My partner and I have an allotment and have tried growing lots of products. Some, however, have not been successful. Prior to getting this book, we used to just forget about them and try another product. However, after a while, we had forgotten which products were successful and which were not. This book has given us a useful place to write down such information that we can keep at the allotment. In theory, we shouldn't forget which veg to avoid from now on!! Really useful little book!!!