Very refined oils known as horticultural oils have the consistency of water. They are sprayed on plants to smother some kinds of insects or their eggs.
In a decade marked by extreme weather, the gardeners of America’s largest urban park face new questions. Maria Hernandez, the Central Park Horticulture Director, paves the way.
Very refined oils known as horticultural oils have the consistency of water. They are sprayed on plants to smother some kinds of insects or their eggs.
In a decade marked by extreme weather, the gardeners of America’s largest urban park face new questions. Maria Hernandez, the Central Park Horticulture Director, paves the way.