Keep in mind when planting that Rocky Mountain Deep Rose '09 is thought of as half hardy, so it will require protection in frosts and low temperatures. Try to keep the ph of your soil between the range of 6.0 and 6.5 as Rocky Mountain Deep Rose '09 likes to be in weakly acidic soil.
By our calculations, you should look at sowing Rocky Mountain Deep Rose '09 about 105 days before your last frost date.
Ensure that temperatures are mild and all chance of frost has passed before planting out, as Rocky Mountain Deep Rose '09 is a half hardy plant.