Try to plant in a location that enjoys partial sun and remember to water moderately. Keep in mind when planting that Ena Harkness is thought of as hardy, so this plant will survive close to or on freezing temperatures. Planting Ena Harkness in loamy soil with a ph of between 5.5 and 6.5 is ideal for as it does best in weakly acidic soil.
Growing Ena Harkness from seed
As a hybrid variety, this plant will not reliably grow true to type from seed.
Transplanting Ena Harkness
As Ena Harkness is hardy, ensure temperatures are mild enough to plant out - wait until after your last frost date to be on the safe side.