In August 2026, when the dacha season is in full swing, many private homeowners are thinking about landscaping. Bright flowers and lush shrubs create a cozy atmosphere, but not all plants are safe for close proximity to residential buildings. Experts warn: some popular decorative crops, such as lilac and juniper, hide serious risks — from destroying the foundation to high fire hazards.
Lilac: An Aggressor Underground
Lilac is an absolute classic of gardens, known for its incredible aroma and lush spring blooms. However, landscape design specialists strongly recommend not planting this bush closer than 3–5 meters from the house. The main problem lies not in the branches, but underground. Lilac has a powerful and aggressive root system that, in search of moisture, can penetrate micro-cracks in the foundation. Over time, this leads to the gradual destruction of the building's load-bearing structures.
Furthermore, lilac roots pose a threat to underground utilities, particularly sewage and water pipes. Additional complexity is created by abundant root suckers, which quickly fill the space and can lift paving slabs, disrupting the integrity of walkways.
Juniper: A "Powder Keg" and Poison
Coniferous plants are often chosen for landscaping due to their year-round decorative appeal. However, planting juniper, especially creeping varieties, right next to house walls is extremely dangerous for two reasons. First, the needles and branches of this plant contain a large amount of essential oils and resins. In a dry summer, the bush turns into a real "powder keg," capable of igniting instantly from the slightest spark and setting the building on fire.
Secondly, some popular species, such as the Caucasian juniper, are extremely poisonous. All parts of this plant contain toxins, creating a lethal danger for children and pets walking in the yard.
Snowberry and Dogrose: Hidden Threats
Snowberry attracts gardeners with its white or pink berries, which stay on the branches even in winter. However, these beautiful "balls" are poisonous. If the bush grows near the house entrance or on the terrace, there is an increased risk that children or pets will swallow the berries, leading to serious poisoning and irritation of the mucous membranes.
A similar situation applies to dogrose and aggressive varieties of park roses. Their place is in the backyard or near the fence, but definitely not under the windows. Dense thorny thickets create a hazardous zone on the path, and dense foliage right next to the house disrupts air circulation. This contributes to the accumulation of dampness and the development of mold on the building facade.
Contradictory Data
The question of lilac safety has different points of view in the gardening community. On one hand, as noted by experts from Styler and Gazeta.ua, the lilac root system is indeed aggressive and can damage utilities. On the other hand, many landscape designers claim that with proper care and regular pruning of suckers, lilac can be successfully grown near buildings without damaging the foundation. Disagreements also concern juniper: some sources call it fire-hazardous only under conditions of extreme drought, while others recommend avoiding planting it near wooden structures altogether.
