Site plantings too close to the house. Photo: ŠJohn Leeke. Not Recommended Losing Connections. This bush--planted right next to the foundation--has blocked air flow along the building, resulting in moisture build-up in the wood trim and siding. As a result, some shingles and trim boards were decayed. The home-owner has done a good job of spot repairs by replacing individual shingles, but must also remove the bush to address the cause of the deterioration.     No plantings near the foundation. Photo: ŠJohn Leeke.   Recommended Re-Connecting. A thick grassy turf grows right up to the foundation, without any larger plants. Note that the ground has a positive slope away from the foundation walls in order to carry rain water into the yard. Plan your work:Trim back bushes yearly to promote free airflow along the building. Trim trees every ten years. Maintenance tip: Keep grass trimmed short right up to the foundation. Plant bushes and flower beds away from the building. When plantings must remain next to the building, keep them trimmed back at least two feet. Trim tree branches so they are at least ten feet from the building.