You published a few pics in the plantdatabase. As these are the bulbs you are trying to grow in Bilzen I can understand your disappointment, they are (apart from the Iris) not fit for our climate. So go on May 1 to Domein Bokrijk for the yearly (fantastic!) Radio 2 plant market and buy plants fit for your soil and your region. Check the gardens in your neighbourhood to find out what type of plants will grow well in Bilzen. If you have no clue: ask on any Belgium gardening forum. And believe me, there does not exist any fungus that will stop you from growing many species of the Asparagales in your garden.
Have fun and learn and enjoy!
Ruud
By the way: are the castle gardens of Alden-Biesen worth visiting from a plant point of view or are they too French (lot of symmetry, few species)? I have been there only for the Orchillim twice but thats too early in the season.
