Aloysia comprises shrubs that may be either deciduous or evergreen, characterized by their aromatic leaves, which can be simple and arranged in pairs or whorls. The plants produce small flowers that are grouped in spike-like clusters.

Aloysia

Aloysia chamaedryfolia is a deciduous shrub that can reach heights of up to 2 meters. It features aromatic, broadly oval leaves with deep serrations, measuring as long as 3 centimeters. From late summer through autumn, slender spikes emerge, showcasing numerous small, fragrant flowers that range in color from pale purple to white.

Aloysia chamaedryfolia

Aloysia citrodora is a deciduous sub-shrub that can grow up to 2.5 meters tall. It features elongated, lanceolate leaves that emit a strong lemon fragrance. The plant produces clusters of small white or pale lilac flowers in open panicles.

Aloysia citrodora

Aloysia citrodora 'Goliath'

Aloysia citrodora 'Spilsbury Mint'

Aloysia gratissima

Aloysia polystachya

Aloysia virgata is a deciduous shrub that can remain evergreen in warmer regions where frost is absent. It features paired green leaves and produces elongated spikes of white flowers from summer through autumn. The blooms appear at the tips of the branches and emit a strong, sweet scent.