The Geranium Wilhelm Langguth , 'Pelargonium x hortorum', is a unique variety that offers beautiful red flowers. The Wilhelm Langguth has excellent vigor and great landscape performance. The soft green and white variegated foliage below attractive red flowers make Wilhelm Langguth a very popular old time favorite with consumers. Plant in ordinary well-drained soil. Over fertilization results in excessive foliage and few flowers. Pinching of the shoots will promote bushiness Remove spent flowers to enhance flowering.