Polka Dot is part of the Centaurea genus and is a Cornflower variety. Its scientific name is Centaurea cyanus 'Polka Dot'. Polka Dot is a heirloom (open pollinated) variety. This variety typically blooms in the following colours: Bright Purple and Bright pink and White. The leaves of this particular variety normally show as Lincoln green colour. This variety is an Flower that typically grows as an Annual, which is defined as a plant that matures and completes its lifecycle over the course of a single year. Polka Dot normally grows to a mature height of 90.0 cm (that's 2.93 feet imperial).
Polka Dot Cornflower is great for inexperienced gardeners and those that like low maintainance gardens.
This variety plant info is provided by the myfolia gardener's wiki. All details about Polka Dot have been kindly provided by our members.
By our calculations, you should look at sowing Polka Dot about 7 days after your last frost date.