Post Hurricane Landscape Care:  Replant Smartly with Hurricane Resistant Trees

Post Hurricane Landscape Care: Replant Smartly with Hurricane Resistant Trees

After a devastating windstorm, as we just experienced in the Panhandle with Hurricane Michael, people have a tendency to become unenamored with landscape trees.  It is easy to see why when homes are halved by massive, broken pine trees; pecan trunks have split and splayed, covering entire lawns; wide-spreading elms were entirely uprooted, leaving a crater in the yard.  However, in these times, I would caution you not to rush to judgement, cut and remove all trees from your landscape.  On the contrary, I’d encourage you, once the cleanup is over and damaged trees rehabilitated or disposed of, to get out and replant your landscape with quality, wind-resistant trees.

First, it’s helpful to take a step back and remember why we plant and enjoy trees and the important role they play in our lives.  Beyond the commercial aspect of farmed timber, there are many reasons to be judicious with the chainsaw in the landscape and to plant anew where seemingly sturdy trees once stood.  For example, trees provide enormous service to homes and landscapes, from massive cooling effects to aesthetic appeal.  Take this thermal satellite image of Hurricane Michael’s path that simultaneously shows the devastation of a major hurricane and the role trees play in the environment.

Lightly shaded area showing higher ground temperatures from loss of vegetation.

In the lighter colored areas where the wind was strongest and catastrophic tree damage occurred, the ground temperatures are much higher than the unaffected areas.  Lack of plant life is entirely to blame.  Plants, especially trees, provide enormous shading effects on the ground that moderate ground temperatures and the process of transpiration releases water vapor, cooling the ambient air.  Trees also lend natural beauty to neighborhood settings.  There is a reason people termed the hardest hit areas by Michael “hellscapes”, “warzones”, etc.  Those descriptions imply a lack of vegetation due to harsh conditions.  In this respect, trees soften the landscape with their foliage colors and textures, create architecture with their height and shape, and screen people from noise, unpleasant sights and harsh heat.

Though all trees give us the benefits outlined above, research conducted by the University of Florida over a span of ten major hurricanes, from Andrew to Katrina, shows that some trees are far more resistant to wind than others and fare much better in hurricanes.  In North Florida, the trees that most consistently survived hurricanes with the least amount of structural damage were Live Oaks, Cypresses, Crape Myrtle, American Holly, Southern Magnolia, Red Maple, Black Gum, Sycamore, Cabbage Palm and a smattering of small landscape trees like Dogwood, Fringe Tree, Persimmons, and Vitex.  If one thinks about these trees’ growth habits, broad resistance to disease/decay, and native range, that they are storm survivors comes as no surprise.  Consider Live Oak.  This species originated along the coastal plain of the Southeastern United States and have endured hurricanes here for several millennia.  Possessing unusually strong wood, they have also developed the ability to shed the majority of their leaves at the onset of storms.  This defense mechanism leaves a bare appearance in the aftermath but allows the tree to mostly avoid the “umbrella” effect other wide crowned trees experience during storms and retain the ability to bounce back quickly.  Consider another resistant species, Bald Cypress.  In addition to having a strong, straight trunk and dense root system, the leaves of Bald Cypress are fine and featherlike.  This leaf structure prevents wind from catching in the crown.  Each of the other listed species possess similar unique features that allow them to survive hurricanes and recover much more quickly than other, less adapted species.

Laurel Oak split from weak branching structure.

However, many widely grown native trees and exotic species simply do not hold up well in tropical cyclones and other wind events.  Pine species, despite being native to the Coastal South, are very susceptible to storm damage.  The combination of high winds and beating rains loosens the soil around roots, adds tremendous water weight to the crown high off the ground, and puts the long, slender trunks under immense pressure.  That combination proves deadly during a major hurricane as trees either uproot or break at weak points along the trunk.  In addition to pines, other widely grown native species (such as Pecan, Laurel Oak and Water Oak) and exotic species (such as Chinese Elm) perform poorly in storms.  Just as the trees that survive storms well possess similar features, so do these poor performers.  We’ve already mentioned why pines and hurricanes don’t mix well.  Pecan, Laurel Oak, and Water Oak tend to have weak branch angles and break up structurally in wind events.  The broad spreading, heavy canopy of trees like Chinese Elm cause them to uproot and topple over.  It would be advisable when replanting the landscape, to steer clear of these species or at least site them a good distance from important structures.

This piece is not a warning to condemn planting trees in the landscape; rather it is a template to guide you when selecting trees to replant.  Many of our deepest memories involve trees, whether you first climbed one in your grandparent’s yard, fished under one around a farm pond, or carved your initials into one in the forest.  Don’t become frustrated after a once in a lifetime storm and refuse to replant your landscape or your forest and deprive your children of those experiences.  As sage investor Warren Buffett once wisely said, “Someone is sitting in the shade today because someone planted a tree a long time ago.”

For these and other recommendations about how to “hurricane-proof” your landscape, contact your local UF/IFAS Extension Office.  Plant a tree today.

Consider American Beautyberry for Naturalized Landscapes

Consider American Beautyberry for Naturalized Landscapes

American Beautyberry Fruit.
Photo credit: Larry Williams

American beautyberry (Callicarpa americana) puts on quite a show during late summer and fall with its bright purple fruit. I have some of these plants in my landscape and they are beginning to show color now with their profusion of berry-like fruit found along the thin branches, resulting in the plant taking on a weeping habit.

Each fruit is only about 1/3 inch in diameter but collectively form roundish clusters that encircle the stems. The berries are particularly showy in September and October. They remain on the plant, even after its leaves have dropped, into early winter if not eaten by birds and other wildlife.

Many species of birds will eat beautyberry fruit including robins, cardinals, mockingbirds, brown thrashers, finches and towhees. Birds are a major method of seed dispersal for this plant.

One of my neighbors noticed my plants a number of years ago and commented, “I had never thought about using this plant in a landscape.” He grew up in Northwest Florida and had always been used to seeing American beautyberry plants growing in the wild as they are native. The plant is not well suited for manicured, formal landscapes but can be useful in a naturalized garden.

Even though I consider the showy fruit its best attribute, the small, lavender flowers tightly bunched together along the stems during June to August are attractive, as well.

American beautyberry is a deciduous shrub without much ornamental value during the winter. But during the growing season, its somewhat course, fuzzy, light-green leaves look good in a setting with other darker-leaved shrubs.

It grows well in part shade/part sun as an understory plant beneath larger trees such as pines and oaks.

Be sure to allow enough room for this sprawling shrub to develop into its mature size of three to eight feet in height with an equal spread.

It may also be used as an informal screen or even as a specimen plant. But avoid using it where it will require regular shearing as the flowers and fruit are produced on new growth.

Thinning out old or low-growing branches is a better method of pruning this plant. American beautyberry may self-seed but I have not seen this to be a bothersome problem.

America beautyberry is somewhat available in the nursery trade and is fairly easy to propagate from stem cuttings. It can be propagated from seeds, as well. In addition to the purple fruiting types, look for cultivars such as ‘Russell Montgomery’ that produce white fruit. There are also other nonnative species of Callicarpa worth looking at, such as C. dichotoma and C. japonica.

Florida Native: Muhly Grass Muhlenbergia capillaris

Florida Native: Muhly Grass Muhlenbergia capillaris

Versatile, easy-care, beautiful, native – what’s not to love about muhly grass?

Muhly grass is a hardy landscape choice with dramatic fall blooms. Photo credit: Carrie Stevenson, UF IFAS Extension

How is it versatile? It makes a perfect border along a fence or structure. Plant it in a single or double row depending on available space. Use a single plant as a specimen in a smaller landscape. Muhly grass can also be planted in mass to serve as groundcover in a larger landscape.

What makes it easy-care? Since it only grows into a 3-foot-tall mound, there is no need to continually prune it as you would have to do for many landscape shrubs that serve a similar function. Plant muhly grass in areas where you only want to have plants grow to a 3-foot height, such as under windows or along a short fence. This clumping grass can be pruned in late winter to remove dead leaf blades, but it is not necessary. There are few pest and disease issues and its’ fertility needs are low. This tough plant can handle both drought and inundation with water. Perfect for a rain garden! Flowering is best in full sun, but it can take part sun as well.

What’s so beautiful about a grass? In the fall, abundant pink to pinkish/purple blooms cover the canopy of the grass and add color to the fall landscape. The wispy blooms move with the breezes and add interest with their movement. The new cultivar ‘Fast Forward’ blooms as early as August and into the winter. If pink is not your color, there is a form with white blooms known as ‘White Cloud’.

Consider adding some muhly grass to your landscape. You will love it as I do.

 

Dotted Horsemint Attracts More than Pollinators

Dotted Horsemint Attracts More than Pollinators

In 2016, I wrote an article for Gardening in the Panhandle called “Attract Pollinators with Dotted Horsemint” introducing readers to this tough native plant that supports native pollinators. If you have flowers in your garden, you probably have pollinators and a whole lot of other insects but if you want a plant that lets you observe a really diverse palate of bugs dotted horsemint Monarda punctata.

When I find I have some downtime at home I have a habit of wandering the yard looking for interesting insects. Admittedly, I usually have my phone in hand hoping to get a great photo or video of my arthropod visitors, but it is a productive task, too. As strange as it may sound, I can count this hobby as part of my integrated pest management landscape maintenance strategy – scouting!

My favorite plant to visit on my scouting run is normally not afflicted with pests, but it hosts so many different insects it always gets a stop on my rounds. When dotted horsemint is in full flower it is visited by a lot more than pollinators. I’ve recorded daily visits from assassin bugs, ants, beetles, flies, dragonflies, spiders, thread-waisted wasps, honey bees, butterflies, and moths.

Here’s a photo album of frequent visitors to my dotted horsemint from this summer – enjoy!

Florida Wildflowers: Butterfly Weed

Butterfly Weed – Photo courtesy Mary Salinas

Butterfly weed, Asclepias tuberosa, has been gaining in popularity in the perennials market as it attracts adult butterflies to feed on its nectar and monarch caterpillars to feed on its leaves. Gardeners are also turning to use more Florida native plants in their landscapes.

Independent or native nurseries tend to be the best source for plants but the supply can be quite limited. There are more sources for seed, though, online. Try to purchase seed from a local or Florida grower as those seeds will be better adapted to our climate.

Butterfly Weed – Photo courtesy Mary Salinas

When growing butterfly weed from seed, transplant your new plants into their garden spot when they are still quite young, 2-3” tall, as they will be more successful in getting them established. Choose your planting location wisely. Once you plant it in a particular area, don’t move it. They are finicky about being moved from spot to spot.

For more information:

Monarch Butterfly

Asclepias tuberosa Butterfly Weed, Indian Paintbrush

Florida Wildflower Foundation