Beginner Gardening: Plants not growing in area where Cedar Tree Removed, 0 by NorthBay

NorthBay wrote:
About 4-5 years ago we had a large cedar tree removed from our yard. About 1.5 years later, a professional company planted blueberries, chinese fringe flower, daylilies, manzanitas, blue fescue mounding grass in the same area with wood mulch. After 3 years these plants are alive but they have hardly grown in size despite being watered on a drip system and nearly full sun. Could it be that the cedar sawdust and chips left behind have made the soil inhospitable to growth?