Although this might be a fixed date for some people, many others are making a seasonal change right now... or thinking about it.

I’m in the “thinking about it” camp but it seems like a great excuse to theme some of the current housework and projects.

If you don’t know about it already, let me introduce the concept of Koromogae

https://jpf.org.au/senseis-voices/koromogae/

We live in a small flat in London but MrLapLap maintains a storage space. We have kept our visits there to an absolute minimum since March, but we’re looking at packing up some of our warmer winter clothes. Koromogae seems like a good way to mark the temperatures reaching 20C/68F on a consistent basis - which I think is Tokyo round about now and London very soon.

The Mizuna I mentioned planting from seed is grown enough to start eating. Has been left untroubled by the Snails and slugs that proliferate round here, and the greenfly seem uninterested in it (greenfly are more attracted to young radish leaves). The shiso (AKA Aojiso or green perilla) has been growing much more slowly. Storing the seeds in the freezer for a night before planting may have helped with the germination. Will have to keep guarding the shiso from pests for a bit longer. Once they are bigger they can fend for themselves well, but I’d forgotten how long it takes before they reach that point.
We have no soil in our back garden, this is happening in a few plant pots. The Mizuna reaching maturity really has signalled a change - even if it’s just a vivid green representation of how long all this has been going on for!