Gardeners invited to chart the flowering of magnolia trees
to herald the start of spring
The Royal Horticultural Society (RHS) is asking gardeners to help them chart the onset and progress of spring by recording when Magnolia campbellii trees bloom.
In recent years the opening of magnolia blooms in Cornwall, which locally heralds the arrival of spring, has been as much as a month earlier than the Met Office’s official date for the start of season, which this year is 1 March.
The flowering of the trees, which is considered a more specific indicator than daffodils of when spring has sprung, traditionally occurs first in Cornwall due to the county enjoying the longer days and higher temperatures needed to trigger flowering.
But with urban microclimates and milder winters, the RHS is keen to find out if Magnolia campbellii are flowering early in less traditional areas. This information will help the charity map the progress of spring across the UK and help gardeners to better understand the unique climatic conditions of their area.
Gardeners are invited to take part in the survey by visiting: rhs.org.uk/magnoliasurvey2015