The term “Citroen Plant” often causes confusion, as it does not refer to a single botanical species. Instead, this common descriptor is used for various plants that emit a distinct citrus-like fragrance. This article clarifies which plants are commonly identified this way and provides practical guidance for their cultivation.
Identifying the “Citroen Plant”
The term “Citroen Plant” most commonly refers to Citronella Grass (Cymbopogon nardus) or Citronella Geranium (Pelargonium citrosum). Citronella Grass is a clumping, perennial grass native to tropical regions, known for its long, slender blades, and its strong lemony scent comes from citronellal and geraniol compounds. Citronella Geranium, sometimes called mosquito plant, is an herbaceous perennial with lobed, hairy leaves that release a similar citrusy aroma when bruised. This hybrid’s citrus-like scent is also due to volatile compounds, including citronellol. Neither plant produces edible citrus fruits, as they are distinct from true citrus trees.
Common Uses and Benefits
The primary appeal of “Citroen Plants” lies in their aromatic properties, particularly their association with insect deterrence. Their citrusy scent is recognized for its ability to help repel certain insects, notably mosquitoes. They are a popular choice for outdoor living areas, where their fragrance contributes to a more comfortable environment. While the plants themselves emit a scent, their effectiveness as insect repellents is often enhanced when their leaves are crushed or when extracts are used in commercial products.
Beyond pest management, these plants offer ornamental value. Citronella Grass, with its upright, grassy habit, adds a textural element to garden beds or containers. Citronella Geranium produces small, often inconspicuous flowers, but its foliage is attractive and bushy. Their pleasant aroma also contributes to their use in potpourri or as a natural air freshener. While they help deter insects, they are not a complete substitute for commercial insect repellents, which are formulated for more comprehensive protection.
Growing and Care
Cultivating “Citroen Plants” requires understanding their environmental preferences for vigorous growth. Both Citronella Grass and Citronella Geranium thrive in locations that receive ample sunlight, ideally six hours of direct sun daily. While Citronella Geranium can tolerate some partial shade, full sun promotes the strongest scent production. These plants prefer well-draining soil that is moderately fertile and do not tolerate soggy conditions.
Consistent watering is beneficial, especially during dry periods, but overwatering leads to root issues. Allow the soil to dry slightly between waterings to prevent saturation. Both plants are sensitive to cold temperatures and are typically grown as annuals in frosty regions unless brought indoors. Citronella Grass is generally hardy in USDA zones 10-12, while Citronella Geranium is more suited to zones 9-11.
During the active growing season, a balanced liquid fertilizer can be applied every few weeks at half strength for healthy foliage development. Pruning benefits both species: removing spent blades for Citronella Grass maintains appearance, while pinching Citronella Geranium tips encourages bushier, more fragrant foliage. Regularly inspect plants for common pests like spider mites or aphids for early intervention; these plants are generally robust.
Safety and Precautions
While “Citroen Plants” are valued for their aroma and repellent qualities, be aware of certain safety considerations. Neither Citronella Grass nor Citronella Geranium is intended for human consumption, and ingestion should be avoided. Their distinct scent compounds can cause mild gastrointestinal upset if consumed by humans or pets.
Direct contact with the sap or leaves, for sensitive individuals, may lead to minor skin irritation or dermatitis. It is advisable to wear gloves when handling, especially during pruning. To prevent accidental ingestion, keep these plants out of reach of young children and pets.