As
L. dalmatica are regarded as a
noxious weed, determining solutions to manage and control the growth is essential. Due the high adaptability of
L. dalmatica, they are able to outcompete plants and thus remain present and utilize all the resources required for growth. It is critical to remove these plants at their most vulnerable stage which is when it is at its seed stage. Hence methods to remove
L. dalmatica are essential to prevent seed formation preceding flowering.
Chemical control The use of
herbicides are effective to remove weeds, however, when used on
L. dalmatica results of this chemical control vary. Herbicide control of
L. dalmatica seems to be short-term as the leaves waxy surface help prevent herbicide uptake and its potency. Furthermore, its extensive
root system aids in reproduction when herbicides manage to remove the flowering plant. It is recommended herbicide use is the most effective pre-bloom or in the death stages of
L. dalmatica. Herbicide use as these stages can promote long-term control and have a greater impact on the removal of these plants as energy storage in the roots are at its least.
Mechanical control Removing
L. dalmatica by digging up the roots by hand and with a shovel is effective but requires many years to suppress and remove all
L. dalmatica plants.
Biological control The release of insects feeding on the leaves and stems of
L. dalmatica is an additional way to control the rapid
reproduction of this plant and localize it to a certain area. The most prominent insect that aids in the suppression of
L. dalmatica growth is the toadflax stem-mining weevil. The toadflax stem weevil has been vital in the disruption of nutrient and water transport as
larvae laid by the toadflax stem weevil feed on the stem while the developed adults feed on the leaves. The disruption of the resources used for growth inhibits the bloom of some flowers and therefore reduces the production of seeds. Additionally, shoot growth is inhibited as they
wither before they reach growth due to insufficient nutrients and water. Additional insects that feed on the
L. dalmatica and used as a biological control are the
Brachypterolus pulicarius, Gymnaetron antirrhini and Rhinusa neta and
Mecinus janthinus.
Cultural control The use of cultural control alone is not effective but in combination with other controls such as chemical promote greater success in controlling
L. dalmatica. The methods of burning and tilling may be effective alongside the spraying of herbicides. The addition of other competitive plants to compete with
L. dalmatica can also promote the removal of this noxious weed. It is important to note that control through cultivation must be persistent and engaged in for at least two years to improve effectiveness of removal. == Toxicity ==