How to Grow a Mosquito Plant

The mosquito plant, also known as the citronella plant, is a cultivar of geranium that can be grown as an annual or perennial. It is believed to repel mosquitoes because the leaves contain oils similar to those of citronella grass, which is used in commercial mosquito repellants. Mosquito plants can grow up to three feet in height and bloom in the spring and summer. The flowers produce a pleasing aroma and can be pink or violet in color. Mosquito plants can be easily grown in most climates, but require special winter care to be grown as a perennial.

Things You'll Need

• Mosquito plant
• Organic compost
• Garden tiller
• 10-10-10 Fertilizer
• Planter

Instructions

1. Plant mosquito plants in a location that receives full sun or partial afternoon shade in very hot climates. Spread one inch of organic compost over the planting site and use a garden tiller to incorporate it into the soil to increase fertility and drainage.

2. Dig a hole twice as wide as the root ball and of equal depth. Remove the mosquito plant from the container, place it in the hole and cover the roots with soil. Water thoroughly to collapse air pockets in the soil and bring moisture into contact with the roots. Space plants 12 to 15 inches apart.

3. Water mosquito plants once per week to prevent root rot. The soil should be allowed to dry slightly between watering. Reduce watering to once every two weeks during winter when the mosquito plant goes dormant.

4. Feed mosquito plants once every two months using a balanced 10-10-10 NPK fertilizer. Soak the soil surrounding the plant both before and after application to prevent root burn. Follow the instructions provided by the manufacturer for proper dosage.

5. Dig up the mosquito plant just before the first frost of winter when nightly temperatures reach about 40 degrees Fahrenheit. Transfer the mosquito plant into a planter large enough to fully hold the root system. Cover the roots with soil gathered from the previous growing site.

6. Keep the mosquito plant at a constant indoor temperature between 50 and 70 degrees Fahrenheit during winter. Fertilize the plant only if it begins to turn light green in color. Move the mosquito plant back outdoors in early spring following the final frost of winter.

Tips & Warnings

• Mosquito plants can be grown indoors year round if desired. They can also be grown as a permanent outdoor plant in warmer climates with mild winters.

• Do not splash any water onto the foliage while watering, as moist leaves are susceptible to disease and fungal infestations.

References

• Colorado State University: Scented Geraniums
• North Carolina State University Department of Horticultural Science: Geranium Culture for Home Gardeners
• University of Wisconsin Department of Horticulture: Herb of the Year 2006: Scented Geraniums