100 Fresh Seeds Dame's Rocket Seeds Mixed Colors Dame's Rocket, also known as Sweet Rocket, is a perennial that grows 90 to 100 centimetres in height. In this mix are glamorous flowers that assume a shape of loose clusters at the top of the shoots. Moreover, the flowers produce a beautiful fragrance, which is a very appealing aspect of this lovely variety. Dame's Rocket, which is in flower from May to June, is highly recommended for perennial beds or for a cut flower. Growing: sow the seeds in a seedbed or directly into perennial beds from the spring to the summer. The seeds germinate in 10 to 15 days at 18-20oC. Plant out in 40-60cm spacings. The plants require moist permeable soils in lightly shaded or sunny positions. Ten grams of seeds produce around one thousand plants.