Why plant trees

Why grow trees? Can you imagine living permanently in a landscape without trees? Try the Sahara or Gobi deserts or Antarctica. Trees are semi-permanent fixtures in our ever changing lives. They may be the oldest living things we encounter. They can charm us as they change from season to season. They can calm us as they cast shade or shadow or rustle. They can scare us and many are the subjects of folklore.

Do they help reduce climate change? An emphatic yes because they stabilise the soils, reducing water run-off and creating an environment where other plants can thrive. Do they soak up carbon dioxide? Yes but only when they are in leaf. It may be the case that deciduous trees use carbon dioxide when in leaf but use up oxygen and maybe release carbon dioxide in the winter as the fallen leaves decay. The beneficial effects of trees however far outweigh any disadvantages. They support other wildlife including insects, invertebrates, birds and some mammals.

Can I grow any tree anywhere? No, we can’t grow some trees in Pembrokeshire because the summers aren’t hot enough. So have a look around where you live to see what grows well. Is your soil acid or alkaline? Is it sticky or downright wet? If it is, then the species that will grow well are much reduced. Have you considered growing something in a very large pot to give it what it wants?

Other considerations include the eventual height and spread of trees and any nuisance values. For example there are species and cultivars that are suitable for a small garden and others that are best left for the park or stately home. Some have roots that will disturb drains and foundations. Some have pollen that is toxic to bees or leaves that are toxic to humans or livestock if eaten.