Pontiac Daily Leader
URBANA — As the growing season wraps up and gardeners put vegetable beds to rest and clean and store tools for the winter, there is one task they may be forgetting. Testing the soil’s nutrients can provide a better understanding of a garden’s health and save money in the long run.
Over time, soil fertility, pH, and even soil structure can change as nutrients are depleted. Testing soils will identify missing nutrients that can then be addressed as needed. Unless there is a specific issue being remedied, soil should be tested every three to five years.
Fall is a great time for gardeners to test since soil temperatures are still above 50F and the growing season is slowing down. Any added organic matter will then decompose, and nutrients will filter into the soil over winter well before planting season.
University of Illinois Extension horticulture educator Sarah Vogel says depending on the soil’s natural fertility and what is being grown in it, plants can perform well for years without needing fertilizer. While fertilization can help with plant vigor and vitality, experts recommend first establishing a need and purpose for fertilizer. Understanding soil nutrient concentrations before applying fertilizer is important in a sustainable landscape.
“If fertilizer is not necessary, why waste product and time applying it?” says Vogel. “Overfertilization can harm trees, shrubs, and even turfgrass especially during drought conditions.”
Excess fertilizer can also...
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