In recent years these flowers have begun to appear in gardens and in other places around the area. I can only guess that the seeds have been distributed by birds as Greenford is now miles from any agricultural land. Brassica napus is used to make biodiesel, cooking oil and animal feed.
Images and text ©Albertina McNeill 2012. Please do not reproduce without permission. All rights reserved. Do not add any of these images to Pinterest or similar sites as this will be regarded as a violation of copyright.