x Alcalthaea represents hybrids that combine traits from both Alcea and Althaea. These perennials are characterized by their height and branching growth habit. They have hairy leaves and produce upright clusters of flowers in shades of pink, cream, or yellow. Although they are visually appealing, they have a relatively short lifespan.

x Alcalthaea

x Alcalthaea suffrutescens

x Alcalthaea suffrutescens 'Freedom'

This upright, bushy perennial reaches heights of up to 2.5 meters and features lobed, softly hairy, grey-green foliage. From mid-summer through early autumn, it produces elongated spikes adorned with apricot-cream, semi-double flowers reminiscent of hollyhocks.

x Alcalthaea suffrutescens 'Parkallee' (d)

x Alcalthaea suffrutescens 'Parkfrieden' is a robust, deciduous perennial that can grow up to 1.4 meters tall. It features lobed, softly hairy foliage in a grey-green hue. From mid-summer through early autumn, it produces elongated spikes adorned with light pink, single flowers reminiscent of hollyhocks.

x Alcalthaea suffrutescens 'Parkfrieden' (d)

x Alcalthaea suffrutescens 'Parkrondell' is a robust, woody perennial that can reach heights of up to 1.5 meters. Its foliage consists of lobed, softly hairy leaves in a grey-green hue. From mid-summer through early autumn, it showcases elongated spikes adorned with light pink, single flowers reminiscent of hollyhocks. Each flower features a central rosette of crinkled petals surrounding a dark center.

x Alcalthaea suffrutescens 'Parkrondell' (d)

x Alcalthaea suffrutescens 'Parktraum'

x Alcalthaea suffrutescens 'Poetry' is a tall, upright perennial that reaches approximately 1.5 meters in height. Its foliage consists of heart-shaped leaves that are softly hairy, featuring both lobes and toothed edges. From summer through early autumn, this plant showcases spikes of double, cup-shaped flowers, which are a vibrant pink with purple-pink centers.