Better not to prune
Plant in a location that enjoys partial sun and remember to water moderately. Keep in mind when planting that Elmshorn is thought of as hardy, so this plant will survive close to or on freezing temperatures. Planting Elmshorn in loamy soil with a ph of between 4.5 and 8.0 is ideal for as it does best in moderately acidic soil to weakly alkaline soil.By our calculations, you should look at sowing Elmshorn about 35 days before your last frost date.