Cultivars
'Maculata'
This plant has leaves with yellow-green centres.

'Variegata'
This spreading shrub has a slender arching stems that are covered in leaves with creamy white margins. It is commonly grown as a ground cover or used in spillover on embankments, requiring little care once established.

Weed Potential 
As a weed Blue Periwinkle is invasive in seasonally moist shaded positions and grows in coastal woodlands, heathlands or along water courses and drains. The creeper has a fast growth rate forming arching stems up to 1m (3ft) long per season. They root where they touch the ground at the nodes and it creates a dense covering over low growing native vegetation inhibiting tree or shrub seedlings to grow. 

The plant grows in full sun but spreads quickly in very shaded positions requiring a regularly moist well drained soil and when mature it tolerates dry periods. Seed is not commonly produced in Australia and the plant is vegetatively dispersed in garden waste or by storm water and in soil. 

Control methods include physically digging out small infestations checking that all broken fragments or roots are collected. All plant material should be removed off site and destroyed. The plant may also be sprayed with a non-selective herbicide aided with a surfactant to penetrate the waxy leaf surface, from spring to autumn. A follow up spray will be required over the next 2 years.