Keep young plants moist at all times and surrounded with mulch, compost or straw. After harvesting many artichokes you can let the artichokes bloom and after flowering is over cut the plant to the ground and it will come back next spring.
Purple of Romagna is generally regarded as a half hardy plant, so remember to protect this plant from frosts and low temperatures. Purple of Romagna needs a loamy and sandy soil with a ph of 5.6 to 6.6 (weakly acidic soil).By our calculations, you should look at sowing Purple of Romagna about 48 days before your last frost date.
Harvest before the petals of the choke begin to open and is about 4"(inches). At this point cut the head with about 3" of the stem attached.
This variety tends to mature and be ready for harvest in mid autumn.