Step 1 - Be careful of the slight prickly areas on the leaves of the starts. Unpack your plant(s) immediately removing any packing material. Cut away any yellow or brown leaves or broken stems that may have occurred. 
Step 2 - Water the plant(s) thoroughly letting the excess water drain through the bottom of the pot(s). Repeat once a week all summer. Be sure to keep excess water out of any saucer underneath pot.
Step 3- These plants are trailing by nature and require a pedestal under their container or need to be planted in a hanging basket. Repot the plants into larger 6inch pots separately or together in one 8-10 inch container. Water again.
Step 4 -Place plants outside during summer in full or partial sun when evening temperatures stay above 55 F degrees.
Step 5 - – They will bloom beginning with the second season from spring –summer. Once they start they do so for decades on end.