Warren County Connection A Publication of Cornell Cooperative Extension of Warren County
March 2020
Salt Damage to Plants By Mary Jo R. Gibson, Master Gardener, Columbia County, PennState Extension
sodium chloride. But this salt may negatively affect many of our plants.
There are two kinds of damage from the de-icers that we apply to our roads and walkways: salt spray and soil-borne salt. Salt spray can travel up to 1000 feet from salt-treated roadways by fast-moving traffic and the wind. This spray pulls the water out of the leaves of conifers and from the buds of deciduous trees. Salt damage on yews. Salt spray is especially damaging in Photo credit: Joseph LaForest, the late winter and early spring when University of Georgia, Bugwood.org leaf buds are beginning to swell. Often the leaves and flowers on the Learn how to minimize damage to side of the tree or shrub facing the plants from winter application of rock road do not open or are stunted besalt as a de-icer. This article also dis- cause of this drying salt spray. cusses which plants are most and least vulnerable to salt. Soil-borne salt damage occurs when the de-icer from a road or walkway When we think of the effect that accumulates in the soil from saltwinter has on our gardens, we usual- laden runoff as the snow and ice ly think about how bitterly cold it melt. The amount that accumulates gets. The depth of insulating snow is affected by the type of soil and its for our plants is another concern. We drainage. Soils that are higher in clay worry about ice storms breaking the can hold more salt than sandy soils. limbs of our trees and shrubs. How- Unlike salt spray, soil-borne salt injuever, there is another problem that ry develops slowly over time and we must consider—salt damage to causes many complications for plants from de-icers. It is crucial that plants. Salts absorb and bind tightly we are safe when we drive and walk with water, preventing roots from during the winter, thus we need de- absorbing water. The salt can even icers. The most efficient, inexpensive pull water from the plant creating a and widely used chemical for melting drought-like condition. At higher snow and ice is common rock salt, (Continued on page 3)
In this issue: Gardening With Children
3
Pizza Garden - Youth Activity
4
Caraway
5
Cauliflower Potato Soup
5
Marijuana and Pets Should Not Mix
6
Financial Security in Life: Finding Money to Save
7
Keep Your Kids Busy Working This Summer!
9
What You Need To Know About Coronavirus Disease
10
Irish Chicken and Dumpling Soup
11
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