I’ve had a few queries asking what to do if there are not four radish plants flowering at the same time.

It does seem that under normal garden conditions there is quite a lot of variation in when the radishes flower, even from plants that were sown at the same time. For example one plant might be much further ahead of the others.

These problems did not happen last year when we first used the plants under more controlled conditions, so many thanks to those of you that have raised the questions. An important aspect of this year’s radish experiment is to assess how they behave in a large number of domestic growing spaces so knowing what is happening out there is really important.

The laboratory group has discussed the problem and I have provided an advice sheet (2 pages) if you are having issues with getting enough flowering radishes. This sheet can be downloaded here, and tells you how to modify your experiment to work around uncooperative radishes!