Early Potomac™ Yellow Snapdragon

Early Potomac™ Yellow is a cut-flower snapdragon (*Antirrhinum majus*) identified by PanAmerican Seed as PAS336394. The breeder describes upright plants with 39–60 inch stems and a 10–12 inch width, and recommends greenhouse or high-tunnel production for spring and autumn programs ([Early Potomac™ Yellow](https://www.panamseed.com/Products/057801176013832/snapdragon-early-potomac-yellow/); [PanAmerican Seed culture guide](https://www.panamseed.com/documents/catalogs/17196_PIG_ENG_LR.pdf)). ## Growth and Flowering PanAmerican classifies this cultivar as Group 3 and lists late-spring, summer, and late-summer flowering. Its production guidance calls for medium-to-long days and moderate-to-high light; crop timing varies with season and growing conditions. ## Siting Choose a sunny site with room for the upright flower stems. The breeder identifies greenhouses and high tunnels as suitable production settings, and lists spring and autumn crop programs. ## Maintenance For cut-flower production, the PanAmerican guide recommends at least two support nets, preferably three, raising the upper net as stems lengthen. For garden planting, support tall stems as needed and follow local seasonal growing conditions. Kew accepts *Antirrhinum majus* in Plantaginaceae ([Kew: Antirrhinum majus](https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:799180-1)).