Compost and fertilizers tend to get most of the attention when people talk about fertile soils. What often goes unnoticed is that certain plants can also help improve the ground, since not all of them simply extract resources from the soil. Some give something back by mobilizing nutrients that other species would struggle to access.
These five species show that some plants can contribute far more to the soil than they take from it.
Sunflowers: Deep Roots That Revitalize the Soil
Sunflowers do more than draw resources from the soil; they also leave a positive mark on it. Their flowers are only part of the story. Their roots play an important role as well, pushing through compacted layers of soil and improving both water infiltration and air circulation.
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