Pelargonium x hortourm
Start inside at least 12 weeks before last spring frost. Cover seed lightly and then provide constant warmth; 21-24°C (70-75°F) and moisture. Bottom heat is essential. Provide total darkness until germination occurs, in 5-15 days and be sure to check regularly for germination to avoid over-stretching of seedlings. Darkness can be achieved by using another tray or by keeping the trays/ pots in a dark room. Once seedlings start to appear provide lots of light. Plant outside after last frost, 8-12" apart. Prefers full sun, but will tolerate light shade. Deadhead and remove yellowed leaves. Do not over fertilize.