A geranium plant is a very popular outdoor plant, but also makes a great indoor flowering plant. Geraniums are part of the genus Pelargonium which means “stork” in Latin. Native wildflowers and herbaceous perennials are the real members of the Geranium genus. There are over 200 Pelargonium species, most of them originating in South Africa. A Geranium plant produces clusters of flowers that come in a variety of colors such as white, pink, salmon, red, fuchsia, and lavender. Leaves are green, green and white, or multicolored. Geranium plants can be a compact upright plant or a graceful hanging vine. The vibrantly colored geranium flowers do not have an appealing aroma, but there are several geranium varieties that produce leaves with lovely scents such as rose, lime, peppermint, lemon, orange, or lime. These plants are considered slightly poisonous and should be kept away from pets and children. Read more about common houseplants that are poisonous in Don’t Feed Me To Your Cat! A Guide to Poisonous Houseplants. Geranium plants are a great addition to your houseplant plant collection, but very need very bright light or direct sun for at least 6-8 hours a day to bloom indoors.
There is a new plant called a Mosquito Geranium that has genes coded for citronella, which repels mosquitoes. The citronella smell of this geranium plant is released when the leaves are rubbed or crushed. Research is still being conducted to prove whether this particular geranium plant is really a mosquito repellant.
Spots on the leaves, dropping leaves, and soggy stems sounds like Bacterial Leaf Spot Disease. It is caused by warm humid air and poor air circulation around plants. Treat Bacterial Leaf Spot Disease by immediately removing any geranium plant leaves that have signs of the disease, keep the plant leaves and stems dry at all times, and place the geranium near a small fan to increase air circulation. If the Bacterial Leaf Spot Disease persists, try a copper Fungicide.
Geranium plants do not bloom indoors if they are not getting very bright light 6-8 hours a day. Move your plant to brighter light and see what happens.
Botrtis, a fungus infection caused by water getting on the geranium flowers, causes the center of the flowers to dry out. Botritis comes from poor air circulation, getting the flowers wet, or just over-watering a geranium.