I wish that I could provide more accurate information for you, but it was our understanding that the tulip observations for guests only last 4-6 weeks. The Hollanders stagger their growing of tulips primary in 3 overlapping planting times to compensate for potential bad weather conditions impacting tulip growth, plus this practice extends the season. But in sharing this, I suggest that you would be wise to check with sources other than me. My wife and I were fortunate to hit the tulips at peak time in 2019 which was the last week of April.

This particular tour can accommodate, with some restrictions/limitations. Wheelchairs have access to the grounds, but there are opportunities to go inside windmills and other working farm areas that would not be conducive to wheelchairs. Net out, I would say that an individual visiting what is offered on this tour can have a wonderful experience despite the few restrictions.

The amount of time needed at Keukenhoff Gardens depends on the interests of the visitor. However in general, I would say that one must minimally plan 3 1/2 hours, but 4 hours or more is suggested. As for touring the grounds, I strongly recommend scheduling your tour far in advance of your trip which can be explored online. There are many different option types to select from. If online is not your thing, you could call direct to get information or work directly with your favorite travel agent.

The tulips will not be blooming in late June, but you can go online and search for tours of windmills and pancake lunch, where you will find there are several different types of tours available that are packaged/coupled with varied tourist destinations based on the time of year of your visit.