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Plants

Plants

“The goldenrods are blooming, so it must be the end of summer.”

Plant of the Month

by Linda Martinson
Blue Ridge Naturalist

The late summer/early fall flowers are bountiful this year because we had plenty of rain through mid-summer followed by ample sunshine into fall. As usual, we can’t miss the goldenrods with their brilliant color! They seem to be blooming along all the roads, in all the ditches and across every meadow, their thick clusters of bright golden flowers waving good-by to summer.

Goldenrods are short-day (i.e., blooming from late summer into fall), native plants of the genus, Solidago, that reproduce through its roots, bulb, stems and by its seeds. There are 120+ species of goldenrods belonging to the aster family, Asteraceae, a large family of tough, herbaceous and adaptable perennial species that spread easily into varied locations—there are even woodland goldenrods—and also crossbreed fairly easily with other plants. Goldenrods are mostly native to North America, including Mexico, but a few species are native to Eurasia and South American. Some species from North America have been introduced to other parts of the world, mostly in Europe.

 

Goldenrods with the aster cousins.

Goldenrod plants are perennials growing from rhizomes, a continuously growing underground horizontal stem with lateral shoots. Their stems range from growing along the ground to curving upward to standing erect, and vary in height from a few inches to three feet or more, and each individual flower head is about 1/8” long and wide. Most species of goldenrod have several independent horizontal branches, but often the upper part of the plant has multiple attached branches. The stems are characteristically long and woody with widely-spaced clusters of distinctive and rather elegant small yellow flowers that are grouped into complex compound arrangements of blossoms.

Do you think you or someone you know may be allergic to goldenrod or have hay fever from its pollen? Wrong! No one can be allergic to goldenrods because it is pollinated only by insects, so it doesn’t produce too much pollen and what pollen it does produce is too heavy and sticky to be blown away. Goldenrod is often blamed for causing allergies and hay fever because it blooms at the same time as ragweed (Ambrosia sp.) which, because it is a wind-pollinated plant producing excessive light, fly-away pollen, does cause hay fever and other allergic reactions.

Although they are quite common and even invasive in some areas, goldenrods are not to be taken for granted because they are remarkable plants. Not only are the flowers distinctive and showy, all the parts of goldenrod plants that are above ground are edible. The flowers make stand-out garnishes on salads, and the leaves can be used fresh or dried to make tea. The leaves also can be cooked like spinach or added to soups, stir-fry dishes or casseroles.

“Are you sure these goldenrod plants are edible?”

All varieties of goldenrod are not only nutritious but also can be used for many health benefits, not only as fresh or dried herbs in teas, but also as an herbal medicine in an extract, as a tincture, or in capsules. Some Native American cultures used the seeds of some goldenrod species for food; chewed the leaves of goldenrod plants to soothe sore throats; and prepared tonics from the roots to relieve toothaches. Traditionally, one variety of goldenrod in particular (Solidago virgaurea) has been used in a tonic to cleanse the kidneys and bladder during a healing fast and to reduce inflammations caused by kidney stones or bacterial infections.

Among its many other virtues, goldenrod plants are attractive sources of nectar for bees, flies wasps, and butterflies. Honey can be gathered from the bees that collect nectar from stands of goldenrod. If the honey flow is strong, a very light and almost clear mono-floral, spicy honey can be produced. Strangely, the honey from goldenrods has an almost rank smell and taste while it is ripening, although is is quite mild when it is finished. Goldenrod species are also used as a food source by the larvae of many butterfly and moth species.

Although they are considered weeds by many people in North America, in some places goldenrods are considered a sign of good luck and they are prized as garden plants in Europe, for example. In 1895, goldenrod (Solidago gigantea) was chosen as the state flower of Nebraska and also by the state of Kentucky in 1926 and, just recently, by the state of South Carolina. Although the plant is now more accepted as a garden plant in North America, especially the hybrid species, it has become an invasive species in other parts of the world including China.

Finally, don’t forget that goldenrods are stunning cut flowers in arrangements, as filler flowers or on their own. Just as their branches arch and bend elegantly along the side of the roads to show off their plumes of tiny elegant yellow flowers, they will in a vase, too. The big floppy branches of goldenrod arrange themselves easily around other cut flowers or stand out dramatically in every direction just on their own. And they are easy to pick; the stems don’t have to be cut, you can easily snap them off by hand. So go ahead and resolve to make it a Labor Day tradition to pick a large bouquet of dramatic and virtuous goldenrods for your table.

Resources:

ediblewildfoods.com

americanmeadows.com

Wikipedia

Photos by Linda Martinson

Plants

FLOWER OF THE MONTH: Joe-Pye weed

Photo by Linda Martinson

Submitted by Linda Martinson August 2018

Many late summer flowers are flashy and tall, rising above the lush foliage to attract pollinators. Without a doubt, reaching full potential as flashy and tall, the king of these late summer/early fall flowers is Joe-Pye weed Eutrochium fistulosum (Barratt) Lamont. They are at the peak of their splendor right now and bloom from July into October, bearing fruit in September and October. They were once classified in a different genus (Euptorium), but are now considered part of the genus Eutrochium which includes five herbaceous perennials that occur in the mountains and piedmont of eastern North America and are part of the Asteraceae (Sunflower) family, second only in number of genera to the Orchid family.

The Joe-Pye weeds we are admiring now are huge, stately plants rising up to 10 feet tall with multiple, mostly hollow stems with a vanilla odor, whorled leaves, and topped with large round clumps of showy pink to purplish flowers. A stand of Joe-Pye weeds in bloom can be admired from a considerable distance and provides nectar for a wide variety of pollinators, including Monarch butterflies. Later, flocks of goldfinches can be spotted harvesting the tiny seeds of Joe-Pye.

The legend of its common name is that an Indian medicine man (or early settler) named Jopi or Joe Pye used infusions from the plant to cure typhoid fever. Another legend is that native Americans used the hollow stems to breathe underwater when they were being pursued.

Photo by Linda Martinson

 

Plants

Mountain Laurel in the Spring June 2018

by Linda Martinson Certified Blue Ridge Naturalist

The yearly display of mountain laurels can be one of stunning beauty during May and June when banks of mountain laurel blooms cascade along the roads and down the ridges all over our slice of Western North Carolina. Mountain Laurel (Kalmia latifolia) is a gnarly-branched, broadleaf evergreen shrub or small tree native to Eastern North American from New England to the Florida panhandle, commonly found on rocky slopes and mountainous forest areas. It often grows in dense thickets that can cover large areas of forest floor, and it is admired for its striking spring flowers and bright year-round green foliage. Other names for mountain laurel include Ivybush, Calico Bush, Spoonwood (because native Americans used to make their spoons out of it), Sheep Laurel, Lambkill and Clamoun.

It is surprising that native Americans made spoons from mountain laurel branches, and Lambkill may be a more appropriate name, because all the parts of the plant, the flowers, twigs, and even the pollen, are toxic if ingested. Mountain laurel is poisonous to several different animals besides humans, including horses, goats, cattle, sheep, and deer, and symptoms of toxicity begin to appear about 6 hours following ingestion and are severe.

 

The light-rose to dark-pink flowers are about 1” across and appear in terminal clusters on the branches. The chalice-shaped blooms have five points and open to 10 star points with purple markings inside. The flower clusters cover each shrub/tree for several weeks. Mountain laurels are noted for often having exceptional bloom. As a native plant, mountain laurels are an excellent source of nectar for pollinating insects including native bumble bees and butterflies.

The plant has a unique system of pollination. The unopened blossoms look like little knobs and as they open, the knobs form pockets with the anthers (the pollen carrying part of a flower) curled back like springs. The small purple markings inside present a prominent and clearly marked landing pad for pollinating insects. In most flowers, the anthers are free and exposed so that insects can easily knock off the pollen. The Mountain Laurel has a more efficient pollinating strategy. The pollen of the anthers that are tucked into the blossom pockets is well protected from rain and wind but when a pollinating insect lands on the flower, its weight acts like a trigger springing the taut stem of one of the anthers. The sprung anther hits the insect gently on the back quite efficiently covering it with pollen.

Compared to other flowers, mountain laurel flowers produce a moderate amount of pollen, but because of its efficient trigger system of pollination most of the pollen ends up on the body of a pollinator, rather than being blown around and spilled. It is a highly economic method to spread the pollen which is a good thing, because honey made from large amounts of mountain laurel pollen would be toxic. There is much to admire about the Mountain Laurel: its blossoms are iconic, elegant, and evocative — they remind us of home; it has a highly efficient pollination system; and it has developed ample protection from predators. Mountain laurel is around to stay, and we can admire it every spring.