After flowers are faded the plant can be cut above ground level and it will grow back. Flowers will open in fall.1
Try to plant in a location that enjoys full sun and remember to water moderately. Keep in mind when planting that Black Watchman is thought of as very hardy, so this plant will survive though longer winters with little or no damage. Ensure your soil is clay, sandy and loamy and has a ph of between 6.1 and 7.8 as Hollyhock is a weakly acidic soil to weakly alkaline soil loving plant.By our calculations, you should look at sowing Black Watchman about 56 days before your last frost date.
Hollyhock ‘The Watchman’, Sereno