Cool White Snapdragon

Cool White snapdragon (Antirrhinum majus ‘Cool White’) produces upright spikes of white flowers on strong stems. PanAmerican Seed lists this Cool series selection for cool-season greenhouse and high-tunnel production, with flowering in early spring, autumn and winter and stems about 39–60 inches long ([Cool White](https://www.panamseed.com/Products/057803347005863/snapdragon-cool-white/); [PanAmerican Seed cut flower catalog](https://www.panamseed.com/PdfAssets/pdfpage.aspx?pdfid=250)). ## Garden Use and Growing Conditions The tall stems are suited to cutting and add vertical interest in borders. The series is described as winter-flowering under production conditions; outdoor flowering depends on local climate and planting date. For garden culture, snapdragons grow in full sun and well-drained soil. Illinois Extension describes snapdragons as cool-season flowers often planted in spring or fall ([Illinois Extension](https://extension.illinois.edu/flowers/snapdragon)). ## Maintenance Remove spent spikes to encourage additional growth and keep the planting tidy. Stake tall stems if they lean, and avoid persistently wet soil. Illinois Extension recommends deadheading and notes that tall snapdragons may need support; these are species-level care recommendations.