org.

Ashe magnolia (Magnolia macrophylla var. ashei) is native to Florida, but it is endangered and can only be found in a few counties in the Panhandle. Photo by John Ruter, University of Georgia, Bugwood.org.

A few other natives surprised me by doing well in this sandy soil. Not usually found here, but native to Florida, firebush, Ocala anise, and Ashe magnolia have thrived on my land. I skeptically planted the deciduous Ashe magnolia and also a needle palm, both found over in Torreya State Park, and both have done remarkably well. The magnolia is now five years old, over 12 feet tall, and has bloomed every year since it was first planted. The Ocala anise fits the criteria for an evergreen screen between my house and the neighbor’s perfectly. In a severe drought I do put the soaker hose on it occasionally.

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Additionally, I’ve added a fast-growing sycamore (the rapid growth on this is phenomenal) for shade to replace an unhealthy laurel oak that needed to come down and a pine that was hit by lightning and was too close to the house to leave. Other pines have been lightning struck and I left them standing. The snags are the perfect resting place for swallowtail kites in summer and the pileated woodpeckers constantly work them for bugs. My favorite tree is our state tree, the cabbage palm. I planted many over the years as memorials to loved ones. Some are now 10 feet by 10 feet, starting from one-gallon pots nine years ago.

As with all landscaping ventures, the right plant for the right place is crucial to success, as is watering the first six months to a year. You can’t put an Ashe magnolia in full sun and expect it to survive. You also can’t plant trees and then go on vacation expecting to come back to healthy plants. Protect your efforts and hire someone to water while you are gone. Help our native bees, butterflies, insects, birds, reptiles, and mammals by planting what they need to survive and thrive.

Adopt a New Landscape Attitude

Native bee on Purple Coneflower

Native bee on Purple Coneflower

The interest in native plants around the country is driven by two concepts. First is the realization that using American native plants in residential and commercial landscaping is a patriotic act. People are beginning to ask why we fill our yards with plants from foreign lands when there are strong ecological reasons to select American plants.

The other reason native plants are so important is their benefit to all types of wildlife. Whether pollinators or the myriad other American insects, they all depend primarily on American native plants for survival. Native plants are the base of the food web feeding native insects that are then eaten by birds, lizards, frogs, spiders and on up the food web. The insect world provides abundant food for wildlife from songbirds to grizzly bears.

The underlying reason native plants are so important to native wildlife has to do with leaf chemistry. In general, native insects can only digest native plants. Over eons native insects have developed ways to handle toxins in native plants. In most cases, American insects cannot digest plant matter from other continents.

Pollinator Patch an integral part of the landscape for insects.

Pollinator Patch an integral part of the landscape for insects.

Most landscapes in our neighborhoods are 90% foreign (non-native) with only a few native trees such as live oak, pines, or dogwood. The great majority of plants making up hedges, foundation plantings or small trees are non-native and some, like Nandina, may be invasive.

Examples from China or Japan are azaleas, camellia, Loropetalum, boxwood, crape myrtle, Chinese fringe tree, Ligustrum, Drake elm, mimosa, loquat, and Taiwan cherry. The last five are invasive non-native plants that should not be planted due to their propensity to spread by their abundant seeds.

Azaleas and camellias are prized in the landscape for good reason. Not only are they beautiful, but they also do not spread into wild areas. In my yard I have a gorgeous Japanese magnolia, one male Podocarpus (does not produce berries like females do), and some azaleas and camellias all planted by the previous owner. We love them. Over time, however, we have removed all female Podocarpus, all Nandina, some azaleas and boxwood to make room for 46 species of native trees and shrubs, 37 species of wildflowers and 9 species of native vines and ferns. This represents a huge shift from non-native to native species in our yard. Twenty-eight years ago, 100 percent of the landscaping at our house except for the large trees in our yard were non-natïve. Now at least 90% of our plants are native.

Another important aspect of your landscape to consider is the reduction of lawn area. Eastern North American birds evolved in and with forests. To keep maintenance simple, remove a section of lawn, cover the soil with pine straw mulch and plant trees. Mulched areas under existing trees, rather than lawn, are needed to provide habitat for insects and other invertebrates. For example, a caterpillar high in an oak tree usually drops to the ground and hides in the oak leaf mulch to make its cocoon or chrysalis and turn into a moth or butterfly. It cannot do this if lawn is under the tree. It is sure death.

The shift to native in your yard can happen over time but will require a shift in attitude. You may have to alter your traditional sense of what a landscape should look like. Do not expect all plants to be evergreen. Give up your notions of perfection and a super neat and tidy trimmed look. Instead, ask yourself what will a plant do for songbirds or for pollinators? Will this plant feed caterpillars of swallowtail, monarch, or zebra longwing butterflies? What plants will provide nectar or pollen for sweat bees or pollinating flies or bumble bees?  Does a plant like pokeweed support insects that songbirds will feed their young? Will it provide fruit for migrating birds? Can I plant a range of plants that will provide native berries for birds over several seasons?

Forested habitat is also good for insects and songbirds. Photo by Les Harrison

Forested habitat is also good for insects and songbirds. Photo by Les Harrison

For pollinators, keep two factors in mind. First, 3,954 species of bees in North America make small burrows in the ground for nests and are not aggressive at all. For an example of this, see the video by googling tickle bees Portland on vimeo.

Secondly, remember that all types of plants on the planet, about 95%, need to be pollinated by insects to create the next generation of plants. This means not only pretty flowers like black-eyed Susan or sunflowers need pollinators but also shrubs like blueberries, American beautyberry, and wild azaleas. Also, most all our trees need native bees and other insects to pollinate flowers to make seeds. Dogwood, greybeard, redbud, magnolia, tupelo, and tulip poplar are examples. Locally oaks and pines are the two most common species of tree that use wind for pollination. Your pollinator plants can include trees, shrubs, wildflowers, as well as judiciously selected non-native annuals and perennials.

To provide berries for birds, try planting American beautyberry, arrowwood, hearts-a-bustin’, bluestem palmetto and pokeweed. Some of these plants will be planted in your yard for free by birds, and others can be purchased from nurseries. If the birds plant too many, weed them out and keep a few nice specimens. Keep in mind that by planting any of these native plants, whether wildflowers, shrub, or tree you are providing insects, quite often caterpillars, for your birds to eat.

All the above information and lots more can be found in Dr. Doug Tallamy’s two books, Bringing Nature Home and Nature’s Best Hope. He reminds us that ninety-six percent of our land birds must feed their babies insects that live only on American native plants. His research shows that when a landscape dips below eighty percent native plants, the reproduction rate of Carolina chickadees declines.

Maturing beautyberries are currently offering stark contrast to their foliage. This native species, along with many others, are producing food for overwintering wildlife. Photo by Les Harrison.

Maturing beautyberries are currently offering stark contrast to their foliage. This native species, along with many others, are producing food for overwintering wildlife. Photo by Les Harrison.

You can help our native wildlife by just replacing a foreign species of tree with an American tree. By replacing “window dressing” landscaping with ecologically functional plants you can convert your yard to a functioning part of our ecosystem. You may need to put your personal preferences aside. No more flower colors to meet your personal preferences or to match the color of your front door or curtains in the house. Color choices will be based on what attracts pollinators. Some of the shrubs around your house may be bare in winter but will have produced nectar and pollen in spring and berries in autumn. Shrubs may not be neat and trimmed. Shift your attitude to favor nature! Start the process this fall or winter by planting an American tree rather than one from China or Japan. Go American! Go native!