Sub-species
subsp. pedunculata		Portuguese  Lavender
This plant is similar to the species, but produces larger magenta upright bracts at the end of the inflorescence and the flower has a longer pedestal.

Cultivars
'Alba'
This shrub produces white flowers and bracts and forms a more compact habit than the species.

'Avonview'
This vigorous compact plant to 800mm (32in) tall producing long tall purple flowers over a long flowering period. It may be grown in containers or used as a low hedge on well-drained soils in a sunny position and has aromatic foliage.

'Italian Prince'
This shrub has a compact habit and produces dark purple flowers and bracts.

'Lavender Lace'
This shrub forms a compact rounded habit with pale green leaves.

'Merle'
Compact bush with long eared, magenta-purple flower heads.

'Marshwood'
This plant is particularly heavy flowering, long blooming cultivar.

Lavandula  Sub species

L. lusitanica
Narrow leaves, dark purple flowers with paler rabbit eared bracts.

L. sampaiana
Native of Portugal Upright bush with green rather than silver-grey foliage it has large purple flower spikes.

L. peduneulata
This plant has a lower habit that spreads wider.

Weed Potential 
As a weed Bush Lavender is invasive in regions with moderate rainfall infesting habitats including grasslands or open woodlands and disturbed soils. Infestation form dense stands inhibiting the development of native tree or shrub seedlings and prevents ground flora from growing. 

It grows in well drained sandy / stony or heavier clay soils that are moderately fertile in open sunny to partially shaded position. The plants produce numerous seeds with in 2-years that are dispersed by birds, animals or water, wind and in soil. It can also be spread vegetatively when the plant crowns come in contact with moist soil during removal or in garden waste.

Control methods include physically digging out seedlings and small plants checking that all the roots are removed. Fruiting branches should be bagged and removed off site then destroyed. 

Plants or seedlings may be sprayed with a non-selective herbicide during spring while the plant is in flower. Follow up spray will be required to eradicate accumulated seeds in the soil.