This is a hand operation. One needs a large plastic rake, the type that is large tined and tied together. Lacking this rake, a strawberry rake is best. Either rake will not pull up the vinca which is the issue. Leaving the leaves in place is not harmful to the plants. It will provide mulch next year.
Yes
No. Vinca Minor, also known as Lesser Periwinkle, originates in Europe, whereas Vinca Rosea (correctly named Catharanthus roseus), also known as Madagascar Periwinkle is endemic to Madagascar.
Yes, slugs will eat the leaves and exposed roots of the Vinca plant.
Vinca minor 'Alba'
15cm should be fine
Periwinkle, also known as Vinca major and Vinca minor, will survive snow in climates as cold as USDA zone 6.
Vinca alkaloids were discovered in 1950 by Canadian Scientists Charles Beer and Robert Nobel. They are extracted from the leaves of the subtropical plant Catharanthus Roseus.
Cerithiopsis vinca was created in 1953.
No. Vinca (aka periwinkle) is toxic.
Binomial name: Littorina littoreaFor the source and more detailed information concerning your request, click on the related links section (Wikipedia) indicated directly below this answer section.
Vinca Wiedemann was born on September 23, 1959, in Denmark.
a flower