How far away can trees safely be planted from a house?

Trees are often blamed for subsidence or for roots rampaging through drains and services underground. In our experience most of these problems are caused by shrinkable clay soil types but a tree close by is an easy visible target to take the flack and give instant gratification for the insurance industry.

However, you can box clever on this! Sometimes it is nice to have trees growing close to buildings to soften the hard landscape as well as giving the opportunity for evergreen screening and privacy. There are two ways of achieving this without future ramifications.

How to keep a safe height

The first way is to keep a tree tamed. Tilia euchlora (Aphid Resistant Lime) has the capacity to grow to 60 feet tall by the same across and generally speaking a root system matches the trees canopy to anchor it and provide the water and nutrients to support its crown. You can keep a mature tree such as Tilia euchlora to a mere ten to fifteen foot high by routinely pruning back to the same point every winter, so reducing its need to produce a problematical root system to sustain it. This is sometimes referred to as pollarding. Alternatively, you can pleach or espalier the crown back each year to a one dimensional frame for screening, or formal aesthetics which gives you the same effect. The drawback is that your tamed tree will want to revert back to normal size whenever it gets the opportunity to do so! Tree taming requires routine yearly maintenance every winter.

Another way to plant

The second way to safely plant trees close to houses and buildings is to choose trees with the capacity to grow no more than 20 feet at maturity. You would be best considering a species which is half shrub and half tree such as:

• Photinia Red Robin
• Ligustrum lucidum variegata
• Ligustrum japonicum

These small garden trees are excellent for screening as they are also evergreen. In general the best practice is, the more distance you can allow when planting, the better, to be safe. We recommend pruning these types of trees, to keep them full and dense particularly if you are using for screening.