Thursday, October 16, 2014

October 16, 2014 - Winterberry


This magical shrub, which is excruciatingly ordinary during the spring and summer months, suddenly takes on brilliant color in fall and winter.  This is “winterberry,” a kind of native deciduous holly.  The cultivated varieties of holly you can buy in a plant nursery have very shiny, pointy, dark evergreen leaves.  They are the “poster child” for holly plants, the ones you see in all the Christmas photos.  But there are other holly plants out there that don’t get enough credit.

The winterberry is one such holly.  It is native to eastern North America and southeastern Canada.  Unlike Christmas holly, its leaves are not dramatically pointy or evergreen.  It is a deciduous plant and loses all its leaves in the fall.  It is also much bigger than cultivated holly and grows very quickly--one to three feet per year.  It loves wet, acidic soils, and so the soil of Maine is just perfect for it.  Like most hollies, the winterberry has male plants and female plants.  Only the female plants bear the bright red berries, and a male plant must be in reasonable proximity for this to occur.  It’s hard for me to grasp the idea of a plant being a “boy” or a “girl,” as most plants contain both elements.  Holly is one of those odd exceptions.

Winterberry (Ilex verticillata) has such brilliant red berries!

What I like about winterberry is that it loses all of its leaves.  Even though most of us crave greenery in the winter, it is so striking to see brilliant red berries on bare bony branches.  Apparently, the birds feel the same way since these berries are an important food source for them during the winter.  It is quite a wonderful sight when snow falls and covers all the branches and twigs, yet somehow the bright red berries seem to escape the snow and standout even more brilliantly.  If you want to use the twigs and berries in decorations, it’s best to collect them in late November before other food sources are depleted and the birds start getting ideas about the berries.

Medicinal lore tells us that a tea was once made by boiling the bark, which was used for fevers.  The berries were also used as a cathartic and to expel intestinal worms.  The seeds, bark, and leaves all contain theobromine, which is also found in chocolate and is a stimulant nearly identical to the caffeine in coffee.  In small doses, it mildly stimulates the nervous system, similar to a cup of coffee.  Like caffeine, theobromine taken in large quantities can cause dizziness, nausea, diarrhea, and an elevated pulse rate.

But I don’t collect winterberry for medicinal purposes as I do with many other herbs.  I just enjoy looking at the berries in the dead of winter while I pine away for the spring.  I can’t help but wonder if plants like these exist simply to ease our loneliness in the dark winter months.  There is something about the color red that makes an unspoken promise of life to come.

(Yes, I have to put a disclaimer in.  This article is for informational purposes only and is not meant to diagnose, treat, or cure any ailment.  If you need medical advice, seek a physician.)