The late German horticulturist Theo Sander's extensive work in coaxing fertile offspring from Jonquil crosses was methodical and groundbreaking. Here we can appreciate one of his many seedlings, Theo's Gold is on first site striking in its substance, profound color and overall virility. This a remarkable plant that is tirelessly interesting. Extends the work in fertile jonquils made by the Havens : Regeneration x Limequilla