Lavender - French Lavandula dentata

The one growing account read is the RHS's, written for the United Kingdom. It gives full sun in a sheltered spot, a well-drained chalk, loam or sand, acid, neutral or alkaline, and two to five years to reach full size. Its hardiness rating is H3, which on the RHS scale is minus 5 to 1 degrees Celsius and means hardy in coastal and relatively mild parts of the United Kingdom. That is a British rating, not an Australian one, and no Australian frost figure or climate zone was read for this species.

No reference read gives French lavender a drought rating, a watering note, a pruning note or a pest list of its own. Of the genus, the North Carolina toolbox, an American reference, says lavenders want very well-drained soil and are susceptible to leaf spot and root rot if the soil is too wet. The page for Avonview sets out what the references say of lavender in general.

No reference read lists garden uses for Lavandula dentata by name. The RHS files it among its recommended shrubs and under conservatory and greenhouse, which is a British placing. Of the genus, the North Carolina toolbox says lavender is a good nectar plant for bees and butterflies and can be grown in containers. The HortOS guides to community garden plants on a budget and school garden planting and buying list French lavender in their plant tables.

No reference read gives a hedge spacing. For width, the RHS gives it 1 to 1.5 m. La Diva Big Night is a lavender sold under a series name, with its own page.

The table above shows the sizes growers list, and the trade prices by size are on the price page; the HortOS guide to nursery pot sizes explains the sizes. Read the botanical name on a list. The Atlas of Living Australia and the Weeds Australia profile both give French lavender as a name of Lavandula stoechas as well, the Italian lavender that is a declared noxious weed in Victoria, and Lavandula dentata is a different species.

The Weeds Australia profile names French lavender among the less commonly naturalised lavenders that are garden escapes in Australia, and the Australian Plant Census records it as naturalised in Western Australia and South Australia and doubtfully naturalised in Victoria and on Norfolk Island. The Atlas holds records of it in South Australia, Victoria, New South Wales, Western Australia, Tasmania and Queensland. Stock crossing a state border moves under the state and territory biosecurity rules.