They will fill in with time and care. Keep the soil moist but not soggy wet. Apply a cup of a fertilizer similar in blend to 15-5-10 per 50 square feet of soil surface in March, April, May, June and July. Each time water it in well. If you want bushier growth a light shearing of the plants once or twice from spring to mid summer is fine.
Thanks for the question. Please stop in again soon!
Q&A Library Searching Tips