Kew Gardens in February

I would go for the greenhouses if nothing else, but there is a winter interest garden (at Wakehurst), so I would not rule it out.
https://www.kew.org/wakehurst/whats-at-wakehurst/winter-garden
https://www.kew.org/read-and-watch/kew-winter-things-to-do

I don’t think it is worth the effort in February unless you are looking for things to do. I’ve been to Kew Gardens in the summer and I enjoyed it, although it really couldn’t compare with many other gardens I have been to. I’ve also been to Christmas at Kew and I feel this is when the location is at its most impressive. The light shows and installations are very impressive.

Don't discount Kew Gardens in February - there's still lots to see. The orchid festival runs from 3 February - 3 March and that alone would make the visit worthwhile. Do a google image search! There will also be spring bulbs - snowdrops will be out along with winter aconites and also helibores. There is also a winter garden too.

Oh my, the orchids do look incredible. Thanks for the replies. It’s almost a good news, bad news thing however. Oh boy another really cool thing to see in London! I keep expanding the number of days to be there.

Besides the greenhouses there's also the wonderful Marianne North Gallery, full of her exquisite botanical paintings--she was quite accomplished, travelling all over the world in the Victorian era to paint trees, flowers and more. I had never heard of her and thus it was one of the most delightful surprises when I visited last September. I would suggest Kew Palace but it doesn't open until March 29. You could always continue on to the next Tube stop and poke around Richmond, plenty of pubs and restaurants for a meal before heading back to London.

https://www.kew.org/kew-gardens/whats-in-the-gardens/marianne-north-gallery

Are you a gardener? I visited Kew Gardens for the first time on my fourth trip to London last March on a cold, rainy day. For me, a gardener, it was magnificent and only wished I’d visited before.

Since I was traveling with a friend on her first trip to London, she and I split up for the day so she could hit the biggies. I went to Kew. Even though it was early March, the gardens were alive. Groves of witch hazel in blooms, early bulbs planted in swathes, standing underneath The Hive, meandering the high boardwalk through treetops, buds bursting from Forsythia, red currants and more. When the heavens opened up,I’d escape the rain inside one of the many Victorian and other greenhouses. It was marvelous just wandering the fields, forests and meadows. My most poignant memory is of coming upon a giant field of chionodoxa, Glory of the Snow, planted en masse casting a whole meadow of blue tiny flowers. I remember thinking I would never see a planting like this again. It was breathtaking. I closed the gardens down that day.

Would my travel partner whom loves nature too but isn’t a gardener, appreciate it like I on a cold, rainy March day? Probably not. Will I visit London again without visiting Kew regardless of season? Probably not.

In addition to the greenhouse with the orchids - well worth it for the show, it is magnificent, there is also the Alpine house, the great lily (won't be open at that time of year) and two very large maybe even huge multi-storey greenhouses, the Temperate House and my favourite, the Palm House. Magnificent specimens, all well labeled, if you like that sort of thing.

On a cold bleak February day you could do a lot worse.

thenosbigs, that was a beautiful description of Kew Gardens! Such lovely words for such a lovely place.