As it is just next door... yes.
Most famous for its tulips but also other bulb flowers is the "Keukenhof" -- try this link: http://www.keukenhof.nl/
The area in between Amsterdam and Lisse is plastered with bulb producing nurseries, but the Keukenhof is surely the most spectacular to visit. Check out their indoor flower shows, too, like for example "·20 April till 25 April Daffodils, Iris, Special Bulbous Plants".

Depending on the amount of time and the means of transport which you'll have during your stay, you might find a way to other Narcissus festivals in the neighbour countries, for example the "Fete des Jonquilles" in Gerardmer / France, on 16th / 17th of April (http://www.societe-des-fetes-gerardmer.org/fete2005.htm).
Another interesting event is the "Genter Floralien" in Belgium (http://www.floralien.be/DE/index.aspx).
Only a short trip over the German border and you can see the beautiful private garden Lucenz-Bender, which is famous for its narcissus collection. (http://lucenz-bender.de/gartenpforte.htm). Sorry, the site is only in German, you can catch an impression with the link "Gartenansichten" > Frühling. They open their garden doors on 30th of April / 1st of May.
Europe is tiny, you can easily reach many places within a few hours of travelling.

The botanic garden in Amsterdam, and the one in Leiden (the Hortus Botanicus, oldest BG in the Netherlands) are much more interesting than Keukenhof, in my opinion. Keukenhof worth a visit, but it's not at the top of my list. It's a grand display of crayola-bright swaths of color, but the train ride to Leiden through the bulb growing region might be a better way to view this kind of brilliant (drive-by) gardening.

Just google "amsterdam gardens" and you'll get an idea of the range of gardens worth visiting. Many of the parks and museums have lovely gardens too. You can't miss in Amsterdam in the spring - though it tends to be cool and wet, so bring your warm clothes.

Thank you Diggin in the Dirt! I really appreciate the info.