Flower still life with a watch is a 1663 floral painting by Willem van Aelst.

It is in the collection of the Mauritshuis and exhibited at the Gallery Prince Willem V.[1] This work was painted in Amsterdam where it was signed and dated Guill.mo van Aelst.

Van Aelst had recently returned from Italy and thus signed as "Guillelmo" rather than Willem.

The bouquet shows Rosa gallica, poppy, Pieris, Myosotis, Gentiana, Viburnum opulus, Tagetes lucida, Tagetes patula, butterfly, Southern Hawker, and Calliphoridae.

This is one of many recurring symbols of the Vanitas genre that Van Aelst and others used: The painting is one of many from the Dutch Royal collection at Het Loo Palace, Apeldoorn.