My first magazine cover*....
....Is a shot of a honeysuckle, Lonicera periclymenum 'Serotina'. Credit only to Alamy and not myself but that's to be expected nowadays. Here's the original.
I was on the look out for it since the sale notification dropped in on Good Friday and found it today while shopping. Very satisfying - and slightly ironic as the first magazine that ever published any of my writing was also Amateur Gardening, back in 1984. The image has been cropped and horizontally flipped to meet the needs of the designer but that's the purpose of stock photography. So thank you Amateur Gardening for publishing my image on your cover and thanks for the very reasonable payment. I hope I'll provide more images for your covers.
Technical details: Shot in 2010 using my Canon 400D and the 55-250mm IS telephoto at 116 mm. f10 @ 1/250sec, ISO 200. Proving that, although you need a decent camera for sales, you don't need the very latest and best kit to deliver high enough quality for the front cover of a magazine.
*that I know of. It can be difficult to find where sold work has been used.