When the leaves begin to appear, cover them over if a frost is due, and bank them up with earth, when they have grown to about 15cm. Continue to bank up the plants as they grow and then when there is a good mound of earth in place to protect the growing tubers, allow them to mature and flower
Try to plant in a location that enjoys partial sun and remember to water moderately. Keep in mind when planting that Rocket is thought of as tender, so remember to wait until your soil is warm and the night time temperature is well above freezing before moving outside. Planting Rocket in loamy and clay soil with a ph of between 5.0 and 6.0 is ideal for as it does best in moderately acidic soil to weakly acidic soil.Not normally grown from seed, plant instead chitted tubers. To chit, place the tuber in bright light on a cool windowsill, in very early spring. This allows the tuber to begin to sprout and speeds up the growing process when the tuber is planted out
Sow 5.85 inches (15.0 cm) deep with a guideline distance of 11.7 inches (30.0 cm).By our calculations, you should look at sowing Rocket about 14 days before your last frost date.
Choose a sunny spot and either gig a trench or individual holes about 30cm deep. Place the chitted tuber ‘rose’ end up in the hole or trench. The ‘rose’ end is the smooth end that when the tuber was growing was not attached to the parent plant. The other end is more pointed and has a scar where it was attached to its plant.
Cover the tubers and mark the row.
Harvest tubers are the flowers fade
This variety tends to be ready for harvesting by early summer.