PELARGONIUM species - Geranium
 PELARGONIUM species Geranium 
 pel-är-go’ne-um Annual Easy

Geraniaceae; native to South Africa.

Germination: Seed may be scarified before shipping. Seeds of P. x hortorum are best sown indoors, 12-16 weeks before last frost, at a temperature of 70-75°. Expect germination in 5-15 days. Seeds of the scented geraniums are best sown indoors, 12 weeks before last frost, at alternating temperatures of 68 and 86°. Expect germination in 20-50 days. It is not recommended to sow either of these types outdoors.

Growth: Transplant when there are at least two sets of true leaves. Grow on at 70-75°days/65-70° nights. Plant out in full sun to afternoon shade in a neutral to alkaline, rich, well-drained soil. Feed well, water plentifully, and deadhead constantly. For conservatory culture: site in full sun, provide 50-55° nights and good air circulation, make sure that the soil is slightly acidic, and allow plants to dry out between waterings. Keep plants pot bound and while plants are in active growth, feed twice monthly. Pelargonium x hortorum may be stored dormant over the winter, however, this practice is not recommended as plants become woody and less productive the following year.

Appearance and Use: Primarily grown as a bedding and container plant (planters, window boxes, hanging baskets), it is also useful as filler in the border and grown indoors in the house or conservatory. Pelargonium x hortorum, Zonal Geranium, is one plant that everyone knows by name. Plants grow 15-24 inches tall and produce 5 inch heads of pink, salmon, red, and white. Leaves are heart shaped from 3-5 inches across and have scalloped margins. They often have a darker green zone in the center of them, thus the common name.


Gardeners' Quotes

"What’s it to you whether or not we have an orderly, scientifically sound method for cataloguing plants and animals? Not much. But it comes in awfully handy for scientists who, up until the middle of the eighteenth century, had to say something like ‘that little yellow flower with the spots on its petals’ every time they wanted to compare notes," The Linnaean System of Taxonomic Classification, Judy Jones and William Wilson, An Incomplete Education