John Allen has an addiction, and he readily admits it. He can’t live without cycads. He has planted dozens of varieties of them across his 1-acre hillside property in rural Vista. Allen bought the ...

A bare-rooted young cycad seedling reveals how a root system is initially constructed, shown below the brown line indicating the soil surface. This root growth is enabled by resources that are stored ...

DURHAM, N.C. -- Once a favored food of grazing dinosaurs, an ancient lineage of plants called cycads helped sustain these and other prehistoric animals during the Mesozoic Era, starting 252 million ...